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The Cavendish experiment, performed in 1797–1798 by English scientist Henry Cavendish, ... which differs by only 1% from the 2014 CODATA value of 6.67408 ...
Most modern measurements are repetitions of the Cavendish experiment, with results (within standard uncertainty) ranging between 6.672 and 6.676 × 10 −11 m 3 /kg/s 2 (relative uncertainty 3 × 10 −4) in results reported since the 1980s, although the 2014 CODATA recommended value is close to 6.674 × 10 −11 m 3 /kg/s 2 with a relative ...
Cavendish's experiment proved to result in more reliable measurements than pendulum experiments of the "Schiehallion" (deflection) type or "Peruvian" (period as a function of altitude) type. Pendulum experiments still continued to be performed, by Robert von Sterneck (1883, results between 5.0 and 6.3 g/cm 3 ) and Thomas Corwin Mendenhall (1880 ...
Pictet's experiment: Marc-Auguste Pictet: Demonstration Thermal radiation: 1797 Cavendish experiment: Henry Cavendish: Measurement Gravitational constant: 1799 Voltaic pile: Alessandro Volta: Demonstration First electric battery: 1803 Young's interference experiment: Thomas Young: Confirmation Wave theory of light: 1819 Arago spot experiment ...
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]
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.
Figure 5–9. (A) Cavendish experiment, (B) Kreuzer experiment. The classic experiment to measure the strength of a gravitational source (i.e. its active mass) was first conducted in 1797 by Henry Cavendish (Fig. 5-9a). Two small but dense balls are suspended on a fine wire, making a torsion balance. Bringing two large test masses close to the ...
Well, the Cavendish experiment is well known; and you can, using simple Newtonian physics equations, estimate what the force should be and decide if the magnitude of errors introduced by, say, turbulent air currents or electric forces are relevant. You can also eliminate (or at least, reduce) electrostatic effects by grounding all involved ...