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Creation Date

1940

Description

Lauritsen electroscope, accession no. 41; circa 1940

This instrument was used by Dr. Fritz Lipmann. When charged with static electricity, the arms (vanes) opened. The speed with which the arms closed when radioactive phosphorus was brought near related to the amount of radioactivity in the sample. At present beta radiation and gamma radiation are measured routinely by sophisticated instrumentation and print-outs.

Photo by Lubosh Stepanek

Keywords

electroscope, Fritz Lipmann

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