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![]() "Heavier-than-air flying machines are impossible." -Lord Kelvin, President of the Royal Society "Airplanes are interesting toys of no military value." -Marshal Ferdinand Foch, Ecole Superieure de Guerre, France "There is no likelihood man can ever tap the power of the atom." -Robert Millikan, Nobel Prize in physics, 1923 "The biggest fool thing we have ever done. The [atom] bomb will never go off, and I speak as an expert in explosives." -ADM William D. Leahy to President Truman "There is no hope for the fanciful idea of reaching the moon because of the insurmountable barriers of escaping Earth's gravity." -Dr. Forest R. Moulton, astronomer "Man will never reach the moon regardless of all future scientific advances." -Dr. Lee DeForest, "Father of Radio and Grandfather of Television" Said Wilbur Wright, "I confess that in 1901, I said to my brother Orville that man would not fly for 50 years. Two years later we ourselves made flights. This demonstration of my impotence as a prophet gave me such a shock that ever since I have distrusted myself and avoided all predictions." Orville fared no better, declaring "No flying machine will ever fly from New York to Paris . . . [because] no known motor can run at the requisite speed for four days without stopping." And this from Vanevar Bush, our own head of defense research and one of America's most visionary men, testifying to Congress just after World War II (1945): "There has been a great deal said about a 3,000-mile-high angle rocket. In my opinion such a thing is impossible for many years. The people who have been writing these things that annoy me have been talking about a 3,000-mile-high angle rocket shot from one continent to another, carrying an atomic bomb and so directed as to be a precise weapon which would land exactly on a certain target, such as a city. I say, technically, I don't think anyone in the world knows how to do such a thing, and I feel confident that it will not be done for a very long period of time to come. . I think we can leave that out of our thinking." "There is nothing more difficult to take in hand, more perilous to conduct, or more uncertain in its success, than to take the lead in the introduction of a new order of things. For the reformer has enemies in all those who profit by the old order, and only lukewarm defenders in all those who would profit by the new order, this lukewarmness arising partly from fear of their adversaries . . . and partly from the incredulity of mankind, who do not truly believe in anything new until they have had actual experience of it." -Niccolo Machiavelli, 1532 http://www.au.af.mil/au/ssq/2012/spring/garretson.pdf s |
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On Tuesday, June 5, 2012 8:52:07 PM UTC-7, jonathan wrote:
"Heavier-than-air flying machines are impossible." -Lord Kelvin, President of the Royal Society "Airplanes are interesting toys of no military value." -Marshal Ferdinand Foch, Ecole Superieure de Guerre, France "There is no likelihood man can ever tap the power of the atom." -Robert Millikan, Nobel Prize in physics, 1923 "The biggest fool thing we have ever done. The [atom] bomb will never go off, and I speak as an expert in explosives." -ADM William D. Leahy to President Truman "There is no hope for the fanciful idea of reaching the moon because of the insurmountable barriers of escaping Earth's gravity." -Dr. Forest R. Moulton, astronomer "Man will never reach the moon regardless of all future scientific advances." -Dr. Lee DeForest, "Father of Radio and Grandfather of Television" Said Wilbur Wright, "I confess that in 1901, I said to my brother Orville that man would not fly for 50 years. Two years later we ourselves made flights. This demonstration of my impotence as a prophet gave me such a shock that ever since I have distrusted myself and avoided all predictions." Orville fared no better, declaring "No flying machine will ever fly from New York to Paris . . . [because] no known motor can run at the requisite speed for four days without stopping." And this from Vanevar Bush, our own head of defense research and one of America's most visionary men, testifying to Congress just after World War II (1945): "There has been a great deal said about a 3,000-mile-high angle rocket. In my opinion such a thing is impossible for many years. The people who have been writing these things that annoy me have been talking about a 3,000-mile-high angle rocket shot from one continent to another, carrying an atomic bomb and so directed as to be a precise weapon which would land exactly on a certain target, such as a city. I say, technically, I don't think anyone in the world knows how to do such a thing, and I feel confident that it will not be done for a very long period of time to come. . I think we can leave that out of our thinking." "There is nothing more difficult to take in hand, more perilous to conduct, or more uncertain in its success, than to take the lead in the introduction of a new order of things. For the reformer has enemies in all those who profit by the old order, and only lukewarm defenders in all those who would profit by the new order, this lukewarmness arising partly from fear of their adversaries . . . and partly from the incredulity of mankind, who do not truly believe in anything new until they have had actual experience of it." -Niccolo Machiavelli, 1532 http://www.au.af.mil/au/ssq/2012/spring/garretson.pdf s perhaps beamed power is what is needed for cheaper off surface launches. I think the angle for the power would have advantages. The nuclear power proponents especially those of light water reactors and current class breeders are fools or worse. Maybe thorium reactors but.................. Maybe fusion reactors 20 years from now, LOL. First, I replace most of the housing stock with houses buried in the ground or at least with R-60 insulation, a batch HW, some solar panels, detached from the grid, regulated fresh air intake and maybe gas connection to power a fuel cell array. Coal should stay in ground except for coke as related to steel production. Oil shouldn't be burned. It should be used for needed plastics and lubs. a better designed world............................Trig |
