A Treatise on Optics |
From inside the book
Results 1-5 of 57
Page 45
... radius mt , in a plane perpendicular to AF , is the smallest space through which the whole pencil passes . For a circular section of the pencil to the left of m is larger in consequence of the converging cone Ksk , and a cir- cular ...
... radius mt , in a plane perpendicular to AF , is the smallest space through which the whole pencil passes . For a circular section of the pencil to the left of m is larger in consequence of the converging cone Ksk , and a cir- cular ...
Page 47
... of the longitudinal aberration of the pencil , and its radius is one - fourth of Fr , the lateral aberration of the extreme ray . CHAPTER IV . FOCAL LINES OF SMALL OBLIQUE PENCILS - OF ABERRATION . 47 velocity of light,
... of the longitudinal aberration of the pencil , and its radius is one - fourth of Fr , the lateral aberration of the extreme ray . CHAPTER IV . FOCAL LINES OF SMALL OBLIQUE PENCILS - OF ABERRATION . 47 velocity of light,
Page 61
... radius OF = 1⁄2.CO . Join RO , and upon RT as dia- meter describe a circle , O ' its cen- tre ; therefore O'T = 1⁄2.TO . Let RP be the direction of the ray QR after reflexion . Join O'P , PT . R FO B Now L PO'T = 2PRT = 2QRO = 2TOF ...
... radius OF = 1⁄2.CO . Join RO , and upon RT as dia- meter describe a circle , O ' its cen- tre ; therefore O'T = 1⁄2.TO . Let RP be the direction of the ray QR after reflexion . Join O'P , PT . R FO B Now L PO'T = 2PRT = 2QRO = 2TOF ...
Page 62
... radius = OF = 3.00 describe a circle ; describe another circle on RT as diameter , so that its radius O'T TO . = RP the direction of QR after reflexion , join O'P 62 CAUSTICS BY REFLEXION.
... radius = OF = 3.00 describe a circle ; describe another circle on RT as diameter , so that its radius O'T TO . = RP the direction of QR after reflexion , join O'P 62 CAUSTICS BY REFLEXION.
Page 84
... radius of the sphere is infinite . If the surfaces of revolution do not meet , the additional surface which is required as a boundary to the lens round the edge , will be a cylindrical one , having its axis coincident with that of the ...
... radius of the sphere is infinite . If the surfaces of revolution do not meet , the additional surface which is required as a boundary to the lens round the edge , will be a cylindrical one , having its axis coincident with that of the ...
Other editions - View all
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
Popular passages
Page 299 - CAMPBELL : — THE NATURE OF THE ATONEMENT AND ITS RELATION TO REMISSION OF SINS AND ETERNAL LIFE. Fourth and Cheaper Edition, crown 8vo. 6s. "Among the first theological treatises of this generation.
Page 300 - AN ELEMENTARY TREATISE ON THE LUNAR THEORY, with a Brief Sketch of the Problem up to the time of Newton. Second Edition, revised. Crown 8vo. cloth. 5*. 6d. Hemming. — AN ELEMENTARY TREATISE ON THE DIFFERENTIAL AND INTEGRAL CALCULUS, for the Use; of Colleges and Schools.
Page 300 - FROST.— The First Three Sections of Newton's Principia. With Notes and Problems in illustration of the subject. By PERCIVAL FROST, MA late Fellow of St. John's College, Cambridge, and Mathematical Lecturer of Jesus College. Crown 8vo. cloth, 10s.
Page 302 - Crown 8vo. 7s. 6d. HOWARD. — The Pentateuch ; Or, the Five Books of Moses. Translated into English from the Version of the LXX. With Notes on its Omissions and Insertions, and also on the Passages in which it differs from the Authorized Version. By the Hon. HENRY HOWARD, DD Crown 8vo. GENESIS, One Volume, 8s. 6d. ; EXODUS AND LEVITICUS, One Volume, 10s. 6d. ; NUMBERS AND DEUTERONOMY, One Volume, 10s. 6d. HOZIER. — The Seven Weeks' War ; Its Antecedents and its Incidents.