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The Cavendish experiment, performed in 1797–1798 by English scientist Henry Cavendish, was the first experiment to measure the force of gravity between masses in the laboratory [1] and the first to yield accurate values for the gravitational constant.
Based on this, Hutton's 1778 result is equivalent to G ≈ 8 × 10 −11 m 3 ⋅kg −1 ⋅s −2. Diagram of torsion balance used in the Cavendish experiment performed by Henry Cavendish in 1798, to measure G, with the help of a pulley, large balls hung from a frame were rotated into position next to the small balls.
Henry Cavendish was born on 10 October 1731 in Nice, where his family was living at the time. [2] His mother was Lady Anne de Grey, fourth daughter of Henry Grey, 1st Duke of Kent, and his father was Lord Charles Cavendish, the third son of William Cavendish, 2nd Duke of Devonshire. [2]
Cavendish's figure of 5,448 ± 33 kg·m −3 was only 1.2% from the currently accepted value of 5,515 kg·m −3, and his result would not be significantly improved upon until 1895 by Charles Boys. [c] The care with which Cavendish conducted the experiment and the accuracy of his result has led his name to since be associated with it. [21]
The value of the constant G was first accurately determined from the results of the Cavendish experiment conducted by the British scientist Henry Cavendish in 1798, although Cavendish did not himself calculate a numerical value for G. [5] This experiment was also the first test of Newton's theory of gravitation between masses in the laboratory.
Mark Cavendish made cycling history on Wednesday, winning a record-breaking 35th stage at the Tour de France. The 39-year-old has now surpassed legendary cyclist Eddy Merckx after winning a ...
Measure G would expand the L.A. County Board of Supervisors to nine members from its current five: from left, Janice Hahn, Hilda Solis, Lindsey Horvath, Kathryn Barger and Holly Mitchell.
2021 – Jun Ye and his team measure gravitational redshift with an accuracy of 7.6 × 10 −21 using an ultracold cloud of 100,000 strontium atoms in an optical lattice. [297] [298] 2021 – EHT measures the polarization of the ring of M87*, [299] and other properties of the magnetic field in its vicinity. [300]