Centenary of the total solar eclipse that confirmed General Relativity

Prof. Thomas Ray (left), from the Dublin Institute for Advanced Studies (Ireland), and Prof. Crispino, with the 4-inch lens and the 8-inch coelostat that confirmed General Relativity in Sobral, Ceará, during the May 29, 1919 total solar eclipse. Photo taken by Ruth Ray in Sobral, on May 29th, 2019, exactly 100 years after the historical achievement. (May/2019)