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I am a researcher in the field of aircraft emission inventories at Concordia university. Right now, I am looking at the variability that can occur in the emissions produced during takeoff and landing operations at airports. I am hoping to hear from those who actually do the flying - According to the EPA and ICAO standards, the portions of the LTO cycle are divided as follows with power rating and time in mode: takeoff 100% 0.7 minutes climbout 85% 2.2 minutes approach 30% 4.0 minutes taxi/idle/queue highly variable, depends on airports, standard assumed to be 26 minutes These estimates for time in mode were derived from industry averages, and are for large, turbojet or turbofan aircraft, not turboprop or piston. They have their own times in mode estimates. What I am curious to know is how much variability there can be in the amount of time in takeoff and climbout, and to a lesser degree, the approach phases. For example - what is the difference in the amount of time at 100% power for a fully loaded 747-400, lumbering down the runway, and a 747 only 40% full with passengers? How much variability can there be? I have conducted my own unofficial survey - all 747-400's need to be at 165 mph to lift up the front wheel (they now show ground speed on the monitors on the trans-Atlantic flights) but it seemed that when I was on a flight only about 35% loaded that we lifted off about half way down the runway. How great a range can there be in the amount of time in mode? Do airlines make changes in the amount of fuel that they put on knowing the approximate passenger consist? How great a difference does this make in takeoff weight? I would greatly appreciate any and all information. Please forward all replies to my email patj@alcor.concordia.ca Thanks, JudithReturn to Top
Michael Jones wrote: > > It is not so much that they are mistaken....etc. I ask: What are your qualifications, Mike, that we should listen to you?Return to Top
On 18 Nov 1996 23:13:55 GMT, mbk@caffeine.engr.utk.edu (Matt Kennel) wrote: > Envy and economic inequality breeds resentment, but only evil tribal hate > breeds genocide. > What tribes were involved in the French Revolution, when the Place de la Concord ran red with blood. Worker tribe and Aristocrat tribe? Not the usual definition of "tribe.: Once the devil is out of the bottle -- the cork popped by perceived oppression -- there is no limit to the killing. The tribal identification, if there is one, makes it easier to stir up the mob and easier to identify the economic enemy. Tribes live together peacefully for centuries as long as the smaller one does not oppress the larger. The smaller has the guns. The larger has the numbers. Why are we discussing this? Because it pertains to any modern nation that has a majority, even if only in a local area, which perceives itself oppressed. Watch Southern California during the 21 century. --------------------------------------- Mason A Clark masonc@ix.netcom.com www.geocities.com/CapitolHill/3210 or: www.netcom.com/~masonc (maybe) Political-Economics, Comets, Weather The Healing Wisdom of Dr. P.P.Quimby ---------------------------------Return to Top
In article <178437FBCS86.C369801@mizzou1.missouri.edu>, C369801@mizzou1.missouri.edu (Walker on Earth) writes: >>Soft-drink consumption goes up in summer >>Malaria instances go up in summer >>Therefore, soft drinks cause malaria > >Did you believe cigarette smoking was linked to several varieties >of cancer before 1996? I know I did. Yet, according to you, I >would have been in error, since all that was proven was a statist- >ical correlation. > >Well? Did you, or did you not believe that cigarettes caused >cancer before, say, January of this year? Uhh.. there is more than just statistical correlation to show that cigarrettes cause cancer, or are at least very bad for you. Common sense will tell you that inhaling thick tar-filled smoke is bad for you. Also, in this case, there are few other possible explanations for the high statistical correlation between smokers and cancer. If all smokers also worked around toxic chemicals all the time, then there *would* be another explanation. Yes, I've believed that smoking is bad for you and causes cancer all my life. >>I'm not a climatologist, but judging from the unwarranted hostility in your >>response I would guess that he probably hit on something that's weak in >>your position or that you don't know enough to refute. >> >>Has it ever happened before? You have to prove that burning fossil fuels >>caused it *this time*. Wierd weather has happened before. A whole ice-age >>happened before the industrial revolution. Unless you think the ice-age >>was caused by pollution from the little grey aliens in flying saucers, you >>have to concede that weather can be unpredictable and can change quite a bit >>naturally. > >Ummm . . . ice ages are not unpredictable changes in the weather. Perhaps something as large as an ice age would be predictable. However, that doesn't change the fact that weather is often unpredictable. >You seem to argue like an apologist for the tobacco industry, so >please prove me wrong and list _specifically_ what would have to >be proven before you would concede global warming as a by-product >of industrial emissions is a reality. Simply saying that you 1) Prove that global temperature increase and/or increase in atmospheric storm energy *is* occuring. 2) Prove that there is a causal relationship between increased CO2 concentrations in the atmosphere and increased temperature or storm activity. 3) Prove that this is indeed a crisis, or at least a major problem. A relatively small increase in storm activity or temperature is likely to have little effect, as this occurs naturally all the time. In other words.. what is the magnitude that these gases are likely to change the Earth's climate and how does this impact our civilization. Do the negative effects of CO2 warrant the energy required to phase out fossil fuels? >'have to prove that burning fossil fuels caused it *this time*' >is unacceptable for a variety of reasons, not the least is that >I suspect that the only test of such that would convince you would >be to have all such emissions cease for x number of years . . . >obviously an extremely difficult experiment to carry out in >practice. >I find it interesting as well that you refuse to concede that the >theory has made any accurate, testable predictions, which of >course it has, and unless I am greatly mistaken, the utility >of any theory rests in the power of its predictions. Are there any other equally plausible explanations? This is not the same as smoking, in which case there are no other equally plausable explanations for the statistical correlation.Return to Top
William RoyeaReturn to Topwrites: >Mike Asher wrote: >> The "indirect costs" of nuclear is a concept I refute-- if you believe so >> passionately in it, support your claim. > Decomissioning costs - at least 150 million a pop. Multiply by 109 > reactors, and you've got over 15 billion dollars that is generally > not figured into direct costs. In fact, the NRC has even proposed > that the cost be federally subsidized. Why should your government pay for that? Its only a fraction of a cent per kWh generated. In Sweden its added to the cost of nuclear electricity and the money is put into a fund and used only for waste handling, storage and the future decomissioning of the current plants. Besides, isent it very un-american to depend on the state? :-> (Ok, the fund in Sweden is managed by our central bank but we _dont_ get the cost on our tax, we pay when we use the electricity. ) > Now why don't you produce some CONCEIVABLE shread of evidence for > solar being more dangerous than nuclear. It depends on the kind of danger one is afraid of. If we had hundred of thousands of small nuclear reactors and a couple of people died from accidents every week people would get used to it and nobody would complain much. You would get your very own electricity from it and it would not be different from driving to work or climbing on the roof to adjust the rooftiles... I am afraid I am going to get cynical... :-( Regards, -- -- Magnus Redin Lysator Academic Computer Society redin@lysator.liu.se Mail: Magnus Redin, Björnkärrsgatan 11 B 20, 584 36 LINKöPING, SWEDEN Phone: Sweden (0)13 260046 (answering machine) and (0)13 214600
Hi all, I was just confronted with the problem of the occurence of alcohol in ambient air. Is there anybody out there who can help me getting started to measure this compound. I am affraid the encoutered levels will be at the sub-ppm level (even ppb). Full laboratory equipment is available. Thanks in advance, Martin van Noort ------------------------------------------------------------------------------------------------ This message was posted in Sci.Chem, Sci.Chem.Analytical and Sci.Environment. ------------------------------------------------------------------------------------------------- ********************************************************************** * Netherlands Energy Research Foundation ECN M. Van Noort * * Westerduinweg 3 Department: FB-MO * * P.O. Box 1 E-Mail: vannoort@ecn.nl * * 1755 ZG Petten Phone: +31(0)224 564154 * * The Netherlands Fax : +31(0)224 563163 * **********************************************************************Return to Top
Yuri KuchinskyReturn to Topwrote: > Mike Asher (masher@tusc.net) wrote: > : Yuri Kuchinsky wrote: > > : > It is always amusing when Libertarians praise an extremely statist > : > economic system such as the one in South Korea, or of the other "Tigers" > : > that are only recently becoming less statist. > : > > : > What is it, opportunism -- or plain ignorance? > : > > > : Two of those "tigers": Singapore and Hong Kong, are continually rated the > : two most economically free countries in the world. (The US ranks 3rd - > : 6th, depending on the survey). > > That's because they were ruled by the British, my friend, and are tiny > trading and banking enclaves. Not typical of the "tigers". > This is relevant? The point is that their tremendous productivity is due to their economic freedom, and not a statist system, as you implied. You also failed to respond to the North/South Korea case, which is an even better example. -- Mike Asher masher@tusc.net "Farming looks mighty easy when your plow is a pencil and you're a thousand miles from the cornfield." - Eisenhower
