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LOW-FREQUENCY HEATING REVISITED
Nuclear Fusion, 1981By making use of a general formulation of the MHD energy theorem the power deposited by ideal-MHD waves in a stable plasma is calculated in a straightforward way. When applied to very-low-frequency waves with is the wave vector and the Alfven velocity vector), the principle shows that heating at the shear Alfven wave resonance is inefficient.
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Sketches for a Low-Frequency Solfege
Music Theory Spectrum, 1985How legitimate is it, today, to apply musical criteria to phenomena we have come to regard as non-musical? To periodic events, for example, occurring beyond the frequency/amplitude/waveform ranges and patterns within which music is located (according to conventional Western notions)?
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Low-frequency dynamics of lasers
Chaos: An Interdisciplinary Journal of Nonlinear Science, 1996An approach to nonlinear dynamics of multimode lasers is developed. It is based on the concept of two systems of eigenoscillations: optical modes and relaxation oscillations. The importance of a correct (not arbitrary) choice of a model is underlined. Characteristic features of two different rate equation models are formulated and compared. A method of
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A Differentiator for Low-Frequency Signals
IEEE Transactions on Biomedical Engineering, 1978An electronic differentiator specifically for low-frequency signals is described. The difference between a signal and its staircase approximation is computed; the peaks of this function approximate the time derivative of the input signal. By regulating the width of the steps in the staircase function, very slow signals can be differentiated.
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Low-frequency masking patterns
The Journal of the Acoustical Society of America, 1977Tones below 500 Hz show masking effects that are different from those of higher-frequency tones. Where middle- and high-frequency tones have their maximum effect at the masking frequency, and most of the rest of their effect at frequencies higher than themselves, low-frequency tones are consistently most effective in the 400- to 600-Hz range.
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Myoelectric reactions to ultra-low frequency and low-frequency whole body vibration
European Journal of Applied Physiology and Occupational Physiology, 19885 healthy males were exposed to vertical sinusoidal whole body vibration (WBV) at 5 frequencies (F1 = 0.315 Hz, F2 = 0.63 Hz, F3 = 1.25 Hz, F4 = 2.5 Hz, F5 = 5.0 Hz) and 2 intensities (I1 = 1.2 ms-2 rms, F1-F5; I2 = 2.0 ms-2 rms, F2-F5). Erector spinae EMGs were derived at the levels of the first thoracic (T1) and third lumbar (L3) spinous processes ...
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Spacecraft low-frequency residual acceleration
Journal of Spacecraft and Rockets, 1995An analytical model is described to calculate the low-frequency acceleration, which is intended to replace the rather crude estimations applied to analyze previous Spacelab missions. The three principal low-frequency perturbations of the Space Shuttle Orbiter are taken into account: atmospheric drag, gravity gradient (tidal effect), and spacecraft ...
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Low Frequency Techniques Very Low Frequency Mechanical Spectroscopy
Materials Science Forum, 1993J. Woirgard, Andre Rivière
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Challenges and opportunities of gravitational-wave searches at MHz to GHz frequencies
Living Reviews in Relativity, 2021David J. Ottaway +2 more
exaly
Low-Frequency Detection and Ranging
2022JADIDIAN JOUYA, PATOLE SUJEET MILIND
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