Compressibility should have to be taken into account to predict wind force on buildings or to predict any other physical quantity that is a direct effect of wind.()
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An ideal fluid is usually defined as a fluid in which there is no friction.()
It is well known that a hot plate of metal will cool slower when placed in front of a fan than when exposed to still air.()
Convection is called forced convection if the fluid is forced to flow over the surface by external means such as a fan, pump, or the wind.()
Thermodynamic considerations show that an ideal thermal radiator, or blackbody, will emit energy at a rate proportional to the fifth power of the absolute temperature of the body and directly proportional to its surface area.()