On Mon, 18 Nov 96 15:22:26 gmt, tchannon@black.demon.co.uk (Tim Channon) wrote: >> The days of each generation achieving more than the previous one is over. > >My generation has achieved more and we're not dead yet, so how is it possible >for you to be so certain? > >I think that discussing what you mean by achieving would be useful. > >Both of us are using a communication medium which is pretty new. When I grew up >television was rare, few had telephones, just to mention two. >I can remember the difficulty of international telephone calls, or even >national calls over hundreds of miles of overhead lines and through mechanical >exchanges. > >You can easily buy fresh fruit at any time of the year. When I was about 7 I >remember being given an orange - I didn't know what to do with it. > >Something that hasn't changed is wishing for earlier and better times, yet >that's dreaming and forgetting. It's not possible to pick and choose, so you >can't just take the good bits and ignore the horrible bits you'd forgotten. > >There's plenty more on the way, some of which I'm forging and I expect you in >turn to do your bit. > >Wages mean nothing in isolation. > >I think an old saw is apt: You don't know how lucky you are. > > TC. > E-mail: tchannon@black.demon.co.uk or tchannon@cix.compulink.co.uk > > Ah. Nostalgia isn't what it used to be!Return to Top
On Fri, 15 Nov 1996 04:08:58 +0000, abg21@dial.pipex.com (Nick Hunter) wrote: >Don StaplesReturn to Topwrote: > >> Mark James wrote: >> > >> > On environmental grounds alone is burial, cremation or >> > some other method best. Humans make up an awful lot >> > of biomass these days, so the question may be important. > >Much as I like the speed of organochemical reassembly that cremation >offers, I do have some difficulty with the evolution of mercury from the >combustion of dental fillings - as mercury from the vapor state >methylates rapidy on vegetative surfaces onto which it descends. > >This is of special concern where the crematorium is upwind of a major >population as it is in the city of Bath in which I live. > >My crude calculations suggest 2gms/person * 20 cremations/day * 300 >days/year = 12 kg mercury evolved per year. I would be interested to >hear of improvements on this figure, and to know how many crematoria in >the UK or elsewhere are successfully managing to reduce this figure. > >I await the news of the first class action to be taken against a >crematorium owner by residents downwind from a crematorium. In contrast >to most atmospherically dispersed contaminants, it is geochemically >fairly simple to identify a mercury halo around a contaminating chimney, >thus leaving no question as to liability. > >For myself, I would like my body to be consigned in the style of Tibetan >monks. The skull is smashed, and the corpse is thrown out onto high >rocks for birds of prey to enjoy. No doubt a few hours later, the >undigested bits are shat over the landscape, but at least the fillings >stay attached to the teeth. > >It sounds a bit brutal, but I prefer the idea of bits of me whirling >round in the heavens rather than chugging along in some worm burrow. The mercury from fillings will still be released into the environment, albeit at a slower rate. Shouldn't we be pressing for a change in dental fillings themselves, surely it cant be all that good to have mercury in your mouth anyway. Norman
In article <328E6DBD.5951@ilhawaii.net>, Jay HansonReturn to Topwrote: >Entropy can also be thought of as a measure of disorder >in a system: polluted water that requires purification has >higher entropy than the same water unpolluted, and the >entropy of topsoil increases when it erodes or is polluted >by salt from evaporating irrigation water. > >As ores become poorer and deeper, they require more energy >to refine -- it takes more energy because of greater entropy >in the ore system. > ^^^^^^^^^^^ Entropy is a precisely defined concept in Thermodynamics and Statistical Mechanics. There is a technical sense in which Entropy provides a measure of "disorder", a much looser concept. In some simple problems, particularly ones in which no energy exchanges are involved, the connection between entropy and "disorder" is intuitively clear. For example, a mixture of two noninteracting gases has a higher entropy than the separated gases. However, in problems that are only a little bit more complicated, intuitive ideas about "disorder" can be highly misleading. For example: when metallic iron reacts with oxygen to form iron oxide, the entropy of the system (iron + oxygen before, iron oxide afterwards) actually _decreases_. Yes, the pile of rust that your car turns into is more "orderly" than the shiny new car and the pristine, life-giving air that reacted with it. And this spontaneous, entropy-decreasing process does not violate the Second Law of Thermodynamics. This should be obvious to anyone who really understands Thermo. ------ Robert
George Antony Ph 93818 (antonyg@planet.mh.dpi.qld.gov.au) wrote: : yuku@io.org (Yuri Kuchinsky) writes: : >I think it is totally appropriate to point out that ecologists know more : >about Carrying Capacity and its definition than the economists whose : >"economism" often blinds them to the basic realities of biology and : >ecology. : you are continuously making 'contributions' to debates on economic issues : without the slightest gift of background or understanding. How's that, George? Can you provide some details on this? Anxious to hear more... : I would contend that more : economists have a background in natural sciences than natural scientists : in social sciences. And on what would you base your contention? Hint: hot air doesn't count. : >Many of these lightweights that Jay mentions in his post DON'T EVEN ACCEPT : >that Carrying Capacity is relevant in describing and analysing human : >societies and their relationship to the environment. : The main argument of social scientists is that the laws of the physical : and biological worlds cannot be unthinkingly used for human societies. So? Use them _thinkingly_! Have you thought of this one, George? : While it is very difficult to predict the change : in human societies, the only certainty is that they will not stay static. Just curious, how many years of education did it take you to arrive to this wisdom? : Hence, restricting the definition of human carrying capacity to biological : rules and to the socio-economic status quo is fundamentally flawed. You've made a nice straw-man, now get the lighter fuel! It's fun, isn't it? But be careful, George. These games are mostly for the grown-ups, ya know? Ecologically, Yuri. -- ** Yuri Kuchinsky in Toronto ** -- a webpage like any other... http://www.io.org/~yuku -- Most of the evils of life arise from man's being unable to sit still in a room || B. PascalReturn to Top
Will StewartReturn to Topwrites: > Dwight Zerkee wrote: > > > Because gasoline powered autos were the best solution, both in > > terms of the economics of ownership, range (don't forget we were > > more "rural" then), etc. One could not travel long distances in > > steam or electric cars then or now. > > Newer battery technology has increased the range of electric vehicles. > In the recent Tour de Sol from NY to Washington DC, the Solectria > Sunrise travelled 373 miles on a single charge, while driving on mostly > ordinary roads in traffic. Solectria plans to advertise the car as > having a 200 mile range, taking into consideration HVAC and diverse > driving styles. > Hey, if I can drive across Manitoba or North Dakota in January without having to recharge, you might have a sale. > > Until someone makes an electric > > car that can be bought for $20,000, be filled for a trip for $20 > > and travel 400+ on that fill-up, they will not be a significant > > portion of the automotive sales mix. > > Since a large percentage of the commuting population doesn't drive more > that 22 miles to work, long distances are not a requirement in multi-car > households. EVs can be purchased today for less than $20,000 and the > cost of electricity is much less than the cost of gasoline on a mile per > mile basis. > Let's see, it takes about 0.025 gallons (US) for my ol' putt putt to travel one mile. At tax-inflated Canadian gas prices that is about 6 cents (CDN). Ontario Hydro charges about 6 cents a kWh. Therefore, you are telling me that this car of yours can travel on less than 1 kWh per mile. I remain unconvinced. > > Efficiency is more than thermodynamic efficiency. One can build a Carnot engine, however, > > it would be hugely expensive and therefore be economically inefficient. The only objective > > way to evaluate technology of any kind is to determine the entire life cycle cost. On this basis, > > many so-called clean technologies such as the one's you advocate lose to the one's we are using. > > Many factors contribute to the lifecycle 'cost', including pollution, > depletion of resources, and climate disruption. They are difficult to > appraise, however, so the real losers are going to be our descendants. > Cars currently release about 10% or less of the pollution that they did 30 years ago. By contrast, electrical generation releases about 50% of the pollution they did 30 years ago. Modern engines are vastly more efficient than they were thanks to revolutions in engine management, fuel injection, etc. The same "leap" in performance has not occurred in the fossil fired electrical plants (yet). Advocating wholesale movement to electrical cars would actually increase pollution as the only commercial scale generation technology requires burning stuff. > Cheers, > -- > William R. Stewart > http://www.patriot.net/users/wstewart/first.htm > Member American Solar Energy Society > Member Electrical Vehicle Association of America > "The truth will set you free: - J.C. dz
