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What role did photographic plates play in the discovery of radioactivity?

Sagot :

Answer:

When Henri Becquerel investigated the newly discovered X-rays in 1896, it led to studies of how uranium salts are affected by light. By accident, he discovered that uranium salts spontaneously emit a penetrating radiation that can be registered on a photographic plate.

Explanation: Please mark me brainliest :)

Henry because yeah.....