{"id":23317,"date":"2022-05-28T01:03:39","date_gmt":"2022-05-28T05:03:39","guid":{"rendered":"https:\/\/phsc.ca\/camera\/?p=23317"},"modified":"2022-05-27T23:24:05","modified_gmt":"2022-05-28T03:24:05","slug":"a-practical-use-of-edgertons-research","status":"publish","type":"post","link":"https:\/\/phsc.ca\/camera\/a-practical-use-of-edgertons-research\/","title":{"rendered":"a practical use of Edgerton&#8217;s research"},"content":{"rendered":"<div id=\"attachment_23318\" style=\"width: 235px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/phsc.ca\/camera\/wp-content\/uploads\/2022\/05\/High-speed-pix-Popular-Mechanics-July-1945-1.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-23318\" class=\"size-full wp-image-23318\" src=\"https:\/\/phsc.ca\/camera\/wp-content\/uploads\/2022\/05\/High-speed-pix-Popular-Mechanics-July-1945-1-sm.jpg\" alt=\"\" width=\"225\" height=\"154\" \/><\/a><p id=\"caption-attachment-23318\" class=\"wp-caption-text\">set-up used to record the passage of an armour piercing shell through steel plate<\/p><\/div>\n<p><strong>Toronto<\/strong>. The July, 1945 issue of Popular Mechanics has a brief article on using rapid fire flash tubes to record the passage of a .50 calibre bullet through armour plate. The experiment was performed by the ATSC of the American Military. The experiment made practical use of the &#8216;strobe&#8217; concepts arrived at by <a href=\"https:\/\/en.wikipedia.org\/wiki\/Doc_Edgerton\">Harold Edgerton<\/a> (M.I.T.) \u00a0just a few years earlier.<\/p>\n<p>Old timers may recall &#8216;pentode&#8217; tubes. These were vacuum tubes with three active grids between the cathode\/heater and the plate (hence the name pentode or five active elements).<\/p>\n<p>The last paragraph in the article refers to using high speed x-ray tubes developed by Westinghouse for a similar experiment.<\/p>\n<p>Thanks go to my good friend and fellow PHSC member, George Dunbar, for discovering this slice of photographic history and sharing it with us.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Toronto. The July, 1945 issue of Popular Mechanics has a brief article on using rapid fire flash tubes to record the passage of a .50 calibre bullet through armour plate. The experiment was performed by the ATSC of the American &hellip; <a href=\"https:\/\/phsc.ca\/camera\/a-practical-use-of-edgertons-research\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1944],"tags":[1228,613,938],"class_list":["post-23317","post","type-post","status-publish","format-standard","hentry","category-history","tag-experiment","tag-photo","tag-strobe"],"_links":{"self":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/23317","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/comments?post=23317"}],"version-history":[{"count":5,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/23317\/revisions"}],"predecessor-version":[{"id":23324,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/23317\/revisions\/23324"}],"wp:attachment":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/media?parent=23317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/categories?post=23317"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/tags?post=23317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}