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Natural Science Forum / Physics / General Physics / June 2007Dense gas experiments on the Jay Leno Show last night (Wed., June 27th, 2007)
Jay had a physicist who demonstrated the properties of one gas whose density exceeds air by 5x. This gas is very inert, and it is not noxious at all. As a matter of fact, if you were to breathe it, your voice's pitch would decrease by 2 octaves or so! In one amazing experiment, he had a box full of this gas. Since it's so heavy, it will escape its container. Then he levitated a foil piece on the top of this. That was so amazing to me! I was recently thinking of the possibilty of levitation on magnets. Why is this so difficult, and how many decades are we away from this possibility? Why does it take a lot of energy to levitate, when in fact, you're not doing any work (in the physical sense)? > Jay had a physicist who demonstrated the properties of one gas whose > density exceeds air by 5x. This gas is very inert, and it is not [quoted text clipped - 9 lines] > possibility? Why does it take a lot of energy to levitate, when in > fact, you're not doing any work (in the physical sense)? Energy? Levitating with permanent magnets doesn't expend energy. > Jay had a physicist who demonstrated the properties of one gas whose > density exceeds air by 5x. This gas is very inert, and it is not > noxious at all. As a matter of fact, if you were to breathe it, your > voice's pitch would decrease by 2 octaves or so! [snip] This is actually potentially quite dangerous. Consider breathing in a bunch of this stuff, and then talking. Hey, now your lungs are full of this gas. And it's heavier than air, so it will tend to sit in the bottom of your lungs. Depending on how well it mixes with the air you breathe, it may be pretty slow at leaving. So there is a non-trivial suffocation hazard. The general rule is, if you do this stunt, you are supposed to park yourself upside down for a few minutes, to let the gas out of your lungs. Socks |
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