| 11. | This is achieved by using a sensitive galvanometer in series with a high resistance.
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| 12. | In 1826, Johann Christian Poggendorff developed the mirror galvanometer for detecting electric currents.
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| 13. | They indicate the exposure either with a needle galvanometer or on an LCD screen.
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| 14. | In 1825 he invented a differential galvanometer for the accurate measurement of electrical resistance.
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| 15. | Other early pioneers employed rotating mirrors, or vibrating mirrors known as mirror galvanometers.
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| 16. | In 1820 he built the first sensitive galvanometer, naming it after Luigi Galvani.
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| 17. | The currents were measured by a sensitive galvanometer.
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| 18. | The ideal galvanometer has no / little resistance so surely a huge current flows?
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| 19. | Sensitive galvanometers have been essential for the development of science and technology in many fields.
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| 20. | Kelvin invented his mirror galvanometer precisely for this task of observing the current change quickly.
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