grating

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grating

(grāt′ing)

In spectrophotometry, the element used in a monochromator that disperses white light into the visible spectrum. It is composed of finely etched lines in the reflecting material.

grating

A series of black and white parallel bars of equal width used to measure visual acuity, contrast sensitivity, and resolution of optical systems. The grating can be either square-wave (also called Foucault grating or Foucault pattern), in which the luminance across a bar is constant, or sine-wave, in which the luminance varies sinusoidally (Fig. G6). See cycle per degree; contrast sensitivity function.

Fig. G6 Square-wave grating

References in periodicals archive ?

It can be seen from Figure 15, three-axis force distribution curves of resistance-strain gauges and Fiber Bragg Grating and theoretical values are within the same axial range, the relative error of resistance-strain gauge and Fiber Bragg Grating can be calculated as

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Dynamic Interferometry Lithography on a Ti[O.sub.2] Photoresist Sol-Gel for Diffracting Deflector Module

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Diffraction gratings are used by college students to study light wave phenomena, such as interference.

Color images from flat lenses

4B schematically shows an output grating 402b having three angularly multiplexed holographic recordings.

The microsoft patents

Due to the subwavelength nature of this grating, this configuration could be considered as a pseudo metamaterial with effective refractive index equal to the combination of the metal and LC refractive indices.

Tunable Amplitude and Phase Modulation in Terahertz Regime Using Transverse Stratified Configuration

In spite of improvements in the design of cassava graters, there are no standards for the fabrication of grating surfaces and this affects interchangeability of the product.

FIELD MEASUREMENTS AND STATISTICAL ANALYSIS OF PERFORATED GRATING SURFACES FOR GRATING FRESH CASSAVA INTO MASH IN GHANA

After evaporating the acetone, a dried grating with spatially periodic template and nontemplate regions was obtained.

Circular Polarization and Wavelength Selective Gratings Based on Holographic Cholesteric Liquid Crystal Templates

This is in accordance with the expression for [kappa]: if the grating's length ([L.sub.grating]) is very small, [kappa] must be high:

Ultrashort Long-Period Fiber Gratings Inscribed on a Single-Mode Fiber for Torsion Sensing Applications

Fisher and Ludlow fabricates steel and aluminum bar grating products that are sold under the brand name Nucor Grating.

Fisher and Ludlow to Acquire Alabama Metal Industries' Bar Grating Assets

The new grating rig is used in conjunction with Stable Micro Systems' renowned TA.XTplus texture analyser and comprises a grating platform consisting of interchangeable grating faces, and a sample block holder which acts as a sample template and, during the test, holds the sample in place.