"Degree Fahrenheit" Quotes from Famous Books
 ... mechanical equivalent of heat, in British units, was the energy necessary to raise the temperature of one pound of water from 32 deg. F. to 33 deg. F., but Rankine defines it as the heat necessary to increase the temperature of one pound of water one degree Fahrenheit from that of maximum density, or from 39 deg. F. to 40 deg. F. For ordinary practice it is immaterial which of these definitions is used, for the errors resulting therefrom are much less than those resulting from ordinary observations. But when the value is to be determined by ...
— Scientific American Supplement, No. 647, May 26, 1888 • Various |
