Necessity
Some implications of the displacement current follow, which agree with experimental observation, and with the requirements of logical consistency for the theory of electromagnetism.
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Famous quotes containing the word necessity:
“If necessity is the mother of invention, then resourcefulness is the father.”
—Beulah Louise Henry, U.S. inventor. As quoted in Feminine Ingenuity, ch. 13, by Anne L. MacDonald (1992)
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