1940 X Ray Physics Documentary By William D Coolidge
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Video source record: https://commons.wikimedia.org/wiki/File:1940%20X%20Ray%20Physics%20Documentary%20By%20William%20D%20Coolidge.webm
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Summary
| Description | 1940 and X Rays were already in widespread medical and industrial use. This short documentary is presented by one of the inventors of the hot cathode X-Ray tube, William D Coolidge. |
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| Date | 2008-01-02 |
| Source | commons.wikimedia.org |
| Author | 2thepast |
