Deflexion of Light in the Gravitational Field without using Einstein Geometry

Abstract

IN a communication in Nature¹, Cheng has shown that the advance of perihelion can be easily obtained from a classical Lagrangian with contraction of length and time in the gravitational field but without the use of the Einstein geometry. Applying this same result to a beam of light passing through the sun's surface with h = r²o?² = r₀c, it is found that the deflexion angle would be 2.61.