Definition & Betydelse | Engelska ordet WAVENUMBER

Definition av WAVENUMBER

1. (matematik) vågtal

Exempel på hur man kan använda WAVENUMBER i en mening

• The independent variable is usually the wavelength of the light or a closely derived physical quantity, such as the corresponding wavenumber or the photon energy, in units of measurement such as centimeters, reciprocal centimeters, or electron volts, respectively.
• In the physical sciences, the wavenumber (or wave number), also known as repetency, is the spatial frequency of a wave, measured in cycles per unit distance (ordinary wavenumber) or radians per unit distance (angular wavenumber).
• Thus, for instance, westerlies might be a good waveguide for eastward-traveling waves, but might strongly dissipate westward-traveling waves, by increasing or decreasing their vertical wavenumber, respectively.
• In spectroscopy, an isosbestic point is a specific wavelength, wavenumber or frequency at which the total absorbance of a sample does not change during a chemical reaction or a physical change of the sample.
• Its magnitude is the wavenumber of the wave (inversely proportional to the wavelength), and its direction is perpendicular to the wavefront.
• For example, Herzberg works with irradiance and wavenumber; Yariv works with energy per unit volume per unit frequency interval, also Chandrasekhar; also Goody & Yung; Loudon uses angular frequency and radiance.
• Modified wavenumber analysis shows that the first-order upwind scheme introduces severe numerical diffusion/dissipation in the solution where large gradients exist due to necessity of high wavenumbers to represent sharp gradients.
• This dispersion relation is vitally dependent on the sign of the term within the square root, as if positive, the wavenumber will be real, corresponding to mere oscillations around the unperturbed solution, whilst if negative, the wavenumber will become imaginary, corresponding to exponential growth and thus instability.
• In recent years, he developed the sub wavenumber high resolution broadband SFG-VS and demonstrated its ability for obtaining intrinsic and accurate spectral lineshape in SFG-VS and other nonlinear spectroscopic techniques, such as the Femtosecond Stimulated Raman Spectroscopy (FSRS).

Förberedelsen av sidan tog: 152,49 ms.