Portrait of Dr. Harold Edgerton, 1983, by Yousuf Karsh

April 6th would be Dr. Harold Eugene Edgerton's birthday - he would have been 112 today! I figure we all know that as a professor of electrical engineering at the Massachusetts Institute of Technology, he pretty much invented the strobe. What I didn't know was, according to Wikipedia, "He also was deeply involved with the development of sonar and deep-sea photography, and his equipment was used by Jacques Cousteau in searches for shipwrecks and even the Loch Ness monster."