21 dic 1898 año - Marie and Pierre Curie
Descripción:
Marie and Pierre Curie discoed radium on this day. Later they named this phenomenon radioactivity, found how to measure it, separated the ways into alpha, beta and gamma radiation, and found other elements thorium, polonium and radium.
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fecha:
21 dic 1898 año
Ahora mismo
~ 126 years ago
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