Abstract

The object of this investigation was to test experimentally the assumption of electromagnetic dispersion theory that the natural period of vibration of the resonators of a medium remains constant with variations in pressure. Two dilute aqueous solutions of uranine of slightly different concentrations were studied in the high pressure spectrometer. Refractive indices for the three principal lines of the mercury arc, and for the wave-length corresponding to the absorption band maximum (4390A) were determined for pressures ranging up to 915 kg per cm² in one solution, and up to 1823 kg per cm² in the other. It was found that the absorption band retained its position relative to the rest of the spectrum formed by the liquid prism under various pressures. It is concluded that the natural frequency of vibration of the resonators is affected to no measurable extent by the pressure or density of a medium.

© 1936 Optical Society of America

A Spectrometer for Studies at High Pressures

W. James Lyons and Franklin E. Poindexter
J. Opt. Soc. Am. 26(4) 146-148 (1936)

Pressure Effect on Sensitivity of Different Photographic Films

Ny Tsi-Zé and Lü Ta-Yuan
J. Opt. Soc. Am. 26(1) 26-29 (1936)

The Polarimetric Determination of Optical Properties

Richard M. Emberson
J. Opt. Soc. Am. 26(12) 443-449 (1936)

A Low Voltage Source of Ultraviolet Continuum

A. E. Smith and R. Dudley Fowler
J. Opt. Soc. Am. 26(2) 79-82 (1936)

The Reflection and Absorption of Daylight at the Surface of the Ocean

Wilson M. Powell and George L. Clarke
J. Opt. Soc. Am. 26(3) 111-120 (1936)