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Old 08-25-2009, 08:22 PM   #11
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Was that the transparent to x-rays story? Only worked for miniscule amounts and it's extremely unstable, if I recall correctly. Sorry, Scotty.
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Main Entry: co de pen dence - see codependency
co de pen den cy
Pronunciation: \kō-di-ˈpen-dən(t)-sē\
Function: noun
Date: 1979

: a psychological condition or a relationship in which a person is controlled or manipulated by another who is affected with a pathological condition (as an addiction to alcohol or heroin) ; broadly : dependence on the needs of or control by another
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Old 08-26-2009, 04:35 AM   #12
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That's an interesting brute force method, but not exactly what I was thinking of.
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I remember The RoadWarrior..To understand who he was, you have to go back to another time..the world was powered by the black fuel & the desert sprouted great cities..Gone now, swept away..two mighty warrior tribes went to war & touched off a blaze which engulfed them all. Without fuel, they were nothing..thundering machines sputtered & stopped..Only those mobile enough to scavenge, brutal enough to pillage would survive. The gangs took over the highways, ready to wage war for a tank of juice
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Old 08-26-2009, 04:41 AM   #13
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Oh, you were being literal. I'm not sure how your idea would work, since the impact of photons is extremely small compared to that of sound waves.
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Main Entry: co de pen dence - see codependency
co de pen den cy
Pronunciation: \kō-di-ˈpen-dən(t)-sē\
Function: noun
Date: 1979

: a psychological condition or a relationship in which a person is controlled or manipulated by another who is affected with a pathological condition (as an addiction to alcohol or heroin) ; broadly : dependence on the needs of or control by another
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Old 08-26-2009, 07:30 AM   #14
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Yes, but you'd be using a much smaller wavelength, x-ray or higher, need to work out the angle of incidence for internal reflection from the front surface, (Might need very smooth or highly regular structure of Al to even hope to get anything) and you'd need a highly coherent x-ray source and beam splitter... simplistically when you applied the source illumination back in antiphase to what bounced back from the front surface, you'd get some kind of "picture" of what was happening.... as long as the source illumination is bright enough, the thermal noise is low enough, the aluminum structure is uniform enough and the alignment of the planets is favorable.... This sort of thing mayyyy become more practical with advances in making large metal mono-crystals, and engineering a metal specifically to be easy to see through.

But anyway, that wouldn't work to see through the aluminum panels under your car, because any dirt on it would mess things up.
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I remember The RoadWarrior..To understand who he was, you have to go back to another time..the world was powered by the black fuel & the desert sprouted great cities..Gone now, swept away..two mighty warrior tribes went to war & touched off a blaze which engulfed them all. Without fuel, they were nothing..thundering machines sputtered & stopped..Only those mobile enough to scavenge, brutal enough to pillage would survive. The gangs took over the highways, ready to wage war for a tank of juice
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Old 08-26-2009, 07:37 AM   #15
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It's the noise low enough part that concerns me.
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Main Entry: co de pen dence - see codependency
co de pen den cy
Pronunciation: \kō-di-ˈpen-dən(t)-sē\
Function: noun
Date: 1979

: a psychological condition or a relationship in which a person is controlled or manipulated by another who is affected with a pathological condition (as an addiction to alcohol or heroin) ; broadly : dependence on the needs of or control by another
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