Results 241 to 250 of about 158,434 (296)
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Relativistic Doppler-shift effects
Physical Review D, 1985The lack of knowledge of relativistic distribution functions for interacting particles introduces uncertainty into the cosmological interpretation of Doppler shifts, particularly for systems such as quasars. Here we define an average Doppler shift, reducible to the nonrelativistic form in the appropriate limit.
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2016
What is the sound of a car engine? Well, actually, that depends very much on where you are! If you sit inside the car, and have time to listen to the engine, you’ll hear a constant humming of the machine. Quite a muffled sound, actually, because nowadays car manufacturers try to make sure that you hear as little of the engine sound as possible.
Benjamin Bahr +2 more
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What is the sound of a car engine? Well, actually, that depends very much on where you are! If you sit inside the car, and have time to listen to the engine, you’ll hear a constant humming of the machine. Quite a muffled sound, actually, because nowadays car manufacturers try to make sure that you hear as little of the engine sound as possible.
Benjamin Bahr +2 more
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Einstein Shift and Doppler Shift
Nature, 1925MAY I ask whether the Einstein shift of spectral lines is supposed to be due to some change of frequency associated with an atomic occurrence while generating waves, or to direct influence of the gravitational potential on ether vibrations after they are generated.
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The Doppler shift lifetimes facility
Hyperfine Interactions, 2013The Doppler Shift Lifetimes chamber is an experimental facility designed to measure the mean lifetimes of excited nuclear states that decay within femtoseconds via the detection of their Doppler-shifted γ ray transitions.
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Doppler Phase-Shifting Digital Holography
Advances in Imaging, 2009A novel reconstruction method utilizing optical Doppler effect for digital holography was proposed. Some images were obtained by a high speed camera to remove the zeroth-order and conjugate images and recorded object images were reconstructed.
Daisuke Barada +2 more
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Doppler shift of electron waves
Proceedings, annual meeting, Electron Microscopy Society of America, 1978In an electron mirror interference microscope (1) two coherent partial waves are reflected by an electrostatic mirror (Fig.1). The mirror surface (“object”) is slowly tilted using a cylindrical piezo-ceramic spacer (€ = Δl/Δ U = 6 Å/V) one cm in length and one cm in diameter which produces a tilt angle of Δl/s = ɛ-Δu/s where s is the length of the ...
G. Möllenstedt, H. Lichte
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Estimation of differential Doppler shifts
The Journal of the Acoustical Society of America, 1979If the acoustic signal radiated by a moving source is observed at two or more locations, the received signals exhibit differential Doppler shifts which provide information about source motion. This paper calculates minimum mean-square errors for the estimates of differential Doppler shifts, which can be obtained in a given observation interval.
Schultheiss, Peter M., Weinstein, Ehud
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Localization by Doppler Derivatives and Doppler-Shifted Frequencies
IEEE Transactions on Signal ProcessingzbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xiaochuan Ke, K. C. Ho
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Acoustic Doppler shifts in medicine
Applied Acoustics, 2007This is a brief discourse on the history of the uses of acoustic Doppler frequency shifts in modern medicine. The Doppler effect and the Doppler equation are discussed. The technological developments over the last half century are covered, as well as their applications in diagnostic medical sonography.
Terry J. DuBose, Anthony L. Baker
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Doppler shifts in zodiacal light
Planetary and Space Science, 1987Abstract Doppler shifts in zodiacal light are calculated for various eccentricities, dust sizes, and assumptions about radiation pressure. The purpose is to determine what effects in spectra might be observed which would enhance our understanding of the origin and lifetimes of interplanetary dust. The solar absorption line half-width in the scattered
D.C. Hirschi, D.B. Beard
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