equivalent width


Also found in: Acronyms.

equivalent width

A measure of the strength of a spectral line. The line profile of an absorption line, for example, shows a dip below the continuum level, and the equivalent width is calculated as the area of the dip divided by the height of the continuum. It is the wavelength range of the spectral line if the amount of absorption was redistributed into a rectangle having the intensity of the continuum.

equivalent width

[i′kwiv·ə·lənt ′width]
(physics)
A measure of the total absorption of radiant energy as indicated by an absorption line or absorption band.
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References in periodicals archive ?
The foam-only modulus data, together with the solid modulus data and estimated skin thicknesses, were used to predict the load-deflection behavior of the structural foam samples by means of the equivalent width technique.
At low deflections, where material behavior is nearly linear and an elastic model is appropriate, agreement between experimental data and the predicted values obtained by means of the equivalent width technique was excellent.
Evaluating mechanical properties of reinforced PC structural foam

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