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asked Why does the speed of the propellant limit the speed of a space ship in open space?
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comment What forces are at play when molecules wiggle (due to heat)?
@Crazy Buddy I'm sure Google has the answers ;) although trivial googling didn't bring the precise answers I was expecting. Anyway, the funny thing with Programming SE's (where I spend more time) is that you can't direct people to Google, as Programming SE web sites themselves have the best answers and they come up first when you google ;) Physics.SE could become a default source too, in principle, couldn't it
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accepted What forces are at play when molecules wiggle (due to heat)?
Oct
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comment What forces are at play when molecules wiggle (due to heat)?
Ok, thanks again. There is one other thing I'm curious about: can electromagnetic radiation cause thermal motion? What I mean by this is, if hot objects radiate, then can radiation cause heat? If yes then how?
Oct
2
comment What forces are at play when molecules wiggle (due to heat)?
Thanks for the clarification. Heat is motion, true, I think I understand that, but what is the nature of thermal vibrations? I.e. how can this motion be explained using known forces? As far as I know it can't be explained by collisions alone, because molecules in a crystal don't even collide, and yet they vibrate when heated.
Oct
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comment What forces are at play when molecules wiggle (due to heat)?
To my understanding, you described the motion itself, but you didn't explain what keeps the whole system running. In other words, why doesn't a system - gas, liquid, solid - come to a rest? Due to temperature. So how does heat exactly make molecules move?
Oct
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comment What forces are at play when molecules wiggle (due to heat)?
@Crazy Buddy what can I say, go ahead and downvote it if you can't answer. The question, again: what forces keep molecules vibrating in thermal motion?
Oct
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comment What forces are at play when molecules wiggle (due to heat)?
So why doesn't your assemblage come to a state of rest in the end?
Oct
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comment What forces are at play when molecules wiggle (due to heat)?
@poorsod thermal motion.
Oct
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comment What forces are at play when molecules wiggle (due to heat)?
@pporsod so there are no forces and no explanation to this motion?
Oct
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asked What forces are at play when molecules wiggle (due to heat)?
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