RUI: Measuring Newtonian and Non-Newtonian Gravity on an Intermediate Distance Scale (Physics)

RUI：在中距离尺度上测量牛顿和非牛顿引力（物理）

• 批准号: 8813286
• 负责人: David Van Baak
• 金额: $ 4.24万
• 依托单位: Calvin University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-01-15 至 1991-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8813286&HistoricalAwards=false
• 关键词: RUI; Measuring; Newtonian; Non; Gravity

A direct measurement will be initiated for the Newtonian constant of gravitation, G, on a much larger distance scale than previously achieved. The method to be used is a precise measurement of changes in the local acceleration of gravity, g, at two locations in the vicinity of a large hydroelectric storage pond. A detailed study of the proposed site (the Ludington Pumped Storage Facility in Ludington, MI) and the proposed instrumentation (the portable absolute gravimeters developed at JILA) has shown that a measurement of G to a precision of 0.1%, on a distance scale of 10-100 m, is feasible. The result would be directly sensitive to a proposed "intermediate range force", and could confirm or negate some published claims for its strength and range. This project will involve undergraduate students in laboratory calculations and field measurements in a subject area which is both accessible to their understanding and of immediate interest to the physics community.

对牛顿引力常数G的直接测量将在比以前实现的大得多的距离尺度上开始。所使用的方法是在一个大型水力蓄水池附近的两个地点精确测量当地重力加速度g的变化。对拟建地点（位于密歇根州卢丁顿的卢丁顿抽水蓄能设施）和拟建仪器（JILA开发的便携式绝对重力仪）的详细研究表明，在10-100米的距离范围内，测量G的精度达到0.1%是可行的。结果将直接影响拟议的“中程部队”，并可能证实或否定某些已公布的关于其强度和射程的说法。本项目将涉及本科生在实验室计算和现场测量的一个学科领域，这既易于他们的理解，也直接感兴趣的物理界。