What people are saying - Write a review
We haven't found any reviews in the usual places.
PRINCIPAL SURFACES OF A LENs By P EveRITT
THE MEASUREMENT OF COLOUR By A C Jolly and A J BULL
METHOD of TRACING CAUSTIC CURVEs By ARCHIBALD STANLEY
11 other sections not shown
Other editions - View all
achromatic adjusted alloys angle aperture aplanatic light aplanatic pencil apparatus appear astigmatism axis beam binocular brightness calculations camera candle-power centimetres centre circle collimator colour coma concave correction curvature curve diagram diameter Diff diffracted light diffraction pattern dispersion distance effect equal Error experiments eye-piece focal length focal plane focal point focus focused foot-candles formula Fresnel Geometrical Optics glass holophane illumination incident instrument J. W. GoRDON lamp length of spectrum lens lenses magnification means measurements method mirror National Physical Laboratory object oblique Observatory observed obtained optical system ordinary parallel photographic photometer pinhole placed plate position practical prism Prof quartz radiate pattern radius refraction refractive index rotation Sand Casting scale seen shown shutter slide slit source of light spectacle spectra spectrographs spectrum AA spherical aberration surface telescope testing vertical visibility wave length white light