Abstract
A very considerable amount of careful work has been devoted to the investigation of the phenomenon, first noticed by Budde (1), that when light falls on chlorine an immediate expansion takes place, followed by an equally rapid contraction to the same, or very nearly the same, volume when the light is obscured. Light in the visible region is effective, but the shorter the wave-length the greater was found to be the expansion; the infra-red had no effect; the ultra-violet has not been carefully explored. The temperature of the gas rises during the expansion and corresponds to the increase in the volume (2). However, Baker (3), and also Shenstone (4), and Pringsheim (5), found that very pure dry chlorine did not give the effect at all.
Publisher
Cambridge University Press (CUP)
Subject
General Medicine,General Chemistry