Arthur Stanley Eddington
modernPhilosophy of Science, Structural Idealism1882 – 1944
Arthur Stanley Eddington (1882–1944) was a British astrophysicist and philosopher of science whose 1919 solar eclipse expedition provided the first empirical confirmation of Einstein's general theory of relativity. Beyond his scientific achievements, he made substantial contributions to the philosophy of physics, arguing for a form of structural idealism in which the physical world is constituted by mind-imposed mathematical relations. His philosophical writings explored the epistemological foundations of modern physics, engaging critically with contemporaries such as Reichenbach and Weyl on questions of geometry, measurement, and physical reality.
Notable Achievements
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Led the 1919 solar eclipse expedition confirming Einstein's prediction of light bending by gravity
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Developed foundational work on stellar structure and the mass-luminosity relation
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Argued for structural idealism in the philosophy of physics in 'The Nature of the Physical World' (1928)
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Engaged critically with Reichenbach and Weyl on the epistemology of spacetime geometry
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Pioneered philosophical analysis of the relationship between physical theory and observational measurement