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Refraction Experiments with a Prism
Course of Rays refracted through a Curved Surface
65 other sections not shown
aberration adjusted aperture apparatus Apparatus.—A appear astigmatism axis beam bi-prism block brass Canada balsam centre circle coincide collimator colour concave lens concave mirror convergent convex lens cross-wire crystal dark determined diameter diffraction direction disc distance easily edge equal experiment eye-piece film focal length focal plane focus focussed fringes front glass plate grating half hole horizontal illuminated image formed inches incident insert knitting needle lenses liquid Lloyd's mirror magnification measured method mica microscope millimetre mounted moved Newton's rings nicol nicol prism object observer obtained optical bench ordinary pair paper pass patch perpendicular piece placed plane mirror polarised position prism produced radius of curvature rays readings reflected refractive index right angles rings rotated scale screen screw seen side silvered slit sodium flame spectrometer spectrum spherical spherical aberration stand straight edge surface telescope thickness tube vertical wave wave-length white light width wire