Henri Becquerel’s Discovery of the Glow of Radioactive Materials

Henri-Becquerel

In 1896 French scientist Henri Becquerel was working with radioactive substances and found that under ultraviolet light, these elements began to glow. Becquerel left radioactive uranium salts overnight on a photographic plate which had never been exposed to light. The next day a dark shadow emerged which Becquerel realized was the markings of energy, radioactive energy and therefore discovered radioactivity

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