I have learnt that the temperature of something is a direct measurement of the kinetic energies of the molecules in it.
Going by this argument, if the flow speed of fluid is increased in a pipe, and a thermometer measures its temperature with respect to a stationary frame, the thermometer should show an increase in temperature since the net kinetic energy of the fluid has evidently increased.
However, this is not the case. Why so ? Is it that temperature is velocity variant ?
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