Soon after Einstein’s calculation of the effect of the Sun’s gravitational field on the propagation of light in 1911, astronomers around the world tried to measure and verify the value. If the first attempts in Brazil in 1912 or Imperial Russia in 1914 had been successful, they would have proven Einstein wrong.
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L.C.B.C. acknowledges partial support from Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)—Finance Code 001, from Brazil, as well as the European Union’s Horizon 2020 research and innovation programme under the H2020-MSCA-RISE-2017 grant no. FunFiCO-777740.
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Crispino, L.C.B., Paolantonio, S. The first attempts to measure light deflection by the Sun. Nat Astron 4, 6–9 (2020). https://doi.org/10.1038/s41550-019-0995-5