Optics Without MathematicsSociety for promoting Christian knowledge, 1883 - 124 páginas |
Dentro del libro
Resultados 1-5 de 13
Página 19
... corresponding collection of apparent radiants behind it , which is called its image ; and so any number of actual objects whose rays are re- flected by the mirror will have as many corre- sponding images apparently on the other side of ...
... corresponding collection of apparent radiants behind it , which is called its image ; and so any number of actual objects whose rays are re- flected by the mirror will have as many corre- sponding images apparently on the other side of ...
Página 27
... corresponding with the object . These pleasing experiments with images require however larger mirrors than may come in our way , and we can show the principle on paper . We have set our lighted taper in front of the mirror . The wick is ...
... corresponding with the object . These pleasing experiments with images require however larger mirrors than may come in our way , and we can show the principle on paper . We have set our lighted taper in front of the mirror . The wick is ...
Página 29
... corresponding set of foci between a and z , or optically speaking , az is the image of AZ . But it is upside down ! This may seem strange , but you will find that it necessarily follows from the crossing of all the axes at C. And it is ...
... corresponding set of foci between a and z , or optically speaking , az is the image of AZ . But it is upside down ! This may seem strange , but you will find that it necessarily follows from the crossing of all the axes at C. And it is ...
Página 32
... a broad disc , composed of innumerable points , each one of which forms its image in the focus , so as to produce a corresponding disc there . The Convex Mirror is the reverse of the con- cave 32 OPTICS WITHOUT MATHEMATICS .
... a broad disc , composed of innumerable points , each one of which forms its image in the focus , so as to produce a corresponding disc there . The Convex Mirror is the reverse of the con- cave 32 OPTICS WITHOUT MATHEMATICS .
Página 40
... corresponding angle in the other medium , the same proportion of will be maintained between the sines of all other pairs of angles , from the smallest to the largest , that the ray can make with P in the two media , P being anywhere you ...
... corresponding angle in the other medium , the same proportion of will be maintained between the sines of all other pairs of angles , from the smallest to the largest , that the ray can make with P in the two media , P being anywhere you ...
Otras ediciones - Ver todas
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.