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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 pointer. In 1826, Johann Christian Poggendorff developed the mirror galvanometer for detecting electric currents. The apparatus is also known as a spot ...
In 1826, Poggendorff developed the mirror galvanometer, a device for detecting electric currents. He had an extraordinary memory, well stored with scientific knowledge, both modern and historical, a cool and impartial judgment, and a strong preference for facts as against theory of the speculative kind.
Galvanometer mechanisms were also used to get readings from photoresistors in the metering mechanisms of film cameras (as seen in the adjacent image). In analog strip chart recorders such as used in electrocardiographs , electroencephalographs and polygraphs , galvanometer mechanisms were used to position the pen .
Mirror galvanometer; S. String galvanometer; T. Tangent galvanometer; Thermo galvanometer; V. Vibration galvanometer This page was last edited on 1 September 2024 ...
The comments section is flooded with examples of bizarre (and equally hilarious) replacements made by male shoppers. "A man substituted my ground beef for a watermelon and I’m still confused ...
The mirror galvanometer proved yet another point of contention. Whitehouse wanted to work the cable with a very different scheme, [43] driving it with a massive high-voltage induction coil producing several thousand volts, so enough current would be available to drive standard electromechanical printing telegraphs used on inland telegraphs. [44]
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Agents on patrol discovered two backpacks stuffed with more than $1.1 million worth of cocaine in Washington state near the border with Canada, U.S. Customs and Border Protection said Monday.