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On 6/06/2012 1:52 PM, jonathan wrote:
"Heavier-than-air flying machines are impossible." -Lord Kelvin, President of the Royal Society "Airplanes are interesting toys of no military value." -Marshal Ferdinand Foch, Ecole Superieure de Guerre, France "There is no likelihood man can ever tap the power of the atom." -Robert Millikan, Nobel Prize in physics, 1923 "The biggest fool thing we have ever done. The [atom] bomb will never go off, and I speak as an expert in explosives." -ADM William D. Leahy to President Truman "There is no hope for the fanciful idea of reaching the moon because of the insurmountable barriers of escaping Earth's gravity." -Dr. Forest R. Moulton, astronomer "Man will never reach the moon regardless of all future scientific advances." -Dr. Lee DeForest, "Father of Radio and Grandfather of Television" Said Wilbur Wright, "I confess that in 1901, I said to my brother Orville that man would not fly for 50 years. Two years later we ourselves made flights. This demonstration of my impotence as a prophet gave me such a shock that ever since I have distrusted myself and avoided all predictions." Orville fared no better, declaring "No flying machine will ever fly from New York to Paris . . . [because] no known motor can run at the requisite speed for four days without stopping." And this from Vanevar Bush, our own head of defense research and one of America's most visionary men, testifying to Congress just after World War II (1945): "There has been a great deal said about a 3,000-mile-high angle rocket. In my opinion such a thing is impossible for many years. The people who have been writing these things that annoy me have been talking about a 3,000-mile-high angle rocket shot from one continent to another, carrying an atomic bomb and so directed as to be a precise weapon which would land exactly on a certain target, such as a city. I say, technically, I don't think anyone in the world knows how to do such a thing, and I feel confident that it will not be done for a very long period of time to come. . I think we can leave that out of our thinking." "There is nothing more difficult to take in hand, more perilous to conduct, or more uncertain in its success, than to take the lead in the introduction of a new order of things. For the reformer has enemies in all those who profit by the old order, and only lukewarm defenders in all those who would profit by the new order, this lukewarmness arising partly from fear of their adversaries . . . and partly from the incredulity of mankind, who do not truly believe in anything new until they have had actual experience of it." -Niccolo Machiavelli, 1532 http://www.au.af.mil/au/ssq/2012/spring/garretson.pdf You will notice that all those claims relate to the possibility of doing something, not to its economics. There is little doubt that a space power system could be implemented if there were sufficient motivation. It's not as if there's any part of it that's a theoretical problem, or even an engineering one. But economics does raise its head. Will it ever be cheaper to build a space power system than to build a ground based power system that delivers the same power? Therein lies the real question. Sylvia. |
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Il 06/06/2012 05:52, jonathan ha scritto:
"There is nothing more difficult to take in hand, more perilous to conduct, or more uncertain in its success, than to take the lead in the introduction of a new order of things. For the reformer has enemies in all those who profit by the old order, and only lukewarm defenders in all those who would profit by the new order, this lukewarmness arising partly from fear of their adversaries . . . and partly from the incredulity of mankind, who do not truly believe in anything new until they have had actual experience of it." -Niccolo Machiavelli, 1532 LOL ! you elegantly put the basic difference between Latins and germanic/ Anglo-saxons; these words I always applied to their original humanistic context, e.g. politics and society, but an german/anglo-saxon applies this to the scientific & technical context. Best regards from Italy, dott. Piergiorgio. |
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On Jun 6, 2:21*am, Sylvia Else wrote:
On 6/06/2012 1:52 PM, jonathan wrote: "Heavier-than-air flying machines are impossible." * * * *-Lord Kelvin, President of the Royal Society "Airplanes are interesting toys of no military value." * * *-Marshal Ferdinand Foch, Ecole Superieure de Guerre, France "There is no likelihood man can ever tap the power of the atom." * * * *-Robert Millikan, Nobel Prize in physics, 1923 "The biggest fool thing we have ever done. The [atom] bomb * *will never go off, and I speak as an expert in explosives." * * * * -ADM William D. Leahy to President Truman "There is no hope for the fanciful idea of reaching the moon because of the insurmountable barriers of escaping Earth's gravity." * * *-Dr. Forest R. Moulton, astronomer "Man will never reach the moon regardless of all future * *scientific advances." * * * *-Dr. Lee DeForest, "Father of Radio and Grandfather * * * * *of Television" Said Wilbur Wright, "I confess that in 1901, I said to my brother Orville that man would not fly for 50 years. Two years later we ourselves made flights. This demonstration of my impotence as a prophet gave me such a shock that ever since I have distrusted myself and avoided all predictions." Orville fared no better, declaring "No flying machine will ever fly from New York to Paris . . . [because] no known motor can run at the requisite speed for four days without