Measurement of Newton’s gravitational constant

摘要: A precision measurement of the gravitational constant $G$ has been made using a beam balance. Special attention given to determining calibration, effect possible nonlinearity balance and zero-point variation The equipment, measurements, analysis are described in detail. value obtained for is $6.674\text{ }252(109)(54)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}11}\text{ }\text{ }{\mathrm{m}}^{3}\text{ }{\mathrm{kg}}^{\ensuremath{-}1}\text{ }{\mathrm{s}}^{\ensuremath{-}2}$. relative statistical systematic uncertainties this result $16.3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ $8.1\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$, respectively.