William RoyeaReturn to Topwrote: > > As far as solar being more dangerous than nuclear (your original claim), > your two burn victims at solar one and the great holocaust of people > falling off their roofs > have failed to convince me and a few others. > Convincing you would require a sledgehammer, not facts, I believe. However, you may scoff at only two victims at Solar One, but it was a tiny 10MW site that operated only for a brief period...and managed, during that short lifespan to explode and seriously injure two people. To replace nuclear power, you would need tens of thousands of sites the size of Solar One. Extrapolating its record to that level shows how dangerous solar really is. This is a fact you can ignore, but you can't refute. -- Mike Asher masher@tusc.net "Once politics become a tug-of-war for shares in the income pie, decent government is impossible." - Friedrich A. Hayek
In article <56svdk$eoa@lace.colorado.edu>, Robert ParsonReturn to Topwrote: ... > I disagree with the inference that the Heidelberg Appeal takes > "an approximately opposite position". It would appear that many > of the signatories also disagree, since a significant number > signed _both_ documents, including: > > P. W. Anderson [etc] > > I have only a partial list of Heidelberg signatories, specifically > the first 46 U.S. scientists to put their names on the appeal. > Out of those 46, 20 also signed the "World Scientists' Warning", > a significant overlap. > > Both documents are very vaguely worded and much hinges upon what one > decides to read between the lines. I'm not surprised that Paul Ehrlich, > for example, signed the "Warning" but not the "Heidelberg Appeal", or > that Richard Lindzen signed the latter but not the former. Extremists > on both sides have implied or even stated outright that the signatories > hold views which are nowhere stated in the documents themselves. > > ------ > Robert Definitely a hazard of the petition game. You never know what use will be made of your name. I bet some of the some of the distinguished meteorologists who signed an innocuously-worded Fred Singer petition were overjoyed to find out he had loaded it up with cranks and meteorologists who were actually TV weathermen. Another funny thing was that the "Dear Colleague" letter approvingly invoked the name of "Sir John Houghton, director of the British Met Office and chief editor of the IPCC Report..." to sell the letter to the recipients. The petition was then used by Singer as a weapon in his campaign against Houghton and the IPCC! For what it's worth, none of the three distinguished "names" used to sell the petition actually signed it. Life is funny. Paul Farrar http://www.datasync.com/~farrar
In articleReturn to Top, sara angleman wrote: >Hi, I'm working on a research paper, looking at the scientific (including >the impact on human and environmental health), political, and economic >aspects of stratospheric ozone depletion. If anyone can suggest any >helpful resources (internet sites, references, or information) >I would greatly appreciate it... Probably the most extensive collection of online resources is that provided by the Consortium for International Earth Science Information Network: http://www.ciesin.org/TG/OZ/oz-home.html It includes links to many other documents, including on-line versions of some of the original research papers. A very useful resource for both science and policy (including the text of many legal documents) is the "SOLIS" (Stratospheric Ozone Law Information and Science) page, created and maintained by Gregory Dubois-Felsmann, at: http://www.acd.ucar.edu/gpdf/ozone/index.html The NOAA Aeronomy Lab: http://www.al.noaa.gov/ , has the text of the Executive Summary of the 1994 WMO Scientific Assessment, http://www.al.noaa.gov/WWWHD/pubdocs/WMOUNEP94.html The US Environmental Protection Agency has an ozone page that includes links to both science and policy resources: http://www.epa.gov/docs/ozone/index.html Some of the more interesting scientific web pages include: The Centre for Antarctic Information and Research (ICAIR) in New Zealand: http://icair.iac.org.nz/ozone/index.html The TOMS home page: http://jwocky.gsfc.nasa.gov/ The EASOE home page: http://www.atm.ch.cam.ac.uk/images/easoe/ The UARS Project Definition page: http://daac.gsfc.nasa.gov/CAMPAIGN_DOCS/UARS_project.html The HALOE home page: http://haloedata.larc.nasa.gov/home.html The British Antarctic Survey: http://www.nbs.ac.uk/public/icd/ozone_pub/index.html The Institute for Meteorology at the Free University of Berlin: http://www.met.fu-berlin.de/~strato/ozon/ozon.html The Climate Prediction Center's TOVS Total Ozone Analysis page: http://nic.fb4.noaa.gov:80/products/stratosphere/tovsto/ The USDA UV-B Radiation Monitoring Program Climate Network, http://uvb.nrel.colostate.edu/UVB/uvb_climate_network.html
In article <3290D044.FA3@ix.netcom.com>, mfriesel@ix.netcom.com writes: >Yes again. Our country is divided into two major camps, one of which >is carrying out an undeclared economic war on the other. The budget >slashing and downsizing, the way it has been carried out, is economic >terrorism. Oh, yeah. We can sustain this level of spending forever. Bill Clinton poops 10000 dollar bills, so no cuts are necessary. Of course, we could just raise taxes. We already pay 40%. We should pay more. We should not be allowed to greedily keep 60% of what we earn.Return to Top
redin@lysator.liu.se (Magnus Redin) wrote: > > "John H. Alderman III"Return to Topwrites: > > > Based on Ocean Thermal Energy Conversion ? > > Please describe it and give us a few references. > Whatever happened to that test project that was supposed to be done off of Florida. As any diver will tell you, there is a thermocline in ocean water. Warm less dense water over a layer of colder water. Any engineer can tell you that you can run a Carnot engine off of any temperature gradient. The project was also suppose to improve sea farming as it would bring up nutrients from the bottom to the upper growing zone (sorry, not a marine bio). Although, you can't get much efficiency from a 30F gradient.
Magnus Redin wrote: > > "John H. Alderman III"Return to Topwrites: > > > Based on Ocean Thermal Energy Conversion ? > > Please describe it and give us a few references. The reference is _A Step Farther Out_ by J.E. Pournelle. Ocean depths are (in most areas) at a temperature of about 4 degrees C. This is because that is the densest water can get. (Exactly what temperature depends on the salt content, the gas content, and some other stuff, but it is not usually more than a degree off of 4 C.) Ocean surfaces in tropical and subtropical areas are usually above 20 C. This is a significant temperature difference, and you can run a heat engine off of it. The fact that the temperature difference is relatively small is made up for by the fact that the heat reservoir is huge, being most of the ocean. This is driven by the sun. Potentially a huge amount of energy is available. Coincidentally, this does not interfere with other uses of the oceans. For example, it tends to return bottom sediment to the surface, and so encourages algae and other plant growth, and so fish growth. Also, if you wanted to use the water surface for other things, like for an algae grower/collector (plastic "wading pool" kinds of things a few meters across that keep the algae inside till a harvest ship comes by) the two uses don't interfere with eachother. So, the image to keep in mind is this: If the Indian Ocean were suddenly supplying a large amount of cheap electricity, and if the Indian Ocean were suddenly JAMMED with fish and various ocean plants, do you think the people of India would complain about this? Do you think that the people of India would be interested in becoming a nation of international suppliers of seafood of all types? How about Eastern Africa? Would they like it? There is a small plant running in Hawaii. If I recall, all they use it for is to run a plant to desalinate water for irrigation. This was on one of those science-magazine tv shows, can't recall which. -- Standard disclaimers apply. In an attempt to decrease the junk e-mail advertising I get, I have made use of a junkmail address. To mail me, change junkmail to dan.evens in my return address. Dan Evens
Jeremy Whitlock (cz725@FreeNet.Carleton.CA) wrote: : : David Lloyd-Jones (dlj@inforamp.net) writes: : : > The first civilian nuclear power station was the British Calder Hall, : > opened by the Queen in 1953. : : Just to push this thread further off track :-), the BNFL homepage : describes Calder Hall as "the world's first industrial-scale reactor", : which became operational in 1956. Shippingport started in 1957, which : puts the UK definetly ahead of the U.S., but it seems the Soviets have : both of you beat: Obninsk started in 1954, and indeed, in 1994 Hans Blix : made an IAEA address at Obninsk to mark its 40th anniversary, referring to : it as "the world's first nuclear power reactor". : : The text of this address is at: : : http://www.iaea.or.at/worldatom/inforesource/dgspeeches/dgsp1994n01.htmReturn to TopFrom "Nuclear Reactor Engineering", Glasstone and Sesonke, EBR-I in Idaho produced the first electricity in 1951, although it was not a civilan reactor. It was also the first breeder, had metallic fuel elements, set the stage for EBR-II which set the stage for the Integral Fast Reactor. If only that pesky runt Rickover hadn't gotten in the way ;-> tooie
sdef!Return to Topwrote: > > A group of NEO-NAZIS are trying to form a newsgroup on > Usenet called "rec.music.white-power", so that they can get their > message of hate out to young people using the Internet. > Newsgroups are public discussions on the Internet and their > formation requires enough support from the Internet community. > > EACH AND EVERY ONE OF US HAS ONE VOTE when it comes > to creating a new Usenet group. I hope you will vote NO and > thereby tell these NAZIS we don't want their stuff on the net.. So much for censorship and free speech, eh Andy? Why not give them their newsgroup and then post in it, exposing their fallacious beliefs? -- Mike Asher masher@tusc.net "We should be eternally vigilant against attempts to check the expression of opinions that we loathe." - Oliver Wendel Holmes, Jr.
