We may exploit this principle to measure mass flow rate, by placing a heated object in the midst
of a fluid flowstream, and measuring how much heat the flowing fluid convects away from the heated
object. The “wind chill” experienced by that heated object is a function of true mass flow rate (and
not just volumetric flow rate) because the mechanism of heat loss is the rate at which fluid molecules
contact the heated object, with each of those molecules having a definite mass