Question

Defination of temperature and velocity distribution

Answer 1

Letbe the electron velocity distribution atz= 0, which we assume for simplicity to be isotropic. This approximation is reasonable since the bulk of the electrons has been inferred to be roughly isotropic in thisregion: an observation made during a Voyager roll maneuver was found to be compatible withatlatitude for the bulk population ([Sittler and Strobel 1987]); such a small anisotropy is expected to have negligible consequences on our results.From Liouville's theorem, the velocity distribution is constant along particle trajectories, so that the distribution at distanceziswith, from conservation of energy

Answer 2

hola there The thermal velocity or thermal speed is a typical velocity of the thermal motion of particles which make up a gas, liquid, etc. Thus, indirectly, thermal velocity is a measure of temperature. ... Since the thermal velocity is only a "typical" velocity, a number of different definitions can be and are used.