In article <328FFF5A.3000@ix.netcom.com>, mfriesel@ix.netcom.com wrote: > Brian Liedtke wrote: > > Nice trick, you cut out all the message and said > > "I did? where" > > Well let me repost your message and see if you can find two instances > > of 'Republicans' in your message. > > Brian Liedtke > I reply:: > Man, you even use the same terminology. But it's no trick. Please do > repost the message I was referring to. Terminology? He just pointed out where you used the party's name. Maybe you weren't trying to trick all of us naive people out here, but he is quite right. Here's the passage: > > I reply: > > [snip] I won't pick on you for > > implying that a gun could be Republican, a simple mistake when you're Here's time One: ^^^^^^^^^^ > > worked up. > > He continues: > > > The quy described a group of outlaws, they dont vote, nor > > > probably, do you. > > I reply: > > Actually, I vote all of the time, at every election, and I urge others > > to do the same. You'll notice I didn't mention Republicans in my Here's time Two: ^^^^^^^^^^^ > > message, not once. Think about it. And that makes the first time a political party has been mentioned in this thread that I've seen. Hopefully you've had all sorts of fun. It was interesting - or humorous? - watching you bait and pounce. Going from nothing to even less. No one cares. Reply if you want, I'm not going to be reading it. Hope this wasn't the most fun you've had all week. Cheers, Jeremy -- My real e-mail Address: jeremy-brown@uiowa.edu Do not send Commercial, 'Junk,' email - unless, of course, you are willing to pay for me to read it. Please negotiate beforehand. Thank you for your support.Return to Top
In article <32920B2D.41C6@studi.unizh.ch>, David Christopher ProbstReturn to Topwrote: >Why is it that most of us consider the year 2000 as special? Is it >simply the FIGURE itself which makes us believe that there must be >something particular about it? > >Isn't this highly ridiculous, since we thereby assume that our DECIMAL >SYSTEM is *the* ultimate clue? What about those cultures that do not >count the years in our way, e.g. the Jews and the Muslims? Is there any >evidence to the assumption that OUR (Christian) way of counting, >starting in the (average) year of Christ's birth, should be the >"correct" one, and thus be relevant for the history of our planet? > >And after all, are there any ASTRONOMICAL or ASTROLOGICAL or >ENVIRONMENTAL hints at an approaching catastrophe or revelation - >depending on the outcome? (I exclude social hints, since these would be >too subjective anyway.) > >It's not surprising that we're becoming more and more exciting as we >approach the next millenium. This must have been the case in previous >times as well. I doubt, however, the actual significance of the coming >turn of the century for life on Earth, apart from the fact that we'll >have to get used to starting the annual figures with "20.." instead of >"19..". > >Herewith I don't mean to harm anyone's convictions. On the contrary: I'd >be ready to learn more - and change my mind, if appropriate. > >David C. Probst Do you make a habit of going to parties and insisting on a rationale for it from the guests before they can have some fun? Do you celebrate your birthday? Why? It's just another day on the calendar. -- ********** DAVE HATUNEN (hatunen@netcom.com) ********** * Daly City California * * Between San Francisco and South San Francisco * *******************************************************
Mike and Bill, I can probably get you both mad at meReturn to Top
Subject: Peruvian eco startup project
From: Simon P Smith
Date: Tue, 19 Nov 1996 19:32:24 -0800
Paraiso 2000 A startup project with the intention to transform an area of desert in Peru into a 'paradise'. http://ourworld.compuserve.com/homepages/simon_s/p2000.htm -- Simon and Yolanda Gomez-Cornejo de Smith http://ourworld.compuserve.com/homepages/simon_s/Return to Top
Subject: Re: Chain to the Stars Re: Mars Colony and how.
From: mfriesel@ix.netcom.com
Date: Tue, 19 Nov 1996 11:37:00 -0700
Michael Martin-Smith wrote: > junk. I reply: Bye.Return to Top
Subject: 2000 - so what?
From: David Christopher Probst
Date: Tue, 19 Nov 1996 20:31:57 +0100
Why is it that most of us consider the year 2000 as special? Is it simply the FIGURE itself which makes us believe that there must be something particular about it? Isn't this highly ridiculous, since we thereby assume that our DECIMAL SYSTEM is *the* ultimate clue? What about those cultures that do not count the years in our way, e.g. the Jews and the Muslims? Is there any evidence to the assumption that OUR (Christian) way of counting, starting in the (average) year of Christ's birth, should be the "correct" one, and thus be relevant for the history of our planet? And after all, are there any ASTRONOMICAL or ASTROLOGICAL or ENVIRONMENTAL hints at an approaching catastrophe or revelation - depending on the outcome? (I exclude social hints, since these would be too subjective anyway.) It's not surprising that we're becoming more and more exciting as we approach the next millenium. This must have been the case in previous times as well. I doubt, however, the actual significance of the coming turn of the century for life on Earth, apart from the fact that we'll have to get used to starting the annual figures with "20.." instead of "19..". Herewith I don't mean to harm anyone's convictions. On the contrary: I'd be ready to learn more - and change my mind, if appropriate. David C. ProbstReturn to Top
Subject: Re: Nuclear Safety disinformation (was Re: Dangerous Solar)
From: redin@lysator.liu.se (Magnus Redin)
Date: 19 Nov 1996 12:36:30 GMT
George_Thomas@mindspring.com (George Thomas) writes: > In some respects I agree with this Matt. However, there was a > signifcant amount of research done during the 1960's for the use of > nuclear power as a propellant for use in aircraft. No thanks, that is a security nightmare. If you want to power aeroplanes with nuclear power it is possible to manufacture hydrogen and run the aeroplanes on that. Its still a lot more expensive then oil but then you dont have to build a reactor that has to be light and survive being dropped from 10 000m. > It is practical to power an aircraft with a nuclear reactor. The > specific reactor uses air as the propellant. No radioactive material > is released to the environment. However, it may be a slight test of > a persons willingness to utilize the energy source, when you > consider the consequences of the crash of such an air craft. This > does not seem to bother to many people when satelites are > considered. The satellites using radiation to produce heat for themocouples giving small ammounts of electricitye are small and compact and massive units and it is doable to tripple the weight and build them to survive a crash. What you are proposing is an order of magnitude harder to engineer. > Yes I realize that this may be so controversial that it is beyond > anyones willingness to accept. As I understand it, it is stupid with todays technology. That can of course change with new technology. > To me the need for mass transportation is more appropriately solved > by building a land based system. I think we have all gotten into the > mode of getting to our destinations as fast as possible. Where that is possible. > I would gladly travel by train. I have traveled on the train in > China. In China, (PRC that is) the train is a wonderful way to > travel. They run on time and the comfort is much greater than on the > plane. Only in the US is air travel the preferred mechanism for the > masses to travel. Yes, trains are very nice. Regards, -- -- Magnus Redin Lysator Academic Computer Society redin@lysator.liu.se Mail: Magnus Redin, Björnkärrsgatan 11 B 20, 584 36 LINKöPING, SWEDEN Phone: Sweden (0)13 260046 (answering machine) and (0)13 214600Return to Top
Subject: Snow Drift Time Lapse Photography
From: jbox@seaice.colorado.edu (Jason E. Box)
Date: Tue, 19 Nov 1996 21:40:31 GMT
If interested in snow drift and/or time-lapse photogrametry, see the Snow Drift Image and Movie Gallery... http://ucsu.colorado.edu/~box/drift.htmReturn to Top
Subject: Air pollution stats needed
From: vkalia@red.seas.upenn.edu (Vandit Kalia)
Date: 19 Nov 1996 20:58:31 GMT
Hi, Can anyone help me locate a source for obtaining air pollution stats for around 20 cities around the world? I am looking for some measure of air quality that would include particulates, smog, etc. in the air. Thanks, Vandit -- ======================================================================== Vandit Kalia, now webbed at http://www.seas.upenn.edu/~vkalia/home.html ------------------------------------------------------------------------ "With the first link, a chain is forged. The first speech censured, the first thought forbidden, the first freedom denied, chains us all irrevocably"Return to Top
Subject: plastic or glass
From: Jan Degroote
Date: Tue, 19 Nov 1996 22:17:04 +0100
I wonder what's poluting more in order of the whole industrial reaction and the use of a bottle: plastic(pet) or glass. A straight answer with numbers and proofs. Thank You Jan Degroote student environmental engineering BelgiumReturn to Top
Subject: Re: Most enviromentally-friendly way to dispose of a body after death?
