radioactive

A male scientist weighs a small sample, then puts the sample in a small…

A man empties the contents of the mixed barrel into plant pots. In a…

The male scientist continues to experiment with different liquids. Text…

Medium shot of robotic view finder. Over the shoulder shot of a man at…

Shots of a scientist using Geiger Counter. MS of man using grinding…

Testing radioactive substances. A row of men each welding. Men and…

Ohio. Radioactive teeth studied to prevent tooth decay. Lab setting,…

Associate Scientific Director Dr. Eugene Cooper explains scientific…

Scientist explains equipment used to study physical properties of…

Television host Bob Day interviews Dr. Paul C Tompkins, the Laboratory…

Television host Bob Day interviews Dr. Paul C Tompkins, the Laboratory…

Scientist explains recording of thermal radiation on paper. Television…