do you know what's the princinple of diffusion?

送交者: blobfish 于 2011-04-04, 13:40:15:

回答: air is heated, carrying the particles. 由 tj 于 2011-04-04, 13:31:01:

It is mass determinated. Solid particle moves much smaller than the gas molecule by sqrt(1/M).

Moreover, your temperature assuption was wrong:
one side of the tube is 1000K, the other side of the tube is 333K, so the volume expansion is about 150%

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