From: B.Hamilton@irl.cri.nz (Bruce Hamilton)
Date: Wed, 20 Nov 1996 12:09:56 LOCAL
In article <56s853$hbo@news.taconic.net> dadler@taconic.net (David Iman Adler) writes: >In article <19961115040858987740@ak207.du.pipex.com>, abg21@dial.pipex.com >says... >(article clipped) >Just thought you'd like to hear about the way that Zoroastrians dispose of >bodies. Their religion forbids the polluting of water, earth or air so they >build tall towers called "Towers of Silence". The corpses are put on the tops >of these tall towers for the vultures to eat! The problem is that the vultures don't eat their food at the dinner table, and the Bombay Tower of Silence is surrounded by irate neighbours - tired of having various bits of deceased human dropped onto them and their properties. Bruce HamiltonReturn to Top
Subject: Re: Economists on ecology (Re: GOODBY MIKE!)
From: antonyg@planet.mh.dpi.qld.gov.au (George Antony Ph 93818)
Date: Tue, 19 Nov 1996 23:41:09 GMT
umdudgeo@cc.umanitoba.ca (Roy C. Dudgeon) writes: > Speaking as a Ph. D. candidate in anthropology, I would suggest that >this is not a basic tool of the trade. There is a long tradition of >ecological anthropology which examines the RELTIONSHIP between humans and >their ecological habitats, but which is anything but anthropocentric. In >fact, many of the writings by ecological anthropologists remind one of the >writings of deep ecologists, ecofeminists, or social ecologists. > Thus, while I agree that it is fortunate that there are social >scientists, and ecologists, who think holistically, in terms of the total >ecological, social, IDEOLOGICAL system--such as us anthros--it seems clear >that economics is not such an undertaking. Given your better background than mine in anthropology, I accept your point that some anthropologists are not anthropocentric (nice contradiction, isn't it ?). On the other hand, however grand an achievement it is to be a Ph.D. candidate in anthropology, it hardly makes you an expert on ECONOMICS and certainly makes you unsufficiently equipped to pass such a summary judgement on the whole profession. Besides, holistic thinking necessarily includes a requirement to address economic issues. Hence, social scientists and ecologists considering only the "ecological, social and IDEOLOGICAL" components of the system are not holistic thinkers. George AntonyReturn to Top
Subject: Re: Are these people all mistaken? (World Scientists' Warning to Humanity)
From: rparson@spot.Colorado.EDU (Robert Parson)
Date: 19 Nov 1996 18:48:20 GMT
In articleReturn to Top, John McCarthy wrote: >There was the Heidelberg appeal taking an approximately opposite >position signed by 95 scientists - a smaller number. I disagree with the inference that the Heidelberg Appeal takes "an approximately opposite position". It would appear that many of the signatories also disagree, since a significant number signed _both_ documents, including: P. W. Anderson Christian Anfinsen Julius Axelrod Baruj Bennaceraf Hans Bethe Nicholas Bloembergen Stanley Cohen Gerard Debreu Donald Glaser Roger Guillemin Dudley Herschbach Roald Hoffman Jerome Karle Yuan Lee Wassily Leontieff William Lipscomb Joseph Murray Linus Pauling Harold Varmus Torsten Wiesel I have only a partial list of Heidelberg signatories, specifically the first 46 U.S. scientists to put their names on the appeal. Out of those 46, 20 also signed the "World Scientists' Warning", a significant overlap. Both documents are very vaguely worded and much hinges upon what one decides to read between the lines. I'm not surprised that Paul Ehrlich, for example, signed the "Warning" but not the "Heidelberg Appeal", or that Richard Lindzen signed the latter but not the former. Extremists on both sides have implied or even stated outright that the signatories hold views which are nowhere stated in the documents themselves. ------ Robert
Subject: Re: CO_2 and Iron Fertilization
From: Leonard Evens
Date: Tue, 19 Nov 1996 08:38:14 -0600
John McCarthy wrote: > > The William Broad article in the New York Times confirms what I argued > some months ago. Science, as practiced today, is strongly affected by > ideology. Broad contrasts the attitudes of scientists and engineers. > Engineers want to use science for the benefit of humanity. Scientists > want to learn more. > > This is indeed the proper function of the two groups, but there are > ideological complications. > > I suppose almost all engineers would favor global engineering of > various kinds, including iron fertilization, in so far as they can be > shown to work and to be safe enough. > > Many scientists would agree with them. > > However, the attitude that global engineering is bad in principle is > quite common among certain scientists. Too bad. > > People who have an agenda of reducing the scale of human society > resent any facts that might divert the public and the politicians from > this agenda. We have > > Dr. Sallie W. Chisholm and Dr. Francois M.M. Morel, both of > the Massachusetts Institute of Technology, commented in an > article accompanying the statement, "The 'Geritol Solution' > to global warming has been squelched for the time being, but > it would naive to think that the issue will not come up > again." > > "Geritol solution" is a phrase worthy of a high priced political > consultant. > > Objectivity in a scientist requires willingness to dispute with one's > fellow scientists when ideology drives them off the deep end. > -- > John McCarthy, Computer Science Department, Stanford, CA 94305 > http://www-formal.stanford.edu/jmc/progress/ > During the last years of the Second Millenium, the Earthmen complained > a lot. I wish we could keep ideology out of this discussion as much as possible. But as long as we are going to discuss it, let me say that my ideology, somewhat deeply ingrained, is that science must precede engineering since engineering is by definition applied science. Otherwise you are engaging in magic: activities designed to deal with a situation for symbolic reaons with no reason to believe they will work. Those suggesting action to deal with enhanced greenhouse warming due to fossil fuels are accused of trying to engage in `economic engineering' in order to deal with a problem, it is maintained, that has not been shown to exist with absolute certainty. It seems the reverse argument is even stronger. At this stage, the question of iron fertilization is mainly undone science which should be pursued further until we understand it. Reluctance to engage in engineering on a global scale without fully understanding the consequences seems to my conservative mind merely prudence. That is not to say that one might not have to do something like that if the situation were serious enough. After all, people dying of cancer will often try experimental procedures and drugs because nothing else works. In the case of iron fertilization, the ARITHMETIC that seems generally agreed upon does not at present seem promising. (See Robert Grumbine's posting, for example.) So skepticism about the likelihood of iron fertilization being a sginifcant solution to the problem of climate change seems to me only common sense, not ideology. Indeed, I would characterize a response which assumes that furher ressearch will show it to be more effective than expected as more ideological than the aforementioned mentioned skepticism. Skepticism or optimism about this method aside, it is only by further investigation that the facts will emerge. And such research, as all research on climate change should be encouraged and funded. Given the present political climate, it is not clear that such funding will be forthcoming. Meanwhile on the basis of what we now know, it still seems to me that the possiblity of using iron fertilization in the future does not justify putting off modest measures like energy conservation which may very well stimulate our economies to control the second derivative in the growth of fossil fuel emissions. A note to Bob Grumbine or anyone else. The recent experiments noted in Nature also suggested that iron fertilization could result in increased sulfate aersols and the primary climatological effect of that would be cooling. Can anyone make any back of the envelope calculations of the effects of such additinal sulfate aerosols. However, as Michael Tobis and others have pointed out repeatedly, there is not an exact balance in the way aerosols and greenhouse gases act, so significant climate change is still possible if all forcing from greenhouse gases were compensated for by aerosols. -- Leonard Evens len@math.nwu.edu 491-5537 Department of Mathematics, Norwthwestern University Evanston IllinoisReturn to Top
Subject: High Efficiency Solar
From: snark@swcp.com (snark@swcp.com)
Date: 19 Nov 1996 14:39:39 GMT
