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jan 25, 1896 - Henri Becquerel (1896) - While studying the effects of x rays on photographic film, he discovered some chemicals spontaneously decompose and give off very penetrating rays.

Added to timeline:

10 months ago
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193
Chem Project
Alyssa George, Riley Gloeckl, Grace Bair, Sonja Hebestreit

Date:

jan 25, 1896
Now
~ 122 years ago
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