Elster and Geitel Demonstrate Radioactivity in Rocks, Springs, and Air

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Article abstract: Elster and Geitel pioneered research in ion conduction in gases, atmospheric electricity photoelectric effects, and radioactivity.

Summary of Event

The late 1890’s and early 1900’s were a fertile period for discoveries in radioactivity, which is the emission of energetic particles and radiant energy by certain atomic nuclei. These early discoveries were the building blocks for nuclear physics and the nuclear age, which followed in the mid-1940’s.

Radioactivity was first observed in 1896 by the French physicist Antoine-Henri...

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