Steinn et al.: Here is some material concerning the high efficiency active solar marterial, reported in Scientific American, that I found on the Web. Taken from KeelyNet BBS (214) 324-3501 Sponsored by Vangard Sciences PO BOX 1031 Mesquite, TX 75150 There are ABSOLUTELY NO RESTRICTIONS on duplicating, publishing or distributing the files on KeelyNet except where noted! March 14, 1992 SOLAR2.ASC -------------------------------------------------------------------- This file shared with KeelyNet courtesy of Chuck Henderson. -------------------------------------------------------------------- The following is the information that I received in responce to my telephone query of Phototherm requesting additional information on their new solar cell technology. ....Chuck. -------------------------------------------------------------------- << cover Letter >> ADVANCED RESEARCH DEVELOPMENT, INC. 359R Main Street Athol,MA 01331 TEL.: (508) 249-4696 FAX: (508) 249-2134 February 19,1992 This information package is about an invention by Alvin M. Marks to convert sunlight to electric power. A few years of Research and Development are required to bring the thin film photovoltaic called Lumeloid (tm) into production. Alvin M. Marks was on President Kennedy's Power Panel and owns 120 patents. He invented Polarized film materials, 3D movie technology and co-founded Marks Polarized Corporation. He received many U.S. Government contracts for alternative energy until the early 1980's. Studying the initial phase used in the process of photosynthesis Alvin Marks employed his knowledge of polarizing film materials to design aligned molecular antennae and molecular diodes to convert sunlight directly to electric power. Lumeloid's (tm) projected efficiency is 80%, (many times that of conventional silicon photovoltaics) with an investment cost only a fraction of existing electric power sources. Project Lumeloid's (tm) success will revolutionize the electric power industry with low cost efficient benign technology. Phototherm, Inc., a Public Company, OTC, holds license rights to Alvin Marks' light to electric power conversion patents. Advanced Research Development, Inc. is privately owned and has an exclusive R&D; agreement with Phototherm, Inc. Page 1 Project Lumeloid (tm) is partly funded by the Electric Power Research Institute with Lowell University preparing special materials for Marks' electrically-conducting polarized film. More funds are necessary to expedite Research and Development. Your support will help bring Lumeloid (tm) into Production and enable your participation in a technology beneficial to all. Sincerely, Jonathan Haber Program Director -------------------------------------------------------------------- The following articles and letter were included as part of the information packet. -------------------------------------------------------------------- << The following article is from the "Entrepreneurship Profile" section of "TAIPAN" (magazine?), November 1990 >> SOLAR BREAKTHROUGH - MASSACHUSETTS ENTREPRENEUR POINTS WAY TO PROFITS FROM ENVIRONMENTALLY BENIGN TECHNOLOGY In just two and a half hours enough radiant energy from the sun falls onto the earth to supply all the energy (from all sources) consumed by human civilization in an entire year. The light that falls on a few hundred square kilometers in the Southwestern desert of the United States is enough to power all of North America. The problem, however, has always been how to harness it. The rap against conventional photovoltaic cells (which convert light into electricity) has always been their cost. Conventional silicon- based solar cells convert sunlight to electricity at an average cost above US$0.30 per kilowatt hour (kwh). That is three to five times what an average U.S. household pays for power from the local utility company. It is precisely this cost disadvantage that has limited most solar applications to small-scale operations in remote areas far from commercial power mains. -------------------------------------------------------------------- -> Massachusetts Miracle That is, until now. A 78-year old Massachusetts inventor, Dr. Alvin Marks, has come up with a new kind of solar cell that promises to produce electricity for less than US$0.02 per kwh. If this is true, development of this technology could potentially revolutionize the commercial power generation industry. After all, conventional power plants are like prisons. But nobody wants one built in their neighborhood. On the other hand, a solar plant produces no radiation, smoke, or acid rain. Moreover, its best location would be somewhere in a desert -- where nobody lives anyway. Marks' cost breakthrough was achieved by radical new design that dramatically increases the efficiency of solar conversion. While Page 2 conventional cells are able to capture and convert only 10% to 25% of the sun's energy, Marks' new designs may capture as much as 80%. -------------------------------------------------------------------- -> Dinner With Alvin The genesis of this breakthrough was a dinner conversation that took place seven years ago between Marks and the then Director of the Third World Energy Division of the United Nations, Dr. Usmani. After complaining about a photovoltaic test project in Africa that had to be abandoned because it was too expensive and inefficient, Usmani turned to Marks and said something to the effect of `You're an inventor, can't you invent a better photovoltaic cell.' Few people would be better equipped to accept such a challenge. Marks patented his first invention in January 1938. His early work lead to what the May 1935 issue of "SCIENTIFIC AMERICAN" termed a 1,000 to 1 cost reduction in the fabrication of materials to polarize light. -------------------------------------------------------------------- -> Polaroid Precursor This cost breakthrough was instrumental in the subsequent development of polarized sunglasses and Polaroid film. (In fact, Marks was an early rival of Dr. Edwin Land, developer of the Land Camera and founder of the Polaroid Corp.) In the early 1960s, Marks was science advisor to the Kennedy White House. Today, he holds a total of 120 patents -- a number of which have application to solar power generation. Marks new solar designs -- dubbed LEPCON (Light to Electric Power Converter) and LUMELOID -- are built on an extention of systems commonly used to receive microwave transmissions. (On the spectrum of electromagnetic energy, the difference between microwaves and visible light is merely that the latter have a higher frequency and a shorter wavelength.) Microwaves -- like other radio frequency transmissions -- are best received using an antenna tuned to the wavelength of the incoming signal. (When an electromagnetic wave strikes an electrically conductive material, it induces an alternating current of the same frequency of the incoming wave.) In real-world microwave applications, the efficiency of this connversion approaches 80%. LEPCON consists of millions of microscopic antennas (tuned to the wavelengths of the visible spectrum) embedded in a glass substrate. (LUMELOID use less expensive plastic materials.) -------------------------------------------------------------------- -> A Thousand Points Of Light With microwaves (as well as with radar and radio), however, the same tuned antenna will work as well for transmitting a signal as it does for receiving it. Operate LEPCON in reverse and it becomes a light source. Marks calls this reverse application ELCON (Electricity to Light Converter). ELCON elements in a group become a point of light, or a pixel. Page 3 The same technology used to pack millions of submicron antenna elements in a glass or plastic substrate could be used to produce a new kind of high-definition TV (HDTV) screen with much higher resolution than present technology will allow. Conventional U.S. TV uses 525 scanning lines of pixels per screen. The most ambitious HDTV schemes yet proposed would use something on the order of 1,250 lines per screen. Using ELCON technology, screens using millions of lines may be possible -- for an 80,000% increase in resolution. -------------------------------------------------------------------- -> Phototherm, Inc. Virtually all these ideas and devices have been patented by Marks. But lack of funds for the development of commercial prototypes has been a serious and continuing obstacle. To get LUMELOID off the ground, Marks formed a public company. Phototherm Inc. (OTC-pink sheets). However, it is still some distance away from a commercial product. Marks estimates an additional US$300,000 - US$500,000 will be necessary to get LUMELOID to the prototype stage. While North American interest in solar power has been sliding along with oil prices since the late 1970s, that has not been the case elsewhere. Last year, Marks made a deal with a Chinese company, China Petroleum Engineering Construction Corporation, to develop the LUMELOID prototype. Phototherm Bahamas Ltd. has been established to facilitate this endeavor and Chinese citizens will come to the Bahamas to learn the process. -------------------------------------------------------------------- -> Genius And Fortune Because of the enormous breadth and depth of Marks' work, the "TAIPAN" research department believes no 20th century entrepreneur or inventor is destined to have greater positive effects on the daily lives of millions of people. However, revolutionary ideas are not any guarantee of quick commercial success. Because so much work remains before any of these ventures are likely to reach the stage of a profit-making enterprise, we suspect that attractive returns on Phototherm shares may be distant enough to try the patience of all but the most tenacious investors. However, if war in the Persian Gulf leads to destruction of the Saudi oil fields, we think promising technologies such as LEPCON and LUMELOID would suddenly become clear leaders on the fast track to commercial development. In the meantime, however, investors and entrepreneurs in search of more information should contact Dr. Alvin Marks, c/o Advanced Research Development, Inc.,359 R Main St., Athol, MA USA 01331; (508)249-4696; fax (508)249-2134. -------------------------------------------------------------------- Page 4 << The following article is from the "Money Matters" section of "GREEN LIVING -- A Practical Journal For Friends Of The Environment" magazine, Winter 1991/92 >> INVESTING FOR A CLEANER EARTH AND BIG PAYOFF By Marshall Glickman Would you pay 25 cents for a share of a solar technology for which Exxon offered $9 million? That's the current price of Phototherm Inc., an Athol, Massachusetts, solar technology company which is developing a new ultra-efficient process of harnessing the sun's power. The founder and brains behind Phototherm is Dr. Alvin M. Marks, an octogenarian inventor and entrepreneur whose resume reads like an award ceremony. Dr. Marks is the holder of 120 patents, has degrees from Cooper Union Institute of Technology, Harvard University, and M.I.T., and has served as a scientific advisor to the Kennedy Adminstration. His work on polarizing film built Marks Polarized Corp. into a multimillion dollar business. Eight years ago Dr. Marks turned his full attention to improving the efficiency of solar (photovoltaic) electricity. His work lead to a patent (the one for which Exxon offered $9 million, according to a 1986 "NEW YORK TIMES" report) that claims to convert sunlight to energy at 80% efficiency -- a cost of one to two cents per kilowatt hour. That's less than a fifth of the present cost of energy from fossil fuels and about one twentieth the cost of current photovoltaic systems (which