Directory For a Sex Photos : engineeringhistory: William Coolidge holding an X-ray tube, circa 1920s. Coolidge was awarded the AIEE Edison Medal, the highest honor in electrical engineering at the time, in 1926 for for the origination of ductile tungsten and the fundamental improvem
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» engineeringhistory: William Coolidge holding an X-ray tube, circa 1920s. Coolidge was awarded the AIEE Edison Medal, the highest honor in electrical engineering at the time, in 1926 for for the origination of ductile tungsten and the fundamental improvem