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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 ...
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 ...
In 1837 Carl Friedrich Gauss and Weber (both noted workers of this period) jointly invented a reflecting galvanometer for telegraph purposes. This was the forerunner of the Thomson reflecting and other exceedingly sensitive galvanometers once used in submarine signaling and still widely employed in electrical measurements.
The NFL playoffs are set with a 14-team field, including four new teams compared to last season. The Minnesota Vikings, Washington Commanders, Los Angeles Chargers, and Denver Broncos are back in ...
Prince William is celebrating his love and admiration for Kate Middleton as she marks her 43rd birthday.. In a message posted to the couple's social media, William, 42, paid tribute to Kate after ...
Food & Wine / Getty Images. A cheeky little slice of cake here, a cookie there, or a nibble of chocolate every once in a while isn't the worst thing in the world. But according to new research ...
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