Eddington and the gravitational bending of light — with the translation of “Weighting Light” from his classic book “Space, Time and Gravitation”

Abstract Arthur Eddington, one of the main proponents and principal manager of the british expeditions that observed the 1919 eclipse in Sobral and in the Island of Principe, put down his observations and the results obtained in the photographic plates in his classical book Space, Time and Gravitation. This article consists in translation and notes on the fundamental participation of Eddington in validating the gravitational deflection of light, one of the predictions from Einstein's theory of general relativity.