| 单词 | torsion-balance |
| 释义 | > as lemmastorsion-balance torsion-balance n. an instrument for measuring minute horizontal forces, consisting of a wire or filament having a horizontal arm to the end of which the force is applied so as to make it revolve and twist the wire, etc., through an angle proportional to the twisting moment of the force. ΘΚΠ the world > matter > physics > mechanics > force > [noun] > twisting or rotary > instrument measuring torsion-balance1837 1837 D. Brewster Treat. Magnetism 15 The torsion balance, for measuring small forces. 1873 J. C. Maxwell Treat. Electr. & Magn. §38 The torsion-balance was devised by Michell for the determination of the force of gravitation between small bodies, and was used by Cavendish for this purpose. < as lemmas |
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