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/sci/ - Science & Math

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11124331 No.11124331 [Reply] [Original]

What is the temperature of a gas-particle moving near the speed of light?

>> No.11124333
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11124333

>>11124331
Single particles do not have a temperature associated with them.

>> No.11124337

>temperature of a particle

The temperature of many gas """particles""" moving at the speed of light would equal to approximately HOT degrees Celsius though.

>> No.11124371

>>11124331
https://en.wikipedia.org/wiki/Absolute_hot

>> No.11124406

But if particles have momentum, they have kinetic energy. I know temperature in molecular dynamics can be measured using the average kinetic energy of the system, but that implies each particle has a kinetic energy that an individual temperature can be taken from via the equipartition theorem. From this we can further measure rotational and translational kinetic energy and thus respective temperatures. So what happens as they move with velocities close to the speed of light?

>> No.11124414

>>11124406
Stat mech is a classical theory, so I don't know what happens in the neighborhood of the speed of light. However, temperature is strictly a macroscopic property. It still doesn't make sense for a single particle.