3 ms·
when any gas expands, it does work in expanding against the outside "surface" of the control volume, which comes from the internal energy - temperature - of the
by kashkhan 9y ago
when any gas expands, it does work in expanding against the outside "surface" of the control volume, which comes from the internal energy - temperature - of the molecules.
The equations are commonly derived in thermodynamics undergrad courses. look up adiabatic expansion.
here's a video:
https://www.youtube.com/watch?v=ObnWb7yspxA https://www.youtube.com/watch?v=ObnWb7yspxA
- abainbridge 9y agoGood point. I stand corrected. I still think that the radiating-into-space effect I mentioned is real. I imagine this is part of the reason there is convection in the atmosphere. But I'm out of my depth.