Chemistry, 01.07.2021 15:30 nikolevargas89
Joseph has found that when he passes a high voltage current through an evacuated tube, he can make a phosphor coating on one end of the tube glow. One day he makes the that if a metal shape is put in the middle of the tube, it casts a shadow on the phosphor coating.
Answers: 2
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Joseph has found that when he passes a high voltage current through an evacuated tube, he can make a...
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