"we want to calculate the heat enrgy of a gas molecule(adsbygoogle = window.adsbygoogle || []).push({});

n - is the number of molecules per volume

v_th - is the average speed of gas molecule

L - is the distance which travels one molecule in a certain time

we have six directions for which they travel

+-x +-y +-z

so in each time n/6 of the molecules travel in every one of those 6 dircetion."

i cant see how?

we have n molecules why they divided evenly

it could be the in the +z direction move 5/6n of the molecules

??

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# Cant understand those lines in a text about solid state physics

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