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单词 magnetic reluctance
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magnetic reluctance
5. The property of a magnetic circuit or object of opposing the passage of magnetic flux lines; a measure of this, equal to the ratio of the magnetomotive force to the magnetic flux. Also magnetic reluctance.Reluctance is the analogue of resistance in an electric circuit; its reciprocal is permeance. The SI unit of reluctance is the reciprocal henry.
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the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > electromagnetic induction > [noun] > resistance to conduction
resistivity1885
reluctance1888
reluctancy1888
resistance1888
reluctivity1892
the world > matter > physics > electromagnetic radiation > magnetism > [noun] > magnetic field > lines of magnetic force > opposition to passage of
reluctance1888
reluctancy1888
magnetic viscosity1892
reluctivity1892
1888 O. Heaviside in Electrician 11 May 27/1 I would suggest that what is now called magnetic resistance be called the magnetic reluctance; and per unit volumes the reluctancy.
1893 A. E. Kennelly Electro-Dyn. Machinery I. iii. 25 Reluctance is thus the analogue, in the magnetic circuit, of resistance in the galvanic.
1936 R. S. Glasgow Princ. Radio Engin. iii. 68 The reluctance of the magnetic circuit is increased by the insertion of a small air gap.
1977 Gramophone Aug. 366/1 The moving-iron (variable reluctance) principle is used with a larger than usual fixed magnet.
1983 D. M. Berger in P. A. Schweitzer Corrosion & Corrosion Protection Handbk. viii. 411 The Elcometer thickness gage..utilizes a magnetic reluctance technique.
2002 M. H. Tooley Electronic Circuits (ed. 2) i. 13 The reluctance of a magnetic path is directly proportional to its length.
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