Sine wave - Wikipedia

A sine wave, sinusoidal wave, or just sinusoid is a mathematical curve defined in terms of the sine trigonometric function, of which it is the graph.It is a type of continuous wave and also a smooth periodic function.It occurs often in mathematics, as well as in physics, engineering, signal processing and many other fields.. Its most basic form as a function of time (t) is:


Redox-influenced seismic properties of upper-mantle …

Redox conditions and associated defect chemistry rather than water content, as previously thought, strongly influence the seismic properties of olivine, the main constituent mineral of Earth's ...


How to Generate Sine Wave using PWM with PIC ...

Time period of one sine wave = 40 * 10^-6 * 50 = 2ms. Since the frequency is the reciprocal of the time period the frequency of the sine wave can be calculated as; Frequency = 1 / Time period = 1 / 2 * 10^-3 = 0.5 * 10^3 Hz. The frequency of the sine wave = 500 Hz. PWM Duty-cycle:


Examples of sine waves - Sinusoidal waves

24%Sinusoidal curves are found everywhere (literally, everywhere), since they are waves. Sound waves, the electromagnetic spectrum and even actual waves in the ocean, all have the form of sine waves. Sound waves and the electromagnetic spectrum waves are invisible to the naked eye, so you might not be aware of them.


(PDF) Thermal diffusivity of olivine under upper mantle ...

9.3 X lo-' and order to cancel out the effect of the higher harmonic terms 8.1 X 10 mr s--' at 400, 500 and 600 K, respectively. of the temperature wave to fitting the data points to the However, the values obtained by Kanamori et al. (IY68). sinusoidal curve.


Hydrogen loss from olivines in mantle xenoliths from ...

sinusoidal backgrounds that varied in wavelength for each sample, each grain, and each direction. These are likely interference patterns of the infrared light hitting microscopic imperfections within the olivine. Simple background subtraction of dehydrated olivine was therefore not possible. In order to obtain a flat baseline,


24HZ Sine Wave Through Water // Reversing Water in Mid Air

24HZ Sine Wave Through WaterThis was a university project to test the effects of playing a sine wave through water and capturing it with a camera.The effect ...


Phase transitions and short timescale sinusoidal motions

Our results indicate that the sinusoidal force applied to the sample in olivine-ringwoodite region has much lower bulk modulus and higher Q−1 than in the single-phase regions.


In situ observation of texture development in olivine ...

lithosphere [2]. Fast wave propagation directions overall correspond to flow directions as implied from plate motions. Hess attributed anisotropy to preferred orientation of olivine that was attained during mantle convection. This concept has generally been accepted and is supported by quantitative polycrystal plasticity simulations (e.g. [3,4]).


Sinusoidal Wave - an overview of sine wave and formula of ...

A sinusoidal wave is a finest waveform that oscillates means moves above and below zero periodically which is shown in figure. This kind of wave pattern occurs in wind, sound and light etc. The alternating changing of voltage and current are also kind of sinusoidal wave (sine wave). The sine wave shows the how the amplitude changes with the time.


Shear wave attenuation and dispersion in melt‐bearing ...

1. Introduction [2] In order to investigate the effect of the presence of melt on shear modulus and attenuation in rocks representative of the upper mantle, we conducted torsional forced oscillation and microcreep experiments on melt-bearing olivine polycrystals as described in detail by Jackson et al..All six specimens show a broad peak in attenuation, superimposed …


Pore fluid effects on elastic wave velocities of ...

An input signal consisting of a sinusoidal wave with 5 V amplitude and 2 MHz frequency was transmitted though the specimen via a function generator. The output signal was digitized and received by an oscilloscope. ... This anisotropy is commonly considered to form due to the alignment of olivine crystals (e.g., Tanimoto and Anderson, 1984).


Basics of non-sinusoidal waveforms

Basics of non-sinusoidal waveforms. A non-sinusoidal waveform is one that is not a sine wave and is also not sinusoidal (sine-like). This may sound like a minor distinction but actually there are some substantive implications. A simple sine wave display. A sine wave is the graph of the sine function, usually with time as the independent variable.


Wave Attenuation - an overview | ScienceDirect Topics

Seismic wave attenuation is often quantified using a quantity called the quality factor, Q. We can express ϵ in Eq. (2.36) in terms of a quality factor by defining. (2.37)ϵ = γ mω0 = 1 2Q. Q is the ratio of the mass- and spring-related terms to the coefficient of friction, γ. Q has an inverse relationship with attenuation, the smaller Q ...


Sinusoidal Wave - an overview | ScienceDirect Topics

A sine wave or sinusoidal wave is the most natural representation of how many things in nature change state. A sine wave shows how the amplitude of a variable changes with time. The variable could be audible sound for example. A single pure note is a sine wave, although it would sound a very plain and flat note indeed with none of the harmonics we normally hear in nature.


Earth materials Flashcards | Quizlet

Mostly consists of olivine & orthopyroxene (almost no CPX) ... Occurs when the phase difference between the sinusoidal waves is an even multiple of π (180°) (a multiple of 2π, 360°) Waves "in phase" will be brighter with higher amplitude (affects intensity)


Examples of sine waves - Sinusoidal waves

Sinusoidal curves are found everywhere (literally, everywhere), since they are waves. Sound waves, the electromagnetic spectrum and even actual waves in the ocean, all have the form of sine waves. Sound waves and the electromagnetic spectrum waves are invisible to the naked eye, so you might not be aware of them.


Effect of phase transitions on compressional-wave ...

For seismic waves 2, with δP of roughly 10-7 GPa, ΔP tran of 0.3 GPa (width of the olivine–wadsleyite two-phase loop), d of 1 cm and D of 10-15 m 2 s-1 for iron–magnesium exchange 13, τ 1 ...