The challenges facing J.J. Thomson
2016
Thomson's election to the Cavendish Chair William Thomson could still not be enticed back to Cambridge from Glasgow, despite a memorial, spearheaded by J.J. Thomson and sent to him with the signatures of a number of distinguished Cambridge scientists, urging him to stand. The Cavendish Chair was duly advertised and for the first time there was a competitive election. There were five candidates – Richard Glazebrook, Joseph Larmor, Osborne Reynolds, Arthur Schuster and Joseph John (J.J.) Thomson. Larmor was now Professor of Natural Philosophy at Queen'sCollege, Galway, while Reynolds and Schuster both held professorships, in Engineering and Applied Mathematics respectively, at Owens College, Manchester. Somewhat to his own and the University's surprise, the electors offered the chair to the 28-year old Thomson. Glazebrook was Rayleigh's choice, but Davis and Falconer (1997) argue that he was too wedded to the programme of the precise establishment of physical standards to appeal to the electors. Reynolds was thought to be more an engineer than an experimental physicist. The electors took a bold gamble on Thomson, but he undoubtedly had the potential to become a distinguished physicist. Thomson had entered Owens College, Manchester at the age of 14 and was fortunate to be instructed by inspiring scientists – Thomas Barker lectured on mathematics, Balfour Stewart on natural philosophy and Osborne Reynolds on engineering physics. According to Arthur Schuster, Stewart made extensive use of argument by analogy, very much in the Maxwell tradition, and Reynolds, the pioneer of turbulent flow in fluid dynamics, lectured on the role of vortices in fluid motion. In Thomson's final years at Owens College, Schuster lectured on Maxwell's Treatise on Electricity and Magnetism and Poynting, who was to become a lifelong friend, was developing his insights into the interpretation of Maxwell'sequations. This training stood him in good stead when he was successful at his second attempt in obtaining funding in the form of an exhibition to Trinity College; in 1876 he matriculated studying for the Mathematical Tripos. Thomson was coached by Edward Routh and in 1880 he graduated second wrangler behind Joseph Larmor and joint first Smith'sPrize winner.
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