15:36 Oct 14, 2020 |
English to Polish translations [PRO] Telecom(munications) | |||||||
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2 | mosiężny aparat telegraficzny odbiorczy |
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Discussion entries: 1 | |
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mosiężny aparat telegraficzny odbiorczy Explanation: mosiężny aparat telegraficzny odbiorczy --- Description (Brief) Telegraph sounders convert electrical pulses into audible sounds and are used to receive Morse code messages. The message travels as a series of electrical pulses through a wire. Short pulses make a dot, slightly longer pulses make a dash. The sequence of dots and dashes represent letters and numbers. The pulses energize the sounder’s electromagnets which move a lever-arm. The arm makes a loud “click” when it strikes a crossbar and the operator translates the pattern of sounds into the original language. This sounder from Manhattan Electric Supply Company is rated at 150 Ohms resistance. That indicates the unit was intended for so-called "mainline" service over long distances. ... Physical Description wood (overall material) brass (overall material) rubber (overall material) https://www.si.edu/es/object/nmah_1367303 |
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