Optics Without MathematicsSociety for promoting Christian knowledge, 1883 - 124 páginas |
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Página 22
... appears in six places , and if it is of suitable form will produce a beautiful hexagonal , that is six - cornered pattern , which may be changed in a moment by moving the object , the images at the same time moving in opposite ...
... appears in six places , and if it is of suitable form will produce a beautiful hexagonal , that is six - cornered pattern , which may be changed in a moment by moving the object , the images at the same time moving in opposite ...
Página 23
... appear as such in our diagrams . We shall be surprised perhaps at the difference which we shall find from having bent our plane mirror into a hollow one , even if ever so shallow , and the study will be very interesting . There will be ...
... appear as such in our diagrams . We shall be surprised perhaps at the difference which we shall find from having bent our plane mirror into a hollow one , even if ever so shallow , and the study will be very interesting . There will be ...
Página 44
... appears only about of its real depth ; which might be a source of danger ; and how a straight stick , or one's fingers , appear to be bent if they are put slanting into water . Now let us put another case . What will happen to a ray ...
... appears only about of its real depth ; which might be a source of danger ; and how a straight stick , or one's fingers , appear to be bent if they are put slanting into water . Now let us put another case . What will happen to a ray ...
Página 46
... appear considerably out of its place : and that in whatever direction the prism may be placed , edge up , down , or sideways , the final deviation will be the same , towards the thickest part , but following the position of the prism ...
... appear considerably out of its place : and that in whatever direction the prism may be placed , edge up , down , or sideways , the final deviation will be the same , towards the thickest part , but following the position of the prism ...
Página 63
... appear strange that divergent rays should be rendered parallel without changing the apparent size of the object due to its distance . But we must bear in mind that the pencils of rays diverging from every point in the object to the ...
... appear strange that divergent rays should be rendered parallel without changing the apparent size of the object due to its distance . But we must bear in mind that the pencils of rays diverging from every point in the object to the ...
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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.