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HENRY (UNIT)


In physics, and electronics, the Henry (symbol H) is the SI unit of inductance. It is named after Joseph Henry (1797–1878), the American scientist who discovered electromagnetic induction independently of and at about the same time as Michael Faraday (1791–1867) in England. The magnetic permeability of the vacuum is 4π×10−7 H/m (henry per meter).

Well into the nineteenth century American science existed, where it existed at all, either as a genteel pastime or as an adjunct to the urgent needs of the new nation—agriculture, navigation, exploration. The best research was usually done in fields serving these practical interests, and the closest approach to physics was work in positional astronomy, meteorology, geology and the like. Joseph Henry arose from this tradition and quickly surpassed it.

Online Unit Converter. Various henry conversion for your use.

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