Open AccessOptical properties of substances at the critical point
Author(s) -
C. Lavett Smith
Publication year - 1912
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1912.0090
Subject(s) - dielectric , refractive index , constant (computer programming) , electromagnetic radiation , square (algebra) , physics , molecule , point (geometry) , electrical conductor , condensed matter physics , optics , quantum mechanics , mathematics , geometry , computer science , programming language
Clausius has shown that, assuming the molecules of a substance are spherical perfect conductors, Maxwell’s electromagnetic theory leads to the relation K = 1 + 2g /1-g , where K is the dielectric constant as defined by Maxwell, andg is the ratio of the volume actually occupied by the molecules to that apparently occupied by the molecules. Thereforeg = K - 1/K + 2 =n 2 - 1/n 2 + 2, since the electromagnetic theory of light requires that the dielectric constant, should be very approximately equal to the square of the refractive index for light of infinite wave-length.