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Wadsworth mounting |
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Wadsworth mounting [′wädz‚wərth ‚mau̇nt·iŋ]
(optics) A device in which light passes through a prism and is then reflected from a plane mirror; it has the effect of a constant-deviation prism. A mounting for a diffraction grating in which the slit is placed at the principal focus of a concave mirror, so that the light falling on the grating is in a parallel beam; it greatly reduces astigmatism. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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