The story of electromagnetism in X ray.
Kemery
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D055590:Electromagnetic Phenomena / Q000266:history*; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D010678:Philately / Q000266:history*; D011871:Radiology / Q000266:history*; D014964:X-Ray Therapy / Q000266:history*