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aperture |
Also found in: Medical, Acronyms, Wikipedia, Hutchinson | 0.09 sec. |
apertureAn orifice. It often refers to an opening in which light is allowed to pass in optical systems such as cameras and lasers. See f-stop and numerical aperture. aperture Physics a. a usually circular and often variable opening in an optical instrument or device that controls the quantity of radiation entering or leaving it b. the diameter of such an opening How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The lenses are an aperture stop, reducing stray light in the spectrograph. |
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