1 янв 1899 г. - Rutherford conducts the Gold Foil Experiment (discovers radioactivity)

Описание:

A narrow beam of alpha particles was aimed at a thin sheet of gold foil surrounded by a zinc sulfide coated screen to protect a flash of light when the alpha particles struck. They then noted where the flashes occured to determine if the atoms within the gold foil deflected the alpha particles.

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