Re: if there was no gravity, would heat still rise?
 

it's possible to weld in a vacuum :)

Re: if there was no gravity, would heat still rise?
 

Dunno the answer to your question but i do know that with no gravity when nekkid me nuts would get in the way! would be like having a constant semi with ya testicles either side of it too. It would look a bit like standing on ya head nekkid. Try it.

Also the term 'its a floater' would be more realistically suited.

HTH

Re: if there was no gravity, would heat still rise?
 

Thor is on the right lines. The lack of gravity would prevent convection. Other means of heat transfer along a hot----->cold gradient would still work.

Re: if there was no gravity, would heat still rise?
 

yeah you can weld in a vacuum, cos i'm listening to the Halo series of audio books at the mo and they just did it. ;)

Re: if there was no gravity, would heat still rise?
 

Yes, but he forgot to mention that in conducting solids there's not just lattice vibration, there's electrons carrying energy about too.

Re: if there was no gravity, would heat still rise?
 

What a bunch of smartarses we have on here:D

Re: if there was no gravity, would heat still rise?
 

Lol. That was my physics teachers favourite rant. So much so we used to ask if heat rises every lesson.

"heat does not rise! Hot fluid rises!"

But what he said, 'it' rises because the particles are less dense (I.e. Less massive) and therefore the more dense (cooler) part if the fluid is more attracted to the earth.

Just because you are in space doesn't mean theres no gravity, how do you think we orbit the sun. The hot fluid would radiate away from whichever body caused the greatest gravitational force, although in practice the forces would be so negligible you would get a uniform distribution.

On the other hand if you mean if gravity didn't exist you're talking about changing all the laws of physics... Would heat even be possible in that 'world'?

Re: if there was no gravity, would heat still rise?
 

So my engine casing should be alright when I take my Chinese Sanya sy125 for an interspacial adventure & realise I could do with a bit more oomph?

Re: if there was no gravity, would heat still rise?
 

Would a vaccum cleaner work in a Vaccum, thats my question

Re: if there was no gravity, would heat still rise?
 

working on another conference at the barbican so I'll prolly post another random question later today... :)