Three independent velocities of sound can be measured along any direction of propagation in a cubic crystal except the [100] and [111] directions. These three velocities suffice to determine the three elastic constants and for the [110] direction,...
local electron density, artificial satellite, ionosphere, refractive index, frequency, "whistler", antenna
A method is proposed for measuring the electron density at known points in the outer ionosphere, by the use of vlf receiving equipment in an artificial satellite, in conjunction with a vlf transmitter on the ground. The transmitter would radiate...
A numerical integration procedure to calculate the second virial coefficient of simple polyatomic molecules is proposed. The intermolecular pair potential is assumed to be a sum of a spherically symmetric contribution and an unsymmetric, angular...
The theory and experimental procedures are given for the self-calibration of insertion loss or attenuation-measuring systems. Four circuit configurations are developed. The calibrations may be obtained by simple graphical means or by an analytical...