December 16th |
1929 | Johann W. Ritter, who discovered ultra-violet rays, collected oxygen and hydrogen by electrolysis, made the first dry cell battery, made a storage battery and established connection between galvanism and chemical reactivity, was born. |
1929 | Bruce N. Ames, who developed the Ames Test, an indicator of carcinogenicity of chemicals that measures the rate of mutation by a chemical in bacteria, was born. |