Experimental determination of the absolute phase path of radio waves reflected from the ionosphere at normal incidence

1964 ◽  
Vol 52 (7) ◽  
pp. 858-859 ◽  
Author(s):  
N.N. Rao ◽  
H.M. Swarm ◽  
A.E. Harrison
Keyword(s):  
Experimental Determination ◽  
Normal Incidence ◽  
Radio Waves ◽  
Absolute Phase ◽  
Phase Path ◽  
The Absolute

Experimental Determination of Absolute A Coefficients for 'Forbidden' Atomic Oxygen Lines

1975 ◽  
Vol 53 (5) ◽  
pp. 455-458 ◽  
Author(s):  
J. A. Kernahan ◽  
P. H-L. Pang
Keyword(s):  
Experimental Determination ◽  
Atomic Oxygen ◽  
Transition Probabilities ◽  
Absolute Intensity ◽  
Inert Gas ◽  
The Absolute ◽  
Oxygen Discharge

We have obtained the transition probabilities of the 5577 Å, and 6300 Å lines of [OI] by simultaneously measuring the absolute intensity and the population of the upper state of each line in an inert gas–oxygen discharge. Further, we have obtained A values for the 2972 Å and 6364 Å lines by measuring relative intensities of lines from the 1S0 and 1D2 levels.

On experimental determination of the free-field correction of laboratory standard microphones at normal incidence

Metrologia ◽  
2007 ◽  
Vol 44 (1) ◽  
pp. 57-63 ◽  
Author(s):  
Salvador Barrera-Figueroa ◽  
Knud Rasmussen ◽  
Finn Jacobsen
Keyword(s):  
Experimental Determination ◽  
Free Field ◽  
Normal Incidence

A new method for the absolute measurement of reflectivity

1966 ◽  
Vol 35 (274) ◽  
pp. 861-866 ◽  
Author(s):  
P. M. D. Bradshaw ◽  
R. Phillips ◽  
R. A. Smith
Keyword(s):  
Light Beam ◽  
Normal Incidence ◽  
Absolute Measurement ◽  
New Method ◽  
Spectral Reflectivity ◽  
The Absolute

SummaryThe theory of a new method for the determination of reflectivity at truly normal incidence is described. A parallel light beam falls on the specimen after passing through a glass cube with semi-silvered diagonal mounted at the centre of an optical goniometer. The various reflected beams are measured by a photomultiplier fixed to the telescope of the goniometer. Experiment has proved the validity of the method and the spectral reflectivity of pyrite in air and in oil has been investigated.

The experimental determination of the velocity of radio waves

1936 ◽  
Vol 222 (5) ◽  
pp. 551-562 ◽  
Author(s):  
R.C. Colwell ◽  
N.I. Hall ◽  
L.R. Hill
Keyword(s):  
Experimental Determination ◽  
Radio Waves

Resonant Scattering and Absolute Phase Applied to Cylindrical and Spherical Hollow Fluids Embedded in an Elastic Medium: A Numerical Simulation

2013 ◽  
Vol 682 ◽  
pp. 85-95
Author(s):  
R. Rezzoug ◽  
H. Djelouah ◽  
L. Louni
Keyword(s):  
Numerical Simulation ◽  
Fluid Inclusion ◽  
Elastic Medium ◽  
Acoustic Waves ◽  
Acoustic Scattering ◽  
Normal Incidence ◽  
Resonant Scattering ◽  
Absolute Phase ◽  
The Matrix ◽  
The Absolute

This paper is based on the study of acoustic scattering classic RST, in which it was introduced the method of MRST (multichannel resonant scattering theory) to study the problem of interaction of acoustic waves normal incidence in environments consisting of a biphasic isotropic elastic matrix in which is inserted a fluid inclusion (cylindrical or spherical). Initially we implement the transition matrix S containing the mode n of the longitudinal (L) and transverse (T) of the wave in the elastic medium. The isolation of resonances characteristic of the fluid inclusion is done via the S-matrix factorization as a product of the matrix of soft bottoms no resonant matrix and resonances. To improve the localization of the resonances we undertake a study of the absolute phase in connection with MRST. A numerical simulation of cavity fluid (water) cylindrical and spherical copper in a matrix, showed the effectiveness of the absolute phase spectra for the exact determination of the resonances.

Accurate determination of the absolute phase and temporal-pulse phase of few-cycle laser pulses

2007 ◽  
Vol 16 (2) ◽  
pp. 472-477 ◽  
Author(s):  
Xia Ke-Yu ◽  
Gong Shang-Qing ◽  
Niu Yue-Ping ◽  
Li Ru-Xin ◽  
Xu Zhi-Zhan
Keyword(s):  
Accurate Determination ◽  
Laser Pulses ◽  
Absolute Phase ◽  
Pulse Phase ◽  
The Absolute ◽  
Temporal Pulse
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