School of Historical and Philosophical Studies - Theses
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ItemWilliam Thomson 1841-1851 : Thomson's program of Natural Philosophy and the historical development of the concept of energy( 1999)It is the aim of this thesis, first, to investigate the historical development of Thomson's physico-mathematical theories during the period 1841-51, centred especially on the fields of electricity and magnetism, that led gradually to the emergence of Thomson's concept of energy. Second, to reconstruct Thomson's investigations during this decade under the scope of a program of natural philosophy in the Scottish tradition of abstract dynamics. For this purpose, I have identified two different epistemological grounds in Thomson's work. One, determined by Thomson's program of natural philosophy, whose aim it was to establish a Mathematical Core common to various fields of the natural sciences. The other, determined by Thomson's investigations in electromagnetism - ie, Thomson's program of natural history. Therefore, the task of reconstructing Thomson's work during the decade 1841-51 under the tenets of abstract dynamics became, on the one hand, to set the relationships established by Thomson between his programs of natural philosophy and natural history; on the other, to describe the gradual development of Thomson's mathematical core as it grew in complexity and extension. In the end, I conclude that it was precisely because this common mathematical ground, applicable to various fields of natural phenomena, and established during the decade 1841-51 under the guidance of a program of natural philosophy, that the convertibility and the ubiquitous character of the concept of energy could have been grasped and understood by Thomson.