Rayleigh waves are a type of surface acoustic wave that travel along the surface of solids. They can be produced in materials in many ways, such as by a localized impact or by piezo-electric transduction, and are frequently used in non-destructive testing for detecting defects. Rayleigh waves are part of the seismic waves that are produced on the Earth by earthquakes.

The Draupner wave (or New Year's wave) was the first rogue wave to be detected by a measuring instrument.The wave was recorded in 1995 at Unit E of the Draupner platform, a gas pipeline support complex located in the North Sea about 160 km (100 mi) southwest from the southern tip of Norway.. The rig was built to withstand a calculated 1-in-10,000-years wave …

The Rayleigh–Taylor instability, or RT instability ... In general, the condition for linear instability is that the imaginary part of the "wave speed" c is positive. Finally, restoring the surface tension makes c 2 less negative and is therefore stabilizing. Indeed, there is a range of short waves for which the surface tension stabilizes the ...

Speed: This is the speed at which a point on the wave (for example, a point of maximum stretch or squeeze) travels. For gravitational waves with small amplitudes, this wave speed is equal to the speed of light (c). The speed, wavelength, and frequency of a gravitational wave are related by the equation c = λf, just like the equation for a ...

Mathematical description Single waves. A wave can be described just like a field, namely as a function (,) where is a position and is a time.. The value of is a point of space, specifically in the region where the wave is defined. In mathematical terms, it is usually a vector in the Cartesian three-dimensional space.However, in many cases one can ignore one dimension, and let be a …

The Rayleigh–Ritz method is a direct numerical method of approximating eigenvalues, originated in the context of solving physical boundary value problems and named after Lord Rayleigh and Walther Ritz.. The name Rayleigh–Ritz is being debated vs. the Ritz method after Walther Ritz, since the numerical procedure has been published by Walther Ritz in 1908-1909.

Sinusoidal waves. In linear media, any wave pattern can be described in terms of the independent propagation of sinusoidal components. The wavelength λ of a sinusoidal waveform traveling at constant speed is given by =, where is called the phase speed (magnitude of the phase velocity) of the wave and is the wave's frequency.In a dispersive medium, the phase speed itself …

Rayleigh scattering (/ ˈ r eɪ l i / RAY-lee), named after the 19th-century British physicist Lord Rayleigh (John William Strutt), is the predominantly elastic scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the radiation. For light frequencies well below the resonance frequency of the scattering particle (normal dispersion …

The Rayleigh flow model begins with a differential equation that relates the change in Mach number with the change in stagnation temperature, T 0.The differential equation is shown below. = + (+) Solving the differential equation leads to the relation shown below, where T 0 * is the stagnation temperature at the throat location of the duct which is required for thermally choking …

Whispering-gallery waves were first explained for the case of St Paul's Cathedral circa 1878 by Lord Rayleigh, who revised a previous misconception that whispers could be heard across the dome but not at any intermediate position. He explained the phenomenon of travelling whispers with a series of specularly reflected sound rays making up chords of the circular gallery.