Definition & Betydning | engelsk ord GALVANOMETER

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Definitioner af GALVANOMETER

1. galvanometer

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Eksempler på brug af GALVANOMETER i en sætning

• Analog voltmeters move a pointer across a scale in proportion to the voltage measured and can be built from a galvanometer and series resistor.
• These were similar to the galvanometer type movement encountered in later instruments, but instead of hairsprings to supply a restoring force they used conducting 'ligaments'.
• A mirror galvanometer is an ammeter that indicates it has sensed an electric current by deflecting a light beam with a mirror.
• The beam is deflected a certain amount which correlates to the amount of voltage applied to the galvanometer scanner.
• Jacques-Arsène d'Arsonval (8 June 1851 – 31 December 1940) was a French physician, physicist and inventor of the moving-coil D'Arsonval galvanometer and the thermocouple ammeter.
• Melloni's reputation as a physicist rests principally on his discoveries in radiant heat, made with the aid of the thermomultiplier, a combination of thermopile and galvanometer.
• This changed when he partnered with Charles Wheatstone and the telegraph they then built together was a multiple-needle telegraph, but with a rather more robust mounting based on the galvanometer of Macedonio Melloni.
• The galvanometer usually only measures the first term in the EMF which contributes the current in circuit, although sometimes it can measure the incorporation of the second term such as when the second term contributes part of the current which the galvanometer measures as motional EMF, e.
• By 1945, the IR-2 spectrophotometer was in production, using an electronic vacuum tube amplifier instead of a galvanometer, and a thermocouple tube for the detection of infrared light.
• In addition to its main use in crystal radios, crystal detectors were also used as radio wave detectors in scientific experiments, in which the DC output current of the detector was registered by a sensitive galvanometer, and in test instruments such as wavemeters used to calibrate the frequency of radio transmitters.
• Einthoven used these measuring points, by immersing the hands and feet in pails of salt water, as the contacts for his string galvanometer, the first practical ECG machine.
• The tests involved connecting plants to a polygraph galvanometer and employing actual and imagined harm upon the plants or upon others in the plants' vicinity.
• A bare-bones computing model was marketed in the form of a basic analog computer, consisting of three calibrated potentiometers and a low-cost galvanometer arranged in a Wheatstone bridge circuit.
• Jacques-Arsène d'Arsonval (8 June 1851 – 31 December 1940): French physician and physicist, born in Château de la Borie, in La Porcherie; inventor of the moving-coil D'Arsonval galvanometer and the thermocouple ammeter.
• When measuring an unknown voltage and the galvanometer reads zero, no current is drawn from the unknown voltage and so the reading is independent of the source's internal resistance, as if by a voltmeter of infinite resistance.
• The term "oscillograph" was coined by André Blondel in 1893 to refer to his instrument based on the earlier-known mirror galvanometer but adapted to recording high-frequency oscillations.
• Synonyms for this device include galvanoscopic frog, frog's leg galvanoscope, frog galvanometer, rheoscopic frog, and frog electroscope.
• Inventions included folding tables, the Sussex trug, lacquer covered wire from OKI, and Philip Cardew won a gold medal for his hot-wire galvanometer, or voltmeter.
• In that year he communicated an experiment in bioelectricity: by making a wound in a finger and inserting the electrode of a galvanometer, while placing the other electrode in contact with an unwounded finger, a current was observed to flow.
• Jacques-Arsène d'Arsonval, physician, physicist, and inventor of the moving-coil D'Arsonval galvanometer and the thermocouple ammeter.

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