The Fires and The Weather

Abstract

A more accurate tneasure mcnt was made wit!dn the closed g1 a. <;5 lJellJur in which a polymcte r ::tnd a thermomet er were placed Leside an ir1cem;e st ick and in which t he relative bum idity in t he jar could be regul ated }}y means of sul phuric acid. T he result was as follows ; Humidi ty Length Tempet:l.ture ]3% 24" 75 em 30°C 92% 25.05 em 30°C So the contraction b ecame ] .2 % (i. C. 0. 15 % per 10 % of humidity)