A Journal of Natural Philosophy, Chemistry, and the Arts

London: G. G. and J. Robinson, 1798. Book. Illus. by With Engravings. Near Fine. Full Leather. First Edition. 4to - over 9¾" - 12" tall. London: G.G. and J. Robinson, 1798. 4to. Full contemporary tree calf. April 1797 to March 1798. Includes article by Brougham, "Experiments and Observations on the Inflexion, Reflexion, and Colours of Light," pp. 551-563 and 585-597. xviii, 25 (two have the same number XIX) copper engraved plates, 2 of which are folding, complete. 620 pp. Propositions respecting the means by which light is made to alter its directions. Experiments and observations. The least refrangible rays are such as deviate most by inflexion and also by deflexion. Flexion, refraction and reflexion are performed by a forcing acting at a definite distance. Coloured spectrum by reflexion. Order of the colours. They are not produced by any new modification, but by the ordinary decomposition of light. The colour-making rays thus separated are homogeneous and unchangeable. The least refrangible rays are the most reflexible, or rebound nearest the perpendicular. Spectrum by reflexion is divided in the same proportions as the Newtonian spectrum by refraction. Measurement of the colours. On the physical cause of reflexibility. Near fine condition..