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Late 19th or early 20th century. This galvanometer was used at the transatlantic cable station, Halifax, NS, Canada Modern mirror galvanometer from Scanlab. A mirror galvanometer is an ammeter that indicates it has sensed an electric current by deflecting a light beam with a mirror. The beam of light projected on a scale acts as a long massless ...
The disadvantage of the mirror galvanometer was that it required two operators, one with a steady eye to read and call off the signal, the other to write down the characters received. [3] Its use spread to ordinary telegraph lines and radiotelegraphy radio receivers. A major advantage of the syphon recorder was that no operator has to monitor ...
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A man having his hair cut leapt out of the barber's chair and ran to help a police officer who was being wrestled to the ground in a headlock. Kyle Whiting was having a trim at Heron Barbers in ...
The U.S. military took custody of American Travis Pete Timmerman and flew him from Syria to Jordan on Friday, a U.S. official told ABC News. "Following the fall of the Assad regime, Travis ...
youtube-dl is a free and open source software tool for downloading video and audio from YouTube [3] and over 1,000 other video hosting websites. [4] It is released under the Unlicense software license. [5] As of September 2021, youtube-dl is one of the most starred projects on GitHub, with over 100,000 stars. [6]
At a campaign event in Winston-Salem on the eve of the 1976 North Carolina Democratic primary, a voter asked then-candidate Jimmy Carter whether he was a “born again” Christian.
Thomson's tide-predicting machine. Thomson was an enthusiastic yachtsman, his interest in all things relating to the sea perhaps arising from, or fostered by, his experiences on the Agamemnon and the Great Eastern. Thomson introduced a new method of deep-sea depth sounding, in which a steel piano wire replaces the ordinary hand line. The wire ...