are lucky to achieve 15 percent efficiency). The cost breakthrough is so incredible, that some skeptics immediately dismiss Dr. Marks. But Dr. Marks has made dramatic -- almost unbelievable -- improvements in light technology before. The May 1935 issue of "SCIENTIFIC AMERICAN" noted Marks created a 1,000-to-1 cost reduction in the fabrication of materials to polarize light. His work with Phototherm has also impressed the Electric Power Research Institute, the electric industry's research thinktank. The EPRI recently backed Phototherm with $100,000 and has plans to add another $100,000 soon. Before you mortgage the house and whip out the checkbook, keep in mind that Phototherm is a highly risky investment. And I emphasize the word highly. Even though Dr. Marks is supremely confident his technologies will work, it has never been tested in commercial production. Dr. Marks is also eighty-one years old. Even if his patented design is indeed revolutionary technology, until Phototherm has enough money to hire a team of highly qualified research assistants, it may be difficult to carry on his work should he become ill (his health is excellent). Interest generated from a recent "BUSINESS WEEK" story on Phototherm may help get the company adequately financed, but until the cash comes through Dr. Marks must concentrate on raising money instead of science and building prototypes. Consider investing in Phototherm as you would give money to Page 5 environmental groups -- with the kicker that if it does work out you'll get back a lot more than just clean air. Phototherm is listed on the OTC pink sheets. If you'd like more information about Phototherm, contact program director Jonathan Haber at 359R Main Street; Athol, MA 01331; (508)249-4696. -------------------------------------------------------------------- << The following article is from the "Energy" section of "THE BOSTON GLOBE", February 29,1988 >> ADVANCES BRING SOLAR POWER CLOSER Researchers Say Solar Will Take Off In Mid-90s, While Athol Scientist Claims A Breakthrough By David L. Chandler -- Globe Staff It's not that there's a shortage of energy. In just two and a half hours, enough sunlight falls on the Earth to supply all of mankind's energy needs -- heat, light, cooking, transportation, industry and every other energy-using activity -- for a full year. It's there, the hard part is catching it. Finding a practical and economical way to harness all that free, ubiquitous energy has challenged scientists and engineers since the energy crisis of the early 1970s awakened interest in alternative power sources. No major breakthroughs emerged during the 70s, but researchers say new methods developed in the last few years, and innovations just now emerging from the laboratories, will make solar power -- which is already competitive in some applications -- an increasingly important contributor to the world's energy supply. Most people in the solar energy field expect it will "really take off in about 1993 to 1995," said electrical engineer Richard Swanson of Stanford University, who has developed what are presently the world's most efficient solar cells. For a home or farm in remote areas not served by power lines, a solar-power system "right now is cost-effective against a diesel- power system," the present standard in small electric generators, according to Satyen Deb, manager of photovoltaic research for the federally-funded Solar Energy Research Institute in Colorado. And solar cells have always played an important role in the space program; they are the standard source of power for satellites and other long-term applications. As the US space station takes shape in orbit, their role will become ever more important -- especially since the only real alternative, small nuclear generators, may no longer be acceptable because of fears of what might happen to nuclear fuel in the event of a Challenger-type launch accident. But solar technology will really take off when it becomes competitive with other kinds of power plants that feed the nation's electrical transmission grid. "By the turn of the century, we should make a strong penetration in the grid market," Deb predicted last week. Page 6 Ways of harnessing the sun span the gamut of technology, from the simple to the futuristic, and all have a part to play. -------------------------------------------------------------------- *** At the simple end, there are already several million solar stoves, consisting of dish-shaped aluminum reflectors, being used in India. They have made a dent in the problem of deforestation -- obtaining fuel for cooking is one of the principal reasons for cutting trees in developing countries. *** At the futuristic end, an inventor in Athol has patented a completely new kind of solar-electric cell that he says could be far more efficient and far cheaper than the silicon panels now in use, making solar power practial for everything from individual homes and farms to huge solar installations for utilities. *** And in between, improvements in silicon solar cells promise to bring down costs enough to make this technology competitive with other power sources. Prominent among them is the development of "amorphous silicon," a glass-like material that can be coated onto a thin plastic sheet to replace the expensive pure silicon crystals of traditional solar cells. -------------------------------------------------------------------- Potentially the most exciting development is the solar cell invented by Athol-based Alvin M. Marks, a 77-year-old inventor with more than 100 patents to his name. If his calculations are right, Marks' system could provide all of the nation's electrical needs at a fraction of today's cost with the equivalent of a single 100-mile- square of solar panels located in a sunny desert area -- eliminating the need for coal, oil, or nuclear plants with their attendant hazards. Marks, who was an energy consultant to President Kennedy, was inspired to develop his solar power system during a conversation about the great need for solar power in developing nations, where sunlight tends to be abundant and power plants scarce. "About five years ago," Marks said in an interview, "we were sitting with an official from the United Nations talking about photovoltaics in the Third World. He said,`isn't there something you can do to make them more efficient?'" Marks agreed to think about it, and before long he had concluded there was a way. His first solar patent, for a glass-plate collector he calls Lepcon (light to electric power converter), was issued in 1984. It was followed in 1986 by a patent for a lower-cost, plastic- sheet version called Lumeloid. His latest patent on an improved version of the technology was granted last month. Although some scientists question his figures, Marks says his technology could theoretically have an efficiency of 80 percent -- that is, 80 percent of the sun's power reaching the cell would be converted to usable electricity. By comparison, the most advanced design silicon cell in Swanson's laboratory at Stanford has produced about 28 percent efficiency and available commercial versions average about 10 to 12 percent. The basic technology of Marks' cells is a modification of systems used to pick up microwave transmissions, which do achieve efficiencies of 80 percent in real world applications, not just in Page 7 the lab. Critics, however, point out that microwaves used for communications are all of the same wavelength, while sunlight is a mixture of many wavelengths, or colors, of light. Marks says he has taken this into account, because his cells would consist of millions of tiny "antennas" of different lengths, each tuned to a different wavelength of light so that among them, they would pick up light of all colors. Some critics also question Marks' optimism about how quickly the technology could be made practical for manufacturing in commercial quantities. Marks thinks one version could be in production within two years, while others think it may be quite a few years off. No one, however, disputes the principle involved, which is based on well-established concepts. Conventional solar cells generate electricity with an array of tiny transistor-like areas of semiconductor material on a silicon chip, which absorb energy from light to break electrons loose and send them toward one terminal of the cell, producing an electric current. Marks' cells will use an array of even tinier metal strips, which serve as antennas to pick up energy from light in much the same way that a radio antenna picks up energy from radio waves. The current produced in each antenna is intially AC, or alternating current, unlike the DC (direct current) of conventional cells, but tiny diodes -- one-way electrical "valves" -- in the gaps between antennas would convert the current to DC. Lumeloid, the cheaper but less-durable version of his system, is an offshoot of a polarizing filter that was Marks' first invention. His was the first man-made material commercially produced to polarize, predating Edwin Land's polarizing filters. One version developed later by Marks is still in production for polarizing sunglasses and 3-D movie glasses. Light can be thought of as waves or vibrations, and in ordinary light these vibrations move every which way. In polarized light, the vibrations all move in the same direction -- vertically or horizontally. The production of the polarizing filters, and of Lumeloid, seems to have more in common with candy making than with the high-tech, clean-room process used to make silicon cells. "You make a syrup," Marks explains, of chemicals called polymers that form long-chain molecules, suspended in an electrically conductive material. "You stretch it like taffy, and all the molecules become parallel." In a simple large-scale way, this process yields millions of the microscopic chain-like molecules all lined up in a neat grid that can filter out all the light rays that vibrate in one direction, allowing those that vibrate in the other to pass through -- producing polarized light. By simply adding a different kind of chemical to the recipe -- a "donor- receptor" molecule -- the polarizing filter becomes a solar generator, Marks says. Page 8 Marks