A free-fall determination of the Newtonian constant of gravity
Science, ISSN: 0036-8075, Vol: 282, Issue: 5397, Page: 2230-2234
1998
- 63Citations
- 37Captures
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Metrics Details
- Citations63
- Citation Indexes63
- 63
- CrossRef57
- Captures37
- Readers37
- 37
Article Description
Recent determinations of the Newtonian constant of gravity have produced values that differ by nearly 40 times their individual error estimates (more than 0.5%). In an attempt to help resolve this situation, an experiment that uses the gravity field of a one-half metric ton source mass to perturb the trajectory of a free-falling mass and laser interferometry to track the falling object was performed. This experiment does not suspend the test mass from a support system. It is therefore free of many systematic errors associated with supports. The measured value was G = (6.6873 ± 0.0094) x 10 m kg sec.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0032545397&origin=inward; http://dx.doi.org/10.1126/science.282.5397.2230; http://www.ncbi.nlm.nih.gov/pubmed/9856940; https://www.science.org/doi/10.1126/science.282.5397.2230; https://dx.doi.org/10.1126/science.282.5397.2230; https://science.sciencemag.org/content/282/5397/2230
American Association for the Advancement of Science (AAAS)
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