An Elementary Treatise on Geometrical Optics |
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Page ix
... power of a substance . 91. Irrationality of dispersion . 92 . Methods of correction for dispersion . 93-100 ... Magnifying power of an instrument . 124. Brightness of images . 125 , 126. Gauss ' method of finding the magnifying power ...
... power of a substance . 91. Irrationality of dispersion . 92 . Methods of correction for dispersion . 93-100 ... Magnifying power of an instrument . 124. Brightness of images . 125 , 126. Gauss ' method of finding the magnifying power ...
Page 86
... magnifying power of a thin double - convex lens , the radius of each surface being p , when the space between the lens and an object at distance a is filled with fluid of index μ ' , is given by 1 m α 2μ - μ ' - 1 = 1 " ρ 5. If ƒ be the ...
... magnifying power of a thin double - convex lens , the radius of each surface being p , when the space between the lens and an object at distance a is filled with fluid of index μ ' , is given by 1 m α 2μ - μ ' - 1 = 1 " ρ 5. If ƒ be the ...
Page 116
... magnifying power , it will be seen that we have ensured that two differently coloured rays diverging from the object will emerge parallel to each other . For if a , a ' be the inclinations to the axis of the original and final rays ...
... magnifying power , it will be seen that we have ensured that two differently coloured rays diverging from the object will emerge parallel to each other . For if a , a ' be the inclinations to the axis of the original and final rays ...
Page 129
... magnifying power ; and therefore , denoting the magnifying power by m , m = 1 + λ In convex lenses f is positive , and therefore the object will appear magnified ; in concave lenses f is negative , and therefore the object appears to be ...
... magnifying power ; and therefore , denoting the magnifying power by m , m = 1 + λ In convex lenses f is positive , and therefore the object will appear magnified ; in concave lenses f is negative , and therefore the object appears to be ...
Page 134
... power is often used as a reading glass , or for viewing the details of small objects . Such a glass may be used by ... magnifying power will be 1 + / f , where X is the least distance of distinct vision , and f the focal length of the ...
... power is often used as a reading glass , or for viewing the details of small objects . Such a glass may be used by ... magnifying power will be 1 + / f , where X is the least distance of distinct vision , and f the focal length of the ...
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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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