An Elementary Treatise on Geometrical Optics ... |
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Page 130
... spectrum , assumes the position nearest to that occupied by the white patch when the prism was away . Now , we know , that if the refractive index of a ray be given , the minimum deviation through a prism of a known angle is given ...
... spectrum , assumes the position nearest to that occupied by the white patch when the prism was away . Now , we know , that if the refractive index of a ray be given , the minimum deviation through a prism of a known angle is given ...
Page 132
... spectrum , that is a spectrum in which the colours are unmixed . 109. Instead of placing the eye close to the prism 132 ON DISPERSION AND ACHROMATIC COMBINATIONS .
... spectrum , that is a spectrum in which the colours are unmixed . 109. Instead of placing the eye close to the prism 132 ON DISPERSION AND ACHROMATIC COMBINATIONS .
Page 133
... spectrum VR , and will form a real inverted image of VR , which can be viewed by the eye - piece , and measurements of the lengths of its different parts made by the method explained in Art . 94 . Instead of using the eye - piece , a ...
... spectrum VR , and will form a real inverted image of VR , which can be viewed by the eye - piece , and measurements of the lengths of its different parts made by the method explained in Art . 94 . Instead of using the eye - piece , a ...
Page 134
... spectrum it is essential to use a large number of prisms . It is clear however that the diverging pencil of light of any particular colour , which comes originally from the slit , would in this case have attained a considerable breadth ...
... spectrum it is essential to use a large number of prisms . It is clear however that the diverging pencil of light of any particular colour , which comes originally from the slit , would in this case have attained a considerable breadth ...
Page 136
... spectrum is obtained from the sun's light , it is found that it is not a continuous band of light , but that it has a very large number of interruptions , or places where the light does not exist . If the spectrum be formed from a slit ...
... spectrum is obtained from the sun's light , it is found that it is not a continuous band of light , but that it has a very large number of interruptions , or places where the light does not exist . If the spectrum be formed from a slit ...
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Common terms and phrases
2nd edition 3rd edition 4th edition Aeneid angle of incidence astronomical telescope axis Book Camb Cambridge centre concave convex lens cos² Crown 8vo Demy 8vo diameter direction distance diverge emergence English equal eye-glass eye-lens eye-piece F. A. PALEY Fcap Fellow of St focal length foci formula French geometrical focus glass Grammar Greek Hence illumination image formed inches incident ray index of refraction J. H. FREESE John's College last Article late Fellow Latin lenses LL.D luminous point magnifying power Mathematical minimum deviation object object-glass obliquely parallel rays pass pencil pencil of light pencil of parallel perpendicular placed portion primary plane prism Professor radius ray of light reflected ray reflecting surface refracted ray refraction or reflection refractive index revised School screen Small post 8vo spectrum sphere spherical surface Translated triangle Trinity College v₁ vertex whence
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