Used to demonstrate cathode rays. The tube is evacuated of air and when the voltage is applied electrons (cathode rays) hit the paddle and the heat makes it move from one end of the tube to the other. Invented by Sir William Crookes in circa 1875
Added:
8th Jul 2009
Subjects:
Design and Technology, History, ICT, Science
Key Stages:
Foundation, Key Stage 1, Key Stage 2, Key Stage 3, Key Stage 4, Key Stage 4+
Keywords:
science, history, cathode ray, electronics
Related Links:
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