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16 August 2017 A modified rotating liquid optics method to measure the gravity acceleration
Peng Song, Si Wu, Meng Zhao, Dongli Zhang
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Proceedings Volume 10452, 14th Conference on Education and Training in Optics and Photonics: ETOP 2017; 104524P (2017) https://doi.org/10.1117/12.2269047
Event: 14th Conference on Education and Training in Optics and Photonics, ETOP 2017, 2017, Hangzhou, China
Abstract
The gravity acceleration is an important physics constant, which is measured by the rotating liquid as a university physical experiment. However, the present experimental methods have a bigger amount of experimental error. A modified rotating liquid optics method is presented to measure the gravity acceleration, in which an angle measurement instrument with an accuracy of 0.05 degree is introduced. Laser is used to measure the angles of the highest point and the lowest point of the rotating liquid. Then the gravity acceleration can be calculated. The modified method has more little error and makes the experiment easier and more convenient.
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Peng Song, Si Wu, Meng Zhao, and Dongli Zhang "A modified rotating liquid optics method to measure the gravity acceleration", Proc. SPIE 10452, 14th Conference on Education and Training in Optics and Photonics: ETOP 2017, 104524P (16 August 2017); https://doi.org/10.1117/12.2269047
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KEYWORDS
Liquids
Optical testing
Physics
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