单词 | torsion balance |
例句 | In Cavendish’s work, the torsion balance consisted of a dumb-bell that was suspended from its centre by a thin fibre. Gravity measured with record precision 2018-08-28T04:00:00Z To do so, he used a piece of apparatus called a torsion balance. Searching for particles on a benchtop 2017-01-26T05:00:00Z Cavendish demonstrated this using a torsion balance, a horizontally suspended wooden rod with a small lead sphere at each end. How Henry Cavendish Used a Wire to Measure a Tiny Force of Gravity 2015-02-09T05:00:00Z The oldest, and still most common, method measures the tiny rotation of a torsion balance — a rod hanging on a wire — caused by the attraction between masses at either end of the rod. Gravity rivals join forces to nail down Big G 2014-10-07T04:00:00Z In 1785 Coulomb constructed his torsion balance, by which he was enabled to measure the repulsion of electrified bodies. Popular scientific lectures 2012-04-24T02:00:17.273Z By contrast, in the AAF method, two turntables are used to rotate the torsion balance and the external masses individually. Gravity measured with record precision 2018-08-28T04:00:00Z Quartz fibres have two great advantages over other forms of suspension when employed for any kind of torsion balance, from an ordinary more or less "astatic" galvanometer to the Cavendish apparatus. On Laboratory Arts It is known that Cavendish was the first who succeeded by means of the torsion balance in effecting fairly precise measurements. The New Physics and Its Evolution Electrometer.—The measuring instrument I have employed has been the torsion balance electrometer of Coulomb, constructed, generally, according to his directions235, but with certain variations and additions, which I will briefly describe. Experimental Researches in Electricity, Volume 1 Cavendish, use of the torsion balance to determine the mean density of the Earth, 170. COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 G is determined from the angular acceleration of the turntable associated with the torsion balance when the amount of twisting of the fibre is reduced to zero. Gravity measured with record precision 2018-08-28T04:00:00Z On the contrary, the torsion balance seems very much alive. Scientific American Supplement, No. 601, July 9, 1887 He took two equal weights of a salt of radium and a salt of barium, which he made oscillate one after the other in a torsion balance. The New Physics and Its Evolution Coulomb was the maker of the first instrument for measuring a current, which was known as the torsion balance. Steam, Steel and Electricity Reich, mean density of the earth, as ascertained by the torsion balance, 170; temperature of the mines in Saxony, 174. COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 The amount of charge in each jar was determined by bringing a proof-plane into contact with its knob and measuring by a torsion balance the charge taken away. Faraday as a Discoverer It is applied in those varieties of the torsion balance in which there are two parallel beams, connected by either four or six wires. Scientific American Supplement, No. 601, July 9, 1887 |
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