An Elementary Treatise on Geometrical Optics |
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Page 1
... eye ; it is these vibrations which we shall call light . 2. We know by experience that we can see through certain bodies , such as air , glass and water , but not through others , such as wood , stone and iron ; in other words light can ...
... eye ; it is these vibrations which we shall call light . 2. We know by experience that we can see through certain bodies , such as air , glass and water , but not through others , such as wood , stone and iron ; in other words light can ...
Page 19
... glass of water above the level of the eye ; the under surface of the water will appear very bright from the light internally reflected at it , and any object in the water will be seen by reflexion at the under surface more brilliantly ...
... glass of water above the level of the eye ; the under surface of the water will appear very bright from the light internally reflected at it , and any object in the water will be seen by reflexion at the under surface more brilliantly ...
Page 38
... eye , and at the other end are bits of coloured glass . The reflecting surfaces of the mirrors are inwards and they give six images symmetrically arranged of any bit of glass lying in the space between them . The kaleidoscope often ...
... eye , and at the other end are bits of coloured glass . The reflecting surfaces of the mirrors are inwards and they give six images symmetrically arranged of any bit of glass lying in the space between them . The kaleidoscope often ...
Page 43
... eye should be almost directly over it , so that all the rays may pass out in ... eye is placed to view any image formed by successive reflexions at two mirrors ... glass is viewed directly through each face in succession ; prove that the ...
... eye should be almost directly over it , so that all the rays may pass out in ... eye is placed to view any image formed by successive reflexions at two mirrors ... glass is viewed directly through each face in succession ; prove that the ...
Page 58
... glass has its spherical surface silvered ; light is incident from a luminous ... glass , 1 - 1 2μ = Aq AQ OA * 11. A ball of glass contains a concentric ... eye at any distance from the ball to be μ times greater than it really is ...
... glass has its spherical surface silvered ; light is incident from a luminous ... glass , 1 - 1 2μ = Aq AQ OA * 11. A ball of glass contains a concentric ... eye at any distance from the ball to be μ times greater than it really is ...
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An Elementary Treatise on Geometrical Optics (Classic Reprint) R. S. Heath No preview available - 2016 |
Common terms and phrases
achromatic angle of incidence aperture apparent magnitude astronomical telescope axis B₁ called caustic centre circle coloured concave concave lens conjugate foci converge convex lens corresponding Crown 8vo denote direction distinct vision Edited emerge parallel emergent ray equal equation extreme pencils eye-glass eye-lens eye-piece field of view final image focal length focal plane glass Hence illuminated inches incident ray inclined infinity instrument k₁ lenses linear magnitudes luminous magnifying power meet nodal points normal object object-glass object-mirror P. G. Tait pair of conjugate perpendicular placed plane mirror point Q position principal focus principal plane principal points prism pupil radii radius ray of light rays diverging reflected rays reflexion refracting surface refractive index respectively retina right angles second medium seen small mirror spectrum sphere spherical surface subtended suppose tangent theorem triangles vertex visual angle
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