Fahrenheit Scale

Abstract: short articles, in Latin, dated 1724, and published in the Philosophical Transactions of London (i). In the first article he gives the boiling points and specific gravities of five liquids ; he says that water boils at 2120. Reference to his thermometers is made in the following passage: I. c( Moreover, the above experiments have not been made at the same time, hence the liquids would have been subject to different degrees of heat; as, however, the (specific) gravity varies in a different manner and unequally, I calculate their gravity at 48 degrees (a place which on my thermometer is exactly half way between the lowest point of severest cold (intensissimi frigoris) as obtained by mixing water, ice, sal ammoniac or sea-salt, and the degree of heat found in the blood of a healthy person). ? In his second paper FAHRENHEIT says: II. c I manufacture two kinds of thermometers, the one kind is filled with spirit of wine, the other with mercury. Their length varies according to the use to which they are put. But all have this in common, that they agree in the number of degrees and vary between fixed limits. The scale of the thermometers serving merely meteorological purposes, begins with 00 and stops at 960. This scale rests upon the