concave grating

0.03 sec.

concave grating [′kän‚kāv ′grād·iŋ]

(spectroscopy)

A reflection grating which both collimates and focuses the light falling upon it, made by spacing straight grooves equally along the chord of a concave spherical or paraboloid mirror surface. Also known as Rowland grating.

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Rowland grating

Rowland mounting

spectrograph

stigmatic concave grating

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