扭秤

利用精密扭秤测量铜与磁场的相互作用

Measuremnt of interaction between copper and magnetic field by precision torsion balance

论扭秤的发明应用对物理学发展的贡献

On the Contribution to Physical Development by the Invention and Application of Torsion Balance

本文围绕周期法测G这一主题，分析了温度，非均匀引力场，以及静电对扭秤周期稳定性的影响；

The disturbance such as temperature , nonlinear gravitational field and static electronic field has been studied .

扭秤极板是由硅V型槽结构和玻璃基底组成，因此本文主要研究了硅V型槽刻蚀工艺和硅玻璃键合工艺，并对相关工艺参数进行了测量和分析。

As the plate is made up of silicon V-groove structure and glass substrate , the processes of silicon V-groove etching and silicon-glass bonding were investigated .

为了提高测G的精度，应尽可能从实验数据中高精度地确定扭秤运动的周期。

In order to improve the precision of G , the period of a torsion pendulum should be measured with precision as high as possible from the experimental data .

高精度的G值大都采用扭秤周期法测得，其精度主要依赖于扭秤周期的精度。

3 , High precision value of G could be measured by means of the swing time method of the torsion pendulum , where the precision of G is mainly dependent on the precise of the period of a torsion pendulum .

扭秤弱等效原理实验中的引力梯度效应研究

Research on the Gravity Gradient in the Weak Equivalence Principle Based on the Torsion Pendulum

用自旋极化扭秤探测自旋与质量相互作用

Survey of spin-mass interaction by spin-polarized pendulum

地面旋转扭秤法和地月测距方法在10-13精度内验证弱等效原理依然成立。

Current weak EP test comes to10-13 by the rotating torsion balance and Lunar laser ranging methods .

m，这一大小对宏观旋转物体等效原理检验扭秤方案的预期精度给出了严格限制。

A restrict limitation for expected precision of equivalence principle test of extended rotating bodies with a torsion balance was set .

运用相关法，我们成功地解决了扭秤周期的高精度的确定问题。

We have settled down the trouble problem which is precise determination of period of a torsion pendulum by correlation method .

本文简要阐述等效原理的研究背景，通过对自由落体法和扭秤法检验等效原理的详细介绍来具体讨论等效原理的实验检验。

It is significant for equivalence principle test for extended rotating bodies with a torsion balance to measure the internal friction torque of a gyroscope .

经过理论分析，采用增强扭秤检验系统和周围引力场的对称性的方法可以减小和降低引力梯度效应对实验的影响。

When we buildup the symmetry of measurement system and gravitational field around , the effect due to the gravitational gradient can be reduced much .

根据库仑扭秤实验的原理提出了一个非线性动力系统模型，分析了其稳定性及其周期运动。

A model of a nonlinear-dynamic system is established based on the principle of Coulomb torsion balance . Stability of this model is discussed and the solution for periodic motion is obtained .

然而，高精度地确定扭秤的运动周期是一项非常困难的工作，因为扭秤的运动易受外界噪声的干扰。

However , it is very difficult to acquire a precise measurement of the period of a torsion pendulum because the motion of the torsion pendulum is strongly influenced by various external disturbances .

我们对扭秤的运动特性进行了深入的研究，讨论了扭秤对外界冲击的响应和扭秤的运动周期是如何改变的。

We have studied the character of the motion of the torsion pendulum , and discussed how torsion pendulum responds to external shock and how the period of the torsion pendulum is changed .

扭秤测量精度较高，仪器性能稳定，两秤臂的一致性好，它对唐山地震前观测到的重力异常是一个很好的旁证和补充。

It is a very good collateral evidence for the anomaly of gravity because the torsion balance is an instrument with higher precision of measurement , stability preformance and identity of two balance arms .

剩余自旋来自自旋极化质量和外部屏蔽材料，其等效自旋电子数约为1.512×1023。这种扭秤设计的优点是自旋电子数多，宏观检测效应大，但困难在于对自旋极化质量进行彻底的磁屏蔽。

The equivalent number of spin-polarized electrons is about 1.5 × 1023 . The advantage of this kind of torsion balance is getting more spin-polarized electrons , but it is difficult to be shielded well .