Optics Without MathematicsSociety for promoting Christian knowledge, 1883 - 124 páginas |
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Página 13
... glass , crystals , jewels , all these are media ; and these media , from allowing the passage of light , are called transparent . If we except the empty spaces of the sky ( and there is a doubt even as to these ) , no media that we know ...
... glass , crystals , jewels , all these are media ; and these media , from allowing the passage of light , are called transparent . If we except the empty spaces of the sky ( and there is a doubt even as to these ) , no media that we know ...
Página 16
... glass , which may be set at any slope , and turned in all directions , is a complete illustration of what mathematicians mean by a plane ; only it must be capable of being extended , if necessary , to any conceivable distance . So when ...
... glass , which may be set at any slope , and turned in all directions , is a complete illustration of what mathematicians mean by a plane ; only it must be capable of being extended , if necessary , to any conceivable distance . So when ...
Página 17
... glass or metal . Pp is a perpendicular drawn from any point in it you please , AP a ray falling on that point at any conceivable angle ; then it will be は C reflected to B , so as to make the angles OPTICS WITHOUT MATHEMATICS . 17.
... glass or metal . Pp is a perpendicular drawn from any point in it you please , AP a ray falling on that point at any conceivable angle ; then it will be は C reflected to B , so as to make the angles OPTICS WITHOUT MATHEMATICS . 17.
Página 18
... glass or polished metal . A p B B C D These three are all the cases of regular re- flection that we shall mention now . But there is something to be said about each of them . First , about the plane mirror . If parallel rays , such as ...
... glass or polished metal . A p B B C D These three are all the cases of regular re- flection that we shall mention now . But there is something to be said about each of them . First , about the plane mirror . If parallel rays , such as ...
Página 19
... glass , which would seem to us a very surprising one , were we not so familiar with it . It is only a plane mirror , though too often a very imperfect one , from defects in material or workmanship . Every radiant in front of it is seen ...
... glass , which would seem to us a very surprising one , were we not so familiar with it . It is only a plane mirror , though too often a very imperfect one , from defects in material or workmanship . Every radiant in front of it is seen ...
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Términos y frases comunes
angles of incidence aperture axis beautiful called candle circle cloth boards colour concave lens concave mirror conjugate foci converging convex lens course crossing crystal crystalline lens curious curves dark direction dispersion distance Double Refraction edge equal angles equi-convex eye-lens Fcap feet focal image focal length form an image fraction front happens hole inches larger lenses look looking-glass magnifying power microscope minute moon Newtonian reflector NORTHUMBERLAND AVENUE object object-glass opposite optical parallel rays perfect perfectly picture plane mirror polarised position prism produce PROMOTING CHRISTIAN KNOWLEDGE properties of light proportion radiant radius rainbow ray passes reflected rays reflecting telescopes refraction retina reverse right angles seen shorter focus side sideways sine Sir EDMUND BECKETT spectrum speculum sphere spherical spherical aberration straight line suppose surface telescope thing tion turned undulations violet waves wonderful
Pasajes populares
Página 125 - ANCIENT HISTORY FROM THE MONUMENTS. This Series of Books is chiefly intended to illustrate the Sacred Scriptures by the results of recent Monumental Researches in the East. Fcap. 8vo, cloth boards, 2s. each. Assyria, -from the Earliest Times to the Fall of Nineveh. By the late GEORGE SMITH, Esq., of the British 'Museum.
Página 123 - The Stars in their Seasons. An Easy Guide to a Knowledge of the Star Groups, in 12 Maps.
Página 88 - Look upon the rainbow, and praise him that made it; very beautiful it is in the brightness thereof. It compasseth the heaven about with a glorious circle, and the hands of the Most High have bended it.
Página 123 - EVENINGS AT THE MICROSCOPE ; or, Researches among the Minuter Organs and Forms of Animal Life. By P. H. GOSSE, Esq., FRS A new edition, revised and annotated. Post 8vo Cloth boards 4 o FAN'S SILKEN STRING. By ANNETTE LYSTER, author of " Northwind and Sunshine,
Página 124 - CARE OF HEALTH. By the late EA PARKES, MD, FRS FOOD. By ALBERT J. BERNAYS, Professor of Chemistry at St. Thomas's Hospital. WATER, AIR, AND DISINFECTANTS. By W. NOEL HARTLEY, Esq., King's College. HEALTH AND OCCUPATION. By BW RICHARDSON, Esq., FRS, MD THE HABITATION IN RELATION TO HEALTH.