Has anybody looked into whether or not altitude has a significant impact on the heat dissipation abilities of air cooling techniques? For example, the air density at sea level is 1.2286 kg/m^3, while ...

IN NATURE of May 13 (p. 308) Dr. Hill states that “no volatile body, the density of which is not greater than that of air, is a stimulant of our olfactory membrane.” I venture to suggest some ...