Measurement of Gravitational Time Dilation: An Undergraduate Research Project
| Autor: | Jerry Sell, Patrick G. O'Shea, Samuel E. Huestis, M. Shane Burns, M. Alina Gearba, Jonathan Schiller, Robert Olesen, Jeffrey Steele, B. M. Patterson, Armand R. Dominguez, Michael D. Leveille, Brian B. Gebhard, Mario Serna |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Gravitational time dilation
General relativity Measure (physics) Physics - Physics Education FOS: Physical sciences General Physics and Astronomy Frequency standard Geodesy 01 natural sciences 010305 fluids & plasmas Undergraduate research Physics Education (physics.ed-ph) Assisted GPS 0103 physical sciences 010306 general physics Sea level Mathematics |
| Popis: | General relativity predicts that clocks run more slowly near massive objects. The effect is small---a clock at sea level lags behind one 1000 m above sea level by only 9.4 ns/day. Here, we demonstrate that a measurement of this effect can be done by undergraduate students. Our paper describes an experiment conducted by undergraduate researchers at Colorado College and the United States Air Force Academy to measure gravitational time dilation. The measurement was done by comparing the signals generated by a GPS frequency standard (sea-level time) to a Cs-beam frequency standard at seven different altitudes above sea level. We found that our measurements are consistent with the predictions of general relativity. |
| Databáze: | OpenAIRE |
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