becquerel rays In A Sentence
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- In 1896, Henri becquerel found that rays emanating from certain minerals penetrated black paper and caused fogging of an unexposed photographic plate.
- At the end of the year 1897, Marie Curie started her work on uranic rays discovered by becquerel one year earlier.
- Alpha, beta and gamma rays were identified by becquerel in 1896.
- Henri becquerel himself proved that beta rays are fast electrons, while Rutherford and Thomas Royds proved in 1909 that alpha particles are ionized helium.
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