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2017
The Doppler light (wavelength or frequency) shift depends on relative velocity alone. Demanding Lorentz invariance of the light wave phase, we show that the Doppler shift is reciprocal: any two observer-sources will find a reciprocal Doppler light shift which allows each of the two to identify the relative velocity vector. Time dilation, i.e.
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The Doppler light (wavelength or frequency) shift depends on relative velocity alone. Demanding Lorentz invariance of the light wave phase, we show that the Doppler shift is reciprocal: any two observer-sources will find a reciprocal Doppler light shift which allows each of the two to identify the relative velocity vector. Time dilation, i.e.
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Doppler Interpretation of Quasar Red Shifts
Science, 1966The hypothesis that the quasistellar sources (quasars) are local objects moving with velocities close to the speed of light is examined. Provided there is no observational cutoff on apparent bolometric magnitude for the quasars, the transverse Doppler effect leads to the expectation of fewer blue shifts than red shifts for an isotropic ...
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Doppler-shifted Fourier Transform Spectroscopy
Fourier Transform Spectroscopy: New Methods and Applications, 1999This paper describes the principles and applications of Doppler-shifted (DS) Fourier Transform Emission (FTE) spectroscopy.
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Doppler Phase-Shifting Digital Holography
Frontiers in Optics 2011/Laser Science XXVII, 2011In digital holography, continuous reference mirror movement generates phase modulation. The object phase is obtained by the phase at one of peaks in Fourier spectra of time-varying fringe data. Some applications are presented.
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Doppler Shift of Surface Backscatter
The Journal of the Acoustical Society of America, 1972Spectral analyses of underwater backscattered sound are carried out. Measurements are presented showing different Doppler shifts for volume and surface reverberation. Reversal of Doppler polarity is shown for 180° rotation of the underwater sound transducer.
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Doppler shift dominated cyclotron masers
International Journal of Electronics, 1984Abstract Since in a Doppler shift dominated cyclotron maser, the Doppler term is the main contribution to the output frequency, the electron-beam momentum spread plays an important role in determing the gain and efficiency. It is demonstrated by computer simulations that the increase in beam momentum spread diminishes the gain slightly but reduces the ...
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On Doppler-Shift Attenuation Measurements
Canadian Journal of Physics, 1972An improved analysis of Doppler-shifted γ spectra is outlined. This analysis is exact within the Lindhard theory of slowing down of heavy ions in solids.With an approximate cross section applicable at low energies, the equations become independent of the energy, except as a scaling parameter, and depend only on the projectile–target mass ratio.
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Journal of the Optical Society of America, 1967
It is first shown that the ideal electron plasma (presence of protons neglected) is unique among all dispersive media in that it does not distinguish any inertial frame of reference in terms of utility. The theory of the Doppler shift in an ideal plasma is then developed by simultaneous employment of two inertial frames of reference.
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It is first shown that the ideal electron plasma (presence of protons neglected) is unique among all dispersive media in that it does not distinguish any inertial frame of reference in terms of utility. The theory of the Doppler shift in an ideal plasma is then developed by simultaneous employment of two inertial frames of reference.
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A-to-Z Guide to Thermodynamics, Heat and Mass Transfer, and Fluids Engineering, 2006
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