No abstract

Certain provisional values of the refractive index of normal water are given to accompany similar values determined at 25 C by the minimum-deviation method for a sample of heavy water (sp gr= 1.001376 at 25 C) using several wave lengths of the visible spectrum. According to the linear or additive relation for simple mixtures, which was found adequate in Luten's investigation, the differences in index between H 2 and H 2 2 are calculated and compared with previously published values.