i was just wondering how light comes to be, from light bulbs or flash lights...
is it energy transferred through the particles in the air?
I'm still new to physics and am curous about this :-p
for the can not to implode,it would have to be made of some strong material, and that would probably increase the mass. thus, the density would increase and i doubt it's density would still be less than that of air, so i think it wouldn't :)
at least, that's how i see it :)