Cited by 804Relativity and Gravitational TheoryScientific Research and DiscoveriesQuantum and Classical Electrodynamics

Apparent Weight of Photons

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Pound, R. V., Rebka, G. A.·1960·Physical Review Letters

Abstract

As we proposed a few months ago, ' we have now measured the effect, originally hypothesized by Einstein, ' of gravitational potential on the ap- parent frequency of electromagnetic radiation by using the sharply defined energy of recoil-free y rays emitted and absorbed in solids, as dis-

Integrity signals

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Crossref · 10.1103/physrevlett.4.337

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  • The gravitational redshift was confirmed in a lab experiment by Pound, Rebka and Snider, verifying the general relativity prediction with a relative accuracy of 10% (and later <1%).

    “It is only in 1959 that the gravitational redshift is confirmed in a lab experiment by Pound, Rebka and Snider [1, 2, 3, 4]. Two gammaray emitting iron nuclei at different heights were compared, verifying GR prediction with a relative accuracy of 10% (and later < 1%).”

    From Chronometric Geodesy: Methods and Applications (2019) · cites this paper as [3]

  • Gravitational redshift was confirmed for the Earth's field by Pound and Rebka and has since been verified with increasing precision, including laboratory demonstrations using a height difference of about 33 cm between two optical clocks.

    “This gravitational redshift was confirmed for the Earth's field by Pound and Rebka [21]”

    From Chapter 1 Theoretical background (1996) · cites this paper as [21]

  • General relativity predicts that a clock's proper tick rate depends on the gravitational potential at its location; a clock deeper in a gravitational potential well ticks more slowly as observed from a clock higher up.

    “a clock held deeper in a gravitational potential well ticks more slowly, as observed from a clock held higher up”

    From Chapter 1 Theoretical background (1996) · cites this paper as [21]

Cited by

Sorted by citations

Authors
Pound, R. V., & Rebka, G. A.
Affiliations
Harvard University (US)
Venue
Physical Review Letters
Published
1960-04-01
Volume
4
Issue
7
Pages
337-341
ISSN
0031-9007 (ISSN-L)
OpenAlex
W1966675562
Cited by
804
References
0
Citations by year
2026: 33 · 2025: 44 · 2024: 35 · 2023: 20 · 2022: 30 · 2021: 20 · 2020: 18 · 2019: 52 · 2018: 43 · 2017: 17 · 2016: 40 · 2015: 26 · 2014: 22 · 2013: 15 · 2012: 18
FWCI
20.60
Type
journal article
Language
en
Open access
Locations
Physical Review Letters (publishedVersion)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Relativity and Gravitational Theory
  • Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Scientific Research and Discoveries
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum and Classical Electrodynamics
Keywords
gravitational redshift, gravitational potential, photon frequency shift, gamma radiation, electromagnetic radiation

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