Historians of science have often wondered how physicists in colonial India were able to contribute so significantly to the emerging quantum mechanics in Western Europe during the 1920s. This book addresses this question by focussing on a group of bhadrolok physicists in the period before Indian independence. The term bhadralok refers to the then emerging group of native intelligentsia, who were identified by academic pursuits and manners and effectively transcended the existing class and caste barriers of the colonial society. The work and social interactions of three scientists is explored...