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Author: Alfred Kahan
Publisher:
Published: 1964
Total Pages: 28
ISBN-13:
DOWNLOAD EBOOKMethods of obtaining the optical constants of a material from the analysis of the reflectivity spectrum are given. Both the Kramers-Kronig integral relations and the classical oscillator theory are discussed and applied to the infrared lattice vibration data of Mg2Sn and CaF2.
Author: E. A. Lewis
Publisher:
Published: 1965
Total Pages: 50
ISBN-13:
DOWNLOAD EBOOKVery narrow-band quenched filters used for studying VLF radio signals differ from conventional narrow-band circuits in that both signal and atmospheric noise impulses cause only brief quasi-sinusoidal outputs instead of a prolonged ringing. The random overlapping of these short noise and signal bursts can cause errors in phase measurements. It is shown that the distribution of phase errors can be calculated from the amplitude distribution of the output noise envelope. The properties of the phase distribution are discussed in detail, the computation required in the general case is illustrated by means of a numerical example. A simple 'time-sequential' method for experimentally obtaining typical amplitude distributions is suggested. (Author).
Author: E. A. Lewis
Publisher:
Published: 1965
Total Pages: 18
ISBN-13:
DOWNLOAD EBOOKA nearly vertical antenna wire varying in length from 3000 to 8000 ft was shock-excited by a high-voltage source. The resulting radiation fields were received at distances of about 600 km by two stations separated laterally so as to subtend an angle of about 15© at the source. The difference in wavefront arrival times at the two stations, observed for 101 transmissions, showed an average absolute deviation from the mean of about only 1/2 [mu]s. This figure includes the effects of possible source asymmetries, sferics noise, instrumental errors, and wave propagation. Typical oscillograms of antenna currents and radiation fields are given. It is shown that the amplitudes and durations of the pulse envelopes, the amplitudes and durations of the first half-cycles, and the quasi-frequencies of the pulses are in good agreement with a theory that takes energy losses into account.
Author: Marden H. Seavey
Publisher:
Published: 1965
Total Pages: 14
ISBN-13:
DOWNLOAD EBOOKAuthor: Tapan K. Mukherjee
Publisher:
Published: 1965
Total Pages: 16
ISBN-13:
DOWNLOAD EBOOKAuthor: Thomas G. Evans
Publisher:
Published: 1965
Total Pages: 16
ISBN-13:
DOWNLOAD EBOOKA method for online assembly-language debugging which greatly simplifies several of the bookkeeping tasks characteristically associated with that process has been developed and implemented in a program for the UNIVAC M-460 computer at Air Force Cambridge Research Laboratories. With this program, an online user may insert or delete (in symbolic assembly language) any number of lines at any point in his previously assembled program in core, with the remainder of the program being relocated appropriately.
Author: Yūji Inoue
Publisher:
Published: 1965
Total Pages: 46
ISBN-13:
DOWNLOAD EBOOKThe propagation of electromagnetic waves in a horizontally stratified layer of gyrotropic medium is discussed. Derivation of a comprehensive representation for magneto-ionic coupling coefficients allows interpretation of the physical significance of the coupling. Introduction of an invariant quantity for an inhomogeneous medium becomes an important guide for numerical solutions of the wave equation. Numerical results of magneto-ionic coupling coefficients are presented. Based on region properties, characteristic wave types are defined: for the isotropic region, linearly polarized waves are used; for the anisotropic region, elliptically polarized waves generally are applied. (Author).
Author: Richard Payne
Publisher:
Published: 1965
Total Pages: 28
ISBN-13:
DOWNLOAD EBOOKA theory of hydromagnetic ionizing waves has been developed which is valid in the region in which gas pressure is negligible, compared with magnetic pressure. The theory takes into account the energy expended in partial ionization of the gas behind the wave. The usual high conductivity boundary condition behind the wave is not employed. The electric field in front of the wave is taken as a parameter. Results of this theory are compared with available experimental measurements, and show good agreement. (Author).
Author: Kendrick N. Hemmenway
Publisher:
Published: 1965
Total Pages: 14
ISBN-13:
DOWNLOAD EBOOKAuthor: Charles F. Hobbs
Publisher:
Published: 1965
Total Pages: 14
ISBN-13:
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