Edgerton, Harold Eugene. (1903–1990) "Stroboscopes and Loch Ness Monsters" – Signed Lecture AnnouncementSigned announcement from the Optical Society of America for a talk given by "Doc" Edgerton, also known as Poppa Flash, on the topic of strobes and pulse circuits, dated 1977. Toning and pen mark to lower left, else fine. 8. 5 x 11 inches (21. 6 x 28 cm.). A professor of electrical engineering at MIT, Harold Eugene Edgerton is credited with the popularization of the stroboscope, turning an obscure laboratory instrument into a common feature of high