Crooke's Electron Demo Tube

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An early (1900's) electron demostration tube.  High voltage is applied to the top and bottom contacts.  This type of tube lead to the development of X-rays.  This tube is photographed with x-rays.
An early (1900's) electron demostration tube. High voltage is applied to the top and bottom contacts. This type of tube lead to the development of X-rays. This tube is photographed with x-rays.
Filename: crooks-neg.jpg
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