stopping." And this from Vanevar Bush, our own head of defense research and one of America's most visionary men, testifying to Congress just after World War II (1945): "There has been a great deal said about a 3,000-mile-high angle rocket. In my opinion such a thing is impossible for many years. The people who have been writing these things that annoy me have been talking about a 3,000-mile-high angle rocket shot from one continent to another, carrying an atomic bomb and so directed as to be a precise weapon which would land exactly on a certain target, such as a city. I say, technically, I don't think anyone in the world knows how to do such a thing, and I feel confident that it will not be done for a very long period of time to come. . I think we can leave that out of our thinking." "There is nothing more difficult to take in hand, more perilous to conduct, or more uncertain in its success, than to take the lead in the introduction of a new order of things. For the reformer has enemies in all those who profit by the old order, and only lukewarm defenders in all those who would profit by the new order, this lukewarmness arising partly from fear of their adversaries . . . and partly from the incredulity of mankind, who do not truly believe in anything new until they have had actual experience of it." -Niccolo Machiavelli, 1532 http://www.au.af.mil/au/ssq/2012/spring/garretson.pdf You will notice that all those claims relate to the possibility of doing something, not to its economics. There is little doubt that a space power system could be implemented if there were sufficient motivation. It's not as if there's any part of it that's a theoretical problem, or even an engineering one. But economics does raise its head. Will it ever be cheaper to build a space power system than to build a ground based power system that delivers the same power? Therein lies the real question. Sylvia. And that is exactly the point that Jonathan is failing to perceive. Anything is possible if enough money is thrown at it. |
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On Wed, 6 Jun 2012 10:44:54 -0400, Jeff Findley
wrote: SNIP People also said SpaceX would never be able to get Falcon 9 to fly and that NASA would never let them berth Dragon to ISS because they'd never be able to meet the specs. The way to prove you can do something is to do it. Until space based power proves that it can be cheaper than terrestrial based power, it isn't cheaper. In fact, it does not yet exist! Until SPSs are beaming power to earth and selling it for less than terrestrial based power, you've proved absolutely nothing. What about safety? Unless the SPS is at the top of a space elevator, it will involve the beaming of significant amounts of power. What guarantees that such a beam can never get directed at an unwilling recipient? -- Terry V. |
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On Thu, 7 Jun 2012 11:01:42 -0400, Jeff Findley
wrote: In article , says... On Wed, 6 Jun 2012 10:44:54 -0400, Jeff Findley wrote: SNIP People also said SpaceX would never be able to get Falcon 9 to fly and that NASA would never let them berth Dragon to ISS because they'd never be able to meet the specs. The way to prove you can do something is to do it. Until space based power proves that it can be cheaper than terrestrial based power, it isn't cheaper. In fact, it does not yet exist! Until SPSs are beaming power to earth and selling it for less than terrestrial based power, you've proved absolutely nothing. What about safety? Unless the SPS is at the top of a space elevator, it will involve the beaming of significant amounts of power. What guarantees that such a beam can never get directed at an unwilling recipient? As I said earlier, the energy per second per square meter would be low enough that it wouldn't be an effective "death ray". Me thinks you've been watching too many (bad) sci-fi movies. I didn't mention any death rays - and I try to watch only good movies. Any useful power beam can be unwelcome even though less-than-lethal, since some of its power will be absorbed on the ground even without a rectenna. How about if your neighbor country (with whom you have a border dispute) makes your highland snow pack melt too quickly, causing floods and then a drought? -- Terry V. |
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On Thursday, June 7, 2012 1:29:41 PM UTC-7, Strobe wrote:
On Thu, 7 Jun 2012 11:01:42 -0400, Jeff Findley wrote: In article , says... On Wed, 6 Jun 2012 10:44:54 -0400, Jeff Findley wrote: SNIP People also said SpaceX would never be able to get Falcon 9 to fly and that NASA would never let them berth Dragon to ISS because they'd never be able to meet the specs. The way to prove you can do something is to do it. Until space based power proves that it can be cheaper than terrestrial based power, it isn't cheaper. In fact, it does not yet exist! Until SPSs are beaming power to earth and selling it for less than terrestrial based power, you've proved absolutely nothing. What about safety? Unless the SPS is at the top of a space elevator, it will involve the beaming of significant amounts of power. What guarantees that such a beam can never get directed at an unwilling recipient? As I said earlier, the energy per second per square meter would be low enough that it wouldn't be an effective "death ray". Me thinks you've been watching too many (bad) sci-fi movies. I didn't mention any death rays - and I try to watch only good movies. Any useful power beam can be unwelcome even though less-than-lethal, since some of its power will be absorbed on the ground even without a rectenna. How about if your neighbor country (with whom you have a border dispute) makes your highland snow pack melt too quickly, causing floods and then a drought? -- Terry V. Assuming the beamed energy is in the form of microwaves. Or that its only one beam aimed at the spot. |
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