Wax melts quickly when cathode rays are focussed on it, showing cathode rays generate intense heat when focussed at a point.
Wax melts quickly when cathode rays are focussed on it, showing cathode rays generate intense heat when focussed at a point.
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Wax melts quickly when cathode rays are focussed on it, showing cathode rays generate intense heat when focussed at a point.