A Treatise on Optics |
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Page v
... aberration , 12 , 13 ; Reflexion and refraction at a plane surface , 14-19 ; Discussion of the Geometrical focus and ... Aberration of small direct pencils Measure of aberration , 48 ; Formula for aberration after refraction at a plane ...
... aberration , 12 , 13 ; Reflexion and refraction at a plane surface , 14-19 ; Discussion of the Geometrical focus and ... Aberration of small direct pencils Measure of aberration , 48 ; Formula for aberration after refraction at a plane ...
Page vii
... aberration of lenses ; -Excentrical pencils 114 Aberration of a direct pencil , 129 ; form of a lens to produce minimum aberration for rays parallel , ―or not so , 130-132 ; examples , 133 ; Excen- trical pencil passing through one or ...
... aberration of lenses ; -Excentrical pencils 114 Aberration of a direct pencil , 129 ; form of a lens to produce minimum aberration for rays parallel , ―or not so , 130-132 ; examples , 133 ; Excen- trical pencil passing through one or ...
Page 6
... aberration of the ray Rq . If Ft be drawn perpendicular to the axis QA to meet Rq in t , it is sometimes convenient to distinguish Fq as the longi- tudinal aberration and Ft as the lateral aberration . 14. A pencil of parallel rays will ...
... aberration of the ray Rq . If Ft be drawn perpendicular to the axis QA to meet Rq in t , it is sometimes convenient to distinguish Fq as the longi- tudinal aberration and Ft as the lateral aberration . 14. A pencil of parallel rays will ...
Page 11
... . Now QRO △ qRO ; : . = QR QO Rq ( Euc . VI . 3 ) , Օզ " flexion or refraction ( produced if necessary ) cuts the REFLEXION AT A SPHERICAL SURFACE . 11 11; Def of Geometrical and Principal Focus, focal length, aberration,
... . Now QRO △ qRO ; : . = QR QO Rq ( Euc . VI . 3 ) , Օզ " flexion or refraction ( produced if necessary ) cuts the REFLEXION AT A SPHERICAL SURFACE . 11 11; Def of Geometrical and Principal Focus, focal length, aberration,
Page 11
... aberration of the ray Rq . If Ft be drawn perpendicular to the axis QA to meet Rq in t , it is sometimes convenient to distinguish Fq as the longi- tudinal aberration and Ft as the lateral aberration . 14. A pencil of parallel rays will ...
... aberration of the ray Rq . If Ft be drawn perpendicular to the axis QA to meet Rq in t , it is sometimes convenient to distinguish Fq as the longi- tudinal aberration and Ft as the lateral aberration . 14. A pencil of parallel rays will ...
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Common terms and phrases
aberration achromatism angle of incidence axis QA bright centre circle of least coincides colours concave conical surfaces convex lens cos² Crown 8vo cuts the axis deviation diameter direct pencil distance emergent equation excentrical eye-glass eye-piece Fcap field of view fixed lines focal length geometrical focus Hence illumination image formed incident directly incident pencil index of refraction intersection lenses luminous point magnifying power medium object object-glass parallel rays passes pencil of parallel pencil of rays pencil whose axis perpendicular plane surface point of incidence point q position primary plane principal focus principal plane prism radius rays incident reflected or refracted reflected pencil reflexion or refraction refracted rays refracting angle refracting surface refractive index shew small oblique pencil small pencil spectrum sphere spherical reflector spherical surface subtends supposed telescope thin lens v₁ v₂ αμ
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