Tests of Newtonian Gravitation

这项研究计划包括牛顿定律的测试 在实验室距离尺度上的重力，寻找新的 中等规模部队的兵力水平低于 目前可检测的，和测试的等效性原则 这是广义相对论的基础。 尔湾 团体计划： （1.） 他们最近进行的一次改进版的 实验的组成依赖在明显的 作用在铅和铜试验质量上的重力 这是由于局部铅吸引质量。 他们期望 将这些力与千万分之几的力进行比较。 （2.） 可旋转扭力天平的结构和操作， 最初将在实验室中用于测试等效性 使用地球和太阳作为加速源的原理，以及 后来，在一个具有低微震背景的山区场地， 改进的等效原理测试和超高 成分相关力的灵敏度搜索。 （3.） 一 的平方反比距离依赖性的检验 重力从2mm到2cm。 这些实验将提供高精度的基础 我们对引力的认识。

This research program includes tests of the Newtonian law of gravity on a laboratory distance scale, searches for new intermediate range forces at strength levels below those currently detectable, and tests of the equivalence principle which underlies the theory of general relativity. The Irvine group plans: (1.) An improved version of their recently conducted experiment for a composition dependence in the apparent gravitational force acting on lead and copper test masses due to a local lead attracting mass. They expect to compare these forces to a few parts in 10 million. (2.) Construction and operation of a rotatable torsion balance, which will be used initially in the laboratory to test the equivalence principle using the earth and sun as acceleration sources, and later at a mountain site with low microseismic background for an improved equivalence principle test and for an ultra high sensitivity search for composition dependent forces. (3.) A test of the inverse square distance dependence of the gravitational force from 2mm to 2 cm. These experiments will provide a high-precision foundation for our knowledge of the gravitational force.