3 ms·
- The average movement of a solid is often zero, while its temperature is usually higher. - Movement has an implied direction even if we ignore it sometimes. T
by yyyk 3y ago
- The average movement of a solid is often zero, while its temperature is usually higher.
- Movement has an implied direction even if we ignore it sometimes. Temperature does not.
- A gas molecule can move a lot but have low temperature because it has little to collide with.
It's more accurate to talk about vibration/collisions rather than movement.
- zelphirkalt 3y agoMy idea back then was: What is vibration, other than movement of tiniest particles? But yes, maybe collision is what actually makes the temperature? Lets assume all the molecules where moving like they usually do, but for some insignificantly small chance, they do have no collisions for a few seconds. Would the object have a temperature?
- yyyk 3y ago>What is vibration, other than movement of tiniest particles? Imagine a pendulum, moving back and forth. The average movement is zero! Even for different pendulums moving at different speeds. Vibration is a similar case. Obviously movement is not the most useful way to examine these systems, we want to look at other things too. Temperature is a measure of the kinetic energy involved. >maybe collision is what actually makes the temperature Kinetic energy is involved in both collisions and vibrations. >but for some insignificantly small chance, they do have no collisions for a few seconds We can compare to atomic fission, where the fission is also probabilistic - but the result is very predictable.