Results 171 to 180 of about 1,314 (214)
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On free oscillations of the earth
Geophysical Surveys, 1974This survey concerns mostly the theory of free oscillations, with a section on experimental work included at the end. Developments over the last 15 years are examined. The general theory of free oscillations is reviewed, and the effect on free oscillations of such factors as heterogeneity, the Earth's rotation and non-sphericity, and the source of the ...
Z. S. Alterman, Y. Eyal, A. M. Merzer
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2020
This chapter is concerned with damped oscillators. Nonlinear oscillators are mainly dealt with, but linear oscillators are also considered or referred to for the sake of comparison or clear extension of the related methodology. First, Lagrangians and conservation laws of viscously damped linear oscillators as well as Duffing oscillators are presented ...
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This chapter is concerned with damped oscillators. Nonlinear oscillators are mainly dealt with, but linear oscillators are also considered or referred to for the sake of comparison or clear extension of the related methodology. First, Lagrangians and conservation laws of viscously damped linear oscillators as well as Duffing oscillators are presented ...
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Free and Forced Oscillations in a Delay Line Oscillator†
International Journal of Electronics, 1967A first-order approximate theory of a delay line oscillator has been developed and used to study the characteristics of the free and forced oscillations. The hysteresis in the forced oscillation characteristics has also been studied with reference to the multi-mode property of the oscillator.
D. N. BASU MALLIK, B. R. NAG
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Free oscillations of the Earth: 1. Toroidal oscillations
Journal of Geophysical Research, 1960The free periods of toroidal oscillations of the earth have been computed for two earth models. The lowest period for the Gutenberg model earth is 2651 sec and for the Jeffreys-Bullen model 2732 sec. The surface amplitudes of the oscillations have been computed for three kinds of delta function stress sources—a unit force, a unit couple, and a unit ...
Freeman Gilbert, Gordon J. F. MacDonald
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2018
This chapter introduces several equivalent mathematical expressions for the oscillation of a physical system and shows how one expression can be transformed into another. The expressions involve the following concepts: amplitude, frequency and phase. The motion of a mass attached to one end of a spring is described by Newton’s laws.
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This chapter introduces several equivalent mathematical expressions for the oscillation of a physical system and shows how one expression can be transformed into another. The expressions involve the following concepts: amplitude, frequency and phase. The motion of a mass attached to one end of a spring is described by Newton’s laws.
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Keeping the Breath in Mind: Respiration, Neural Oscillations, and the Free Energy Principle
Frontiers in Neuroscience, 2021Ezgi Kayhan, Asena Boyadzhieva
exaly
1983
In this chapter the aim is to describe the oscillatory behaviour of a simple system when vibrating freely, that is, without any external influences after the initial start-up.
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In this chapter the aim is to describe the oscillatory behaviour of a simple system when vibrating freely, that is, without any external influences after the initial start-up.
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Self-Oscillations of The Free Turbine Speed in Testing Turboshaft Engine with Hydraulic Dynamometer
Aerospace, 2021Yevhen Martseniuk +2 more
exaly