Abstract

As a result of the discovery of an unusually large electro-optical effect in certain colloidal solutions of bentonite it has become possible to study and measure inhomogeneous electric fields by an optical method which is analogous to that of photoelasticity. Observations with crossed Polaroids show two orthogonal systems of lines. The isoclinic lines determine the field direction, the isochromatic lines give the field intensity in any point, of a plane field. The method employs a.c. potentials of less than 200 volts.

© 1941 Optical Society of America

Electro-Optical Properties of Colloids

Hans Mueller and Bernhard W. Sakmann
J. Opt. Soc. Am. 32(6) 309-317 (1942)

A New Calculus for the Treatment of Optical SystemsI. Description and Discussion of the Calculus

R. Clark Jones
J. Opt. Soc. Am. 31(7) 488-493 (1941)

A New Calculus for the Treatment of Optical SystemsII. Proof of Three General Equivalence Theorems

Henry Hurwitz and R. Clark Jones
J. Opt. Soc. Am. 31(7) 493-499 (1941)

A New Calculus for the Treatment of Optical SystemsIII. The Sohncke Theory of Optical Activity

R. Clark Jones
J. Opt. Soc. Am. 31(7) 500-503 (1941)

Optics of Atmospheric Haze

E. O. Hulburt
J. Opt. Soc. Am. 31(7) 467-476 (1941)