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  2. Diffraction grating - Wikipedia

    en.wikipedia.org/wiki/Diffraction_grating

    A blazed diffraction grating reflecting only the green portion of the spectrum from a room's fluorescent lighting. For a diffraction grating, the relationship between the grating spacing (i.e., the distance between adjacent grating grooves or slits), the angle of the wave (light) incidence to the grating, and the diffracted wave from the grating is known as the grating equation.

  3. Fibre-reinforced plastic tanks and vessels - Wikipedia

    en.wikipedia.org/wiki/Fibre-reinforced_plastic...

    Dry media typically involved a dry, solid media (such as activated carbon) suspended in the middle of the vessel on a system of beam supports and grating. The media controls the concentration of a pollutant in the incoming gas via adsorption and absorption. These vessels have several design constraints. They must be designed for

  4. Fiberglass reinforced plastic grating - Wikipedia

    en.wikipedia.org/wiki/Fiberglass_reinforced...

    Fiberglass grating is often used when there are safety concerns due to liquids or oils on the floor and more corrosive environments needing chemical resistance. Many applications can benefit from fiberglass grating, such as: walkways, platforms, protective shielding, machinery housings, raised floors and stairways.

  5. Fiber Bragg grating - Wikipedia

    en.wikipedia.org/wiki/Fiber_Bragg_grating

    Typically the grating period is the same size as the Bragg wavelength, as shown above. For a grating that reflects at 1,500 nm, the grating period is 500 nm, using a refractive index of 1.5. Longer periods can be used to achieve much broader responses than are possible with a standard FBG. These gratings are called long-period fiber grating ...

  6. Blazed grating - Wikipedia

    en.wikipedia.org/wiki/Blazed_grating

    A special form of a blazed grating is the echelle grating. It is characterized by particularly large blaze angle (>45°). Therefore, the light hits the short legs of the triangular grating lines instead of the long legs. Echelle gratings are mostly manufactured with larger line spacing but are optimized for higher diffraction orders.

  7. Echelle grating - Wikipedia

    en.wikipedia.org/wiki/Echelle_grating

    An echelle grating (from French échelle, meaning "ladder") is a type of diffraction grating characterised by a relatively low groove density, but a groove shape which is optimized for use at high incidence angles and therefore in high diffraction orders. Higher diffraction orders allow for increased dispersion (spacing) of spectral features at ...

  8. Mayor Eric Adams’ key aide Winnie Greco has ‘disappeared ...

    www.aol.com/news/mayor-eric-adams-key-aide...

    A longtime confidante to Eric Adams who is under federal investigation has “disappeared” and is believed to be cooperating with authorities against the embattled New York City Mayor and other ...

  9. Grating - Wikipedia

    en.wikipedia.org/wiki/Grating

    The grating profile is the function of the reflectance or transmittance perpendicular to the lines. This function is generally a square wave, in that every transition between lines is abrupt. A grating can be defined by six parameters: Spatial frequency is the number of cycles occupying a particular distance (e.g. 10 line pairs per millimeter ...

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