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wave·num·ber (σ),

The number of waves per centimeter (cm-1), used to simplify the large and unwieldy numbers heretofore used to designate frequency.
See also: wave number.
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References in periodicals archive ?
1] for the untreated MMT is shifted toward higher wavenumbers for the organomodified clays: 1036 [cm.
Contributions in this direction are the expressions presented by Wait [2], Moore and Blair [3], and Bannister [4,5], which have been derived under the assumption that the ratio between the wavenumbers in free-space ([k.
Chiral nihility metamaterial has two wavenumbers of equal magnitude but opposite signs.
2]), and where the x- and y-components of the wavenumbers vanish in both frames.
Particularly significant are bands appearing at wavenumbers within the range 733 and 950 nm (experimental) in the IR spectrum, which is due to the contribution of the O-O peroxidic bond stretching.
The major change was loss of peaks at wavenumbers of 1600 [cm.
The single-stage instrument assures good signal to noise and ease of use for detection of Raman shifted above approximately 300 wavenumbers from the Raleigh scatter.
The bulk of the book consists of tables recommended calibration bands covering four solvents (benzene, toluene, chlorobenzene, and dichloromethane), optical paths ranging from 2 to 100 [[micro]meter] and wavenumbers ranging from 4800 to 600 [cm.
The result was a single frequency source that tuned across 275 wavenumbers, or 24% of the laser's center wavelength at 8.
On the other hand, for very large wavenumbers, that is, very small wavelengths, these equations show that [[omega].
However, the integrated quadratic energy, which is obtained by the integration of the quadratic energy over the wavenumbers, is not conserved in general but conserved only in the weakly nonlinear limit.