An Elementary Treatise on Geometrical Optics |
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Page 2
... consider the portion of light which travels along some particular line in space apart from the rest ; such a portion of light is called a ray , and it will be supposed to have the form of an indefinitely slender cone , whose axis is the ...
... consider the portion of light which travels along some particular line in space apart from the rest ; such a portion of light is called a ray , and it will be supposed to have the form of an indefinitely slender cone , whose axis is the ...
Page 13
... consider the case in which the reflexions take place in a plane perpendicular to both mirrors . B e S A Let OA , OB be the plane mirrors and let PQRST ... be the ray of light which is reflected successively at Q , R , S , T ... 19 Let e ...
... consider the case in which the reflexions take place in a plane perpendicular to both mirrors . B e S A Let OA , OB be the plane mirrors and let PQRST ... be the ray of light which is reflected successively at Q , R , S , T ... 19 Let e ...
Page 23
... plane faces meeting in an edge , is called a prism . The inclination of the faces to each other is called the refracting angle of the prism . At present we shall only consider the path of rays 20-21 . ] 23 REFRACTION BY PRISMS .
... plane faces meeting in an edge , is called a prism . The inclination of the faces to each other is called the refracting angle of the prism . At present we shall only consider the path of rays 20-21 . ] 23 REFRACTION BY PRISMS .
Page 24
Robert Samuel Heath. At present we shall only consider the path of rays of light which pass through the prism in a plane perpen- dicular to both its faces , and therefore perpendicular to the edge of the prism ; we shall call such a ...
Robert Samuel Heath. At present we shall only consider the path of rays of light which pass through the prism in a plane perpen- dicular to both its faces , and therefore perpendicular to the edge of the prism ; we shall call such a ...
Page 27
... consider and as positive when they are measured from the normal towards the thicker part of the prism , so that ' and ' will be positive when they are measured from the normals to- wards the vertex . In the figure o , ☀ ' , † , y ' are ...
... consider and as positive when they are measured from the normal towards the thicker part of the prism , so that ' and ' will be positive when they are measured from the normals to- wards the vertex . In the figure o , ☀ ' , † , y ' are ...
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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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