How can you know that anode …
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Gaurav Seth 5 years, 4 months ago
William Crookes in 1879 demonstrated that cathode rays travel in straight lines. He placed an opaque object like metal cross in the path of cathode rays in a discharge tube. It was observed that a sharp shadow of the cross was cast on the glass behind the cross. A shadow of metal cross under the circumstances can be formed only if cathode rays travel in straight lines and cannot bend round the corners of the metal cross.
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