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IDEAL OPTICAL SYSTEMS
COMPUTATION OF CONSTANTS
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aberration absorption air film amplitude analyzer angle of incidence angular aperture astigmatism atomic axes axis bands collimator color components computed conjugate constant crystal curvature curve density determine deviation diffraction direction displacement distance electron emission energy entrance pupil equal equation exit pupil exposure eyepiece Fermat's principle field film finds flux focal length focus formula Fraunhofer diffraction frequency Fresnel Fresnel diffraction fringes given glass grating illuminance index of refraction intensity interference interferometer lens lenses magnetic magnification maxima maximum measured metals mirror Newton's rings Nicol prism object observed obtained optical system parallel phase difference photographic plane polarized plate polarized light principal plane prism radiation radius ratio rays reflection resolving power right angles rotation shown in Fig sin2 slit sodium spectra spectral lines spectrograph spectrometer spectrum spherical spherical aberration surface telescope theory thickness tion transmitted tube usually velocity vibration wave length width x-ray zero