Abstract
An upper limit is determined for the difference in the deflection of beams of orthogonally polarised radiation passing through the Sun's gravitational field. A null result is anticipated by present theories of gravitation but this prediction has never been tested.
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Harwit, M., Lovelace, R., Dennison, B. et al. Gravitational deflection of polarised radiation. Nature 249, 230–233 (1974). https://doi.org/10.1038/249230a0
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DOI: https://doi.org/10.1038/249230a0
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