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Alfred Arthur Robb or Alfred A. Robb FRS (18 January 1873 in Belfast – 14 December 1936 in Castlereagh) was a British physicist. Robb studied at Queen's College in Belfast and at St John’s College in Cambridge. He then proceeded to University of Göttingen, where guided by Woldemar Voigt, he wrote his dissertation on the Zeeman effect. He also worked under J. J. Thomson at the Cavendish Laboratory. The Croix de Guerre was awarded to him, and in 1921 he became a fellow of the Royal Society.〔 He is known for his four works on special relativity (1911, 1914, 1921, 1936) where he gave a spacetime derivation of the theory in an axiomatic-geometric way.〔A. J. Briginshaw, ''The axiomatic geometry of Space-Time: An assessment of the work of A. A. Robb'', Centaurus 22, pp. 315-323 (1979)〕 Robb therefore was sometimes called the "Euclid of relativity". In the first of these works he used a hyperbolic angle ω to introduce the concept of rapidity〔Robb (1911) ''Optical Geometry of Motion'', p.9.〕 and showed that the kinematic space of velocities is hyperbolic, so that "instead of a Euclidean triangle of velocities, we get a Lobachevski triangle of rapidities".〔Robb (1911) ''Optical Geometry of Motion'', p.29〕 However, contrary to the scientific mainstream, he believed that the works of Joseph Larmor and Hendrik Lorentz were more important for relativity than the works of Albert Einstein and Hermann Minkowski.〔Sanchez-Ron, pp. 46-49〕 ==Publications== * * * * 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Alfred Robb」の詳細全文を読む スポンサード リンク
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