Descartes's theory of light and refraction : a discourse on method / A. Mark Smith. Smith, Albert Mark, 1942- Descartes, René, 1596-1650. Descartes, René, 1596-1650. Dioptrique. Refraction Early works to 1800. Science Methodology. Includes index. Bibliography: p. 85-89. Philadelphia : American Philosophical Society, 1987. 1987. 1987 Text 92 p. : eng Transactions of the American Philosophical Society, 0065-9746 ; v. 77, pt. 3 (1987) Transactions of the American Philosophical Society ; v. 77, pt. 3.