| Henri becquerel experiment | |
| Henri becquerel experiment radioactivity | On February 20th, Henri Bec querel placed a transparent crystal of the salt on a photographic plate wrapped inside two thick sheets of black paper, the whole set-up being exposed to . |
| Antoine henri becquerel experiment | Antoine Henri Becquerel was a French physicist who shared the Nobel Prize in Physics with Pierre and Marie Curie for his discovery of radioactivity. |
| Henri becquerel |
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