File:1940 X Ray Physics Documentary By William D Coolidge.webm
1940_X_Ray_Physics_Documentary_By_William_D_Coolidge.webm (WebM audio/video file, VP9/Opus, length 8 min 45 s, 640 × 480 pixels, 378 kbps overall, file size: 23.7 MB)
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Summary
[edit]Description1940 X Ray Physics Documentary By William D Coolidge.webm |
English: 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. |
Date | |
Source | YouTube: 1940 X Ray Physics Documentary By William D Coolidge – View/save archived versions on archive.org and archive.today |
Author | 2thepast |
Licensing
[edit]Public domainPublic domainfalsefalse |
This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties. العربية ∙ Deutsch ∙ English ∙ español ∙ français ∙ galego ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ português ∙ português do Brasil ∙ русский ∙ sicilianu ∙ slovenščina ∙ українська ∙ 简体中文 ∙ 繁體中文 ∙ +/− |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:25, 2 June 2023 | 8 min 45 s, 640 × 480 (23.7 MB) | Shubjt (talk | contribs) | Imported media from https://www.youtube.com/watch?v=I3s5HFQ2YME |
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