expects the lightweight plastic Lumeloid, manufactured by the "taffy-pulling" method to be the first of his solar materials to reach the production stage. If he can raise the financial backing he needs He is negotiating with state and federal agencies as well as private investors), he thinks a prototype could be made in about nine months. "The reason I'm so sure about Lumeloid," Marks said last week, "is because I've been involved in polarizing material for decades, and the materials are not that different." Others are not so sure. Elliot Berman, chief scientist for Arco Solar company, a maker of silicon cells, said in an interview that "it's a good idea, I just don't think he can build it." "It's not that it's impossible," Berman added, "it's just not practical at the present time. It's pretty far away." Berman conceded, however, that he is not familiar with the details of Marks' manufacturing plans. Edgar Demeo, head of solar power research for the Electric Power Research Institute, takes a middle position, saying the Marks system is "an elegant approach to converting solar energy" and "is a very nice idea and is worthy of some basic research at this point." But, he added, it may take "a number of years" to become a commercial product. In the meantime, Berman sees other developments that could reach the market sooner and make substantial inroads in a variety of applications. "I think there are some substantial progress," he said. Solar cells have dropped in price from about $20 per watt of output 15 years ago to about $5 per watt today, and Berman sees the new amorphous silicon cells -- especially a version he calls "tandem cells," where amorphous (glasslike instead of crystalline) cells sensitive to one color of light are paired with cells sensitive to another color in order to improve efficiency -- cutting that price in half within the next two and a half years. That would bring it close to the range of other power sources, which generally cost between $1 and $2 per watt. When that happens, Berman said, solar power will have reached the price level "where we think this will be practical for widespread use. -------------------------------------------------------------------- >>> NOTE: I am including the following letter to provide another possible source of information on his research. -------------------------------------------------------------------- << The following letter is from Zhejiang University in Hangzhou, China. Cable: 0420 HANGZHOU, Telex: 35040 ZUFAO ON, Fax: 0571 - 571797. 723582 >> Page 9 Dept. of Chemistry Zhejiang University Hangzhou, 310027 Dec. 20, 1991 President Alvin M. Marks Advanced Research Development Inc. 359R Main Street, Athol, MA01331 U.S.A. Dear President Marks: Thank you for your letter of oct. 29. I'm very glad to inform you that the proposal of cooperation between our university and your Inc. on the research of polymeric light /electric power conversion has been approved by our university. Now, we are waiting the reply from the Chinese Petrolium Engineering Construction Corporation (CPECC) for the financial support to this project. In our institute, about ten staff members including five professors, five doctors and graduated students will be involved in this research work. We look forward to a fruitful and mutually stimulating program of cooperation between us. Merry Christmas and wish you a happy new year. Sincerely, Xu You-yi cc: The members involved in the program in our Institute. Prof.: Shi-ling Yang Associate Prof.: You-yi Xu; Mang Wang; Mu-jie Yang; Qing-mei Hu Dr.: Zhi-kang Xu; Hong-zhen Chen Graduated students: Zhi-ping Lu; Pu-deng Pan; Jiu-li Shen -------------------------------------------------------------------- The information in this file is in response and addition to the material that is contained in file SOLAR1.ASC (or .ZIP). If you want more information, I will be posting another file (SOLAR3.) shortly. -------------------------------------------------------------------- If you have comments or other information relating to such topics as this paper covers, please upload to KeelyNet or send to the Vangard Sciences address as listed on the first page. Thank you for your consideration, interest and support. Jerry W. Decker.........Ron Barker...........Chuck Henderson Vangard Sciences/KeelyNet -------------------------------------------------------------------- If we can be of service, you may contact Jerry at (214) 324-8741 or Ron at (214) 242-9346 -------------------------------------------------------------------- Page 10 snarkReturn to Top
Subject: ATTENTION HOMEOWNERS
From: aaront@pp.sdstate.edu (Aaron Tonsager)
Date: 19 Nov 1996 19:21:30 GMT
Learn the ugly facts about your home mortgage and how a FREE service can save you thousands of dollars! If interested, please reply directly to me requesting more information. Aaron Tonsager aaront@pp.sdstate.eduReturn to Top
Subject: Re: Global oil production could peak in as little as four years!
From: larson@net.com (Alan Larson)
Date: 20 Nov 1996 00:25:19 GMT
In article <328A7837.103@ix.netcom.com> mfriesel@ix.netcom.com writes: >Nahh, it's a design problem, and it's much easier, just for example, >to design a home solar panel that doesn't require you to get on the >roof. You won't get management of these complex powerplants to change >their habits either, nor the tendency of their masters to look at >short-term profit at the expense of safety. Where do you propose to put this solar panel? You perhaps forgot that many people live in places where they don't have acres of back yard to put the panels. At my place, the choice is on the roof, or in the shade. AlanReturn to Top
Subject: Re: Major problem with climate predictions
From: charliew@hal-pc.org (charliew)
Date: Wed, 20 Nov 96 00:17:04 GMT
In article <3290D151.7B03@bellsouth.net>, Raymond D'AntuonoReturn to Topwrote: >Mike Asher wrote: >> >> charliew wrote: >> > >> > Science done properly takes time and patience. To date, >> > many posters seem to have indicated that they do not have >> > the patience to fully test the current climate theories. >> > >> > >I'm sorry that I missed the original post titled "Major problem with >climate predictions", for I would love to have seen the post that started >this thread, and to know what the original poster thought was the major >problem with climate predictions. Here are my thoughts on the matter. > >The major problem with climate predictions, in my opinion, is that it is >nearly impossible to say, with any certainty, what the precise effect of >increasing the CO2 concentration in our atmosphere will be. Most people do not deal well with uncertainty. (cut) >One thing I believe is certain, however, is that at the rate we are >realeasing CO2 into the atmosphere, there will be a change in climate >eventually. Anyone familiar with chaos theory knows that just merely a >small change on a minute scale can have an impact on the entire system. Not entirely correct. ANY change can have a big impact. Obviously, this leads to quite a quandary, doesn't it? (cut) >The workings of the atmosphere, short-term patterns and their long-term >consequences, or climate patterns, are the epitome of chaos theory. And >although no one really knows the precise long-term effects of the rising >CO2 concentration, I would imagine that the balance will be altered in >some way that will eventually be noticeable, and I believe that there is >a chance that if we do not curb CO2 emissions that climates may change >for the worse. There is no way to know that without either having very good climate models, or actually doing the "experiment" that we are now doing (e.g., adding more CO2 to the atmosphere). You pessimistic types automatically assume the worse, even when there is no evidence to back you up. > >Now the current thinking of defenders of the status-quo is something like >this - until there is undeniable proof of a catastrophe ahead, we will >keep going about our business. But think of it this way: If you took >your child to an amusement park, and you suddenly heard that there was a >five percent chance that the roller coaster that he had ridden many times >before could jump the track at any time, sending all those aboard to a >potentially violent death, would you even consider letting your child >ride on that roller coaster again? You wouldn't even have a chance to >consider it, since the authorities would have shut it down already! I so love it when you take this approach. If you can't convince someone on scientific grounds based on available physical evidence, you go for the "trump card". Whip out that example of "hurting a child" to get people emotionally involved in the discussion. Good move. Unfortunately, this is a cheap shot that I have learned to recognize (liberals have used this trick so often that I am tired of listening). Please choose another trick. This one is getting boring. >So >why are we willing to play russian roulette with our environment? > Another appeal to emotion! I *do not* base my scientific decisions on emotion. >> What disturbs me more than their lack of solid reasoning, charlie, is their >> apparent *desire* to believe in the worst, to believe man is nothing more > >What disturbs me is the russian roulette attitude of the defenders of the >status-quo. Unfortunately, there is so much money involved in the >current energy production technologies that even if undeniable evidence >were produced, the fat cats would still do their damndest to ensure that >they went to their graves filthy rich despite the untold suffering >they would pass on future generations. (Oh, I'm sorry, I think I just >fired a shot at capitalism!) Yes, you did. And as I have recently observed, the more radical "environmentalists" are actually looking for control. They want to control the economy, they want to control the individuals that society is made of, and they probably want to control other things that are not even apparent yet. Bashing capitalism, and taking away people's ability to maintain economic freedom, is a *very* good way to gain control over them. I prize free speech, so preach on! BTW, don't expect me to agree with your view of the world.
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Byron Palmer