Elements of natural philosophy (Volume 2-3) . Uay of —li Beam of light. Pencil of light. REFLEXION AND REFRACTION OF LIGHT.§ 9. The reciprocal action between the molecules of reflexion and t iii r»jiii i«i t refraction of various substances and those ot the ether which pervades ]i<yllt. them, causes the latter fluid to exist in a state of different elasticity and density in different bodies. By reference to Equation (3), Acoustics, we recall that the wave velocity increases with the elasticity of the medium and decreases with its density; and, § 71, same subject, shows us, that wThe
Elements of natural philosophy (Volume 2-3) . Uay of —li Beam of light. Pencil of light. REFLEXION AND REFRACTION OF LIGHT.§ 9. The reciprocal action between the molecules of reflexion and t iii r»jiii i«i t refraction of various substances and those ot the ether which pervades ]i<yllt. them, causes the latter fluid to exist in a state of different elasticity and density in different bodies. By reference to Equation (3), Acoustics, we recall that the wave velocity increases with the elasticity of the medium and decreases with its density; and, § 71, same subject, shows us, that wThen a wave is incident upon the boundary of a medium of different density from that in which it is moving, it will be resolved into two component wTaves, one of which will be driven back from the bounding surface, while the Follows the samt other will be transmitted and conducted through the newlawsassoll]ld; medium. Light, like sound, will, therefore, be reflected and refracted, and according to the same laws. 172 NATURAL PHILOSOPHY. And the circumsta
Size: 1345px × 1857px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectmechanics, booksubjectopticsandphoto
