Light: A Series of Simple, Entertaining, and Inexpensive Experiments in the Phenomena of Light, for the Use of Students of Every AgeD. Appleton, 1877 - 112 páginas |
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Página 34
... shade ; but , on removing C , E is fully illuminated . This shows that the quantity of light that fell on C spreads over four times the surface at the distance D , and nine times the surface at the distance E. Hence each one of the ...
... shade ; but , on removing C , E is fully illuminated . This shows that the quantity of light that fell on C spreads over four times the surface at the distance D , and nine times the surface at the distance E. Hence each one of the ...
Página 71
... open , and at the top is a round hole , 5 inches ( 12.7 centimetres ) in diameter . On this opening rests a hemispherical glass dish , made by cutting off the round top of a glass shade . This. REFRACTION OF LIGHT . 71 The Water-Lens.
... open , and at the top is a round hole , 5 inches ( 12.7 centimetres ) in diameter . On this opening rests a hemispherical glass dish , made by cutting off the round top of a glass shade . This. REFRACTION OF LIGHT . 71 The Water-Lens.
Página 72
... shade . This makes a thin glass bowl , 5 inches ( 14 centimetres ) in diam- eter , and it rests in the hole , partly above and partly below the top of the box . Inside the box two strips of wood are fastened , one on each side , at an ...
... shade . This makes a thin glass bowl , 5 inches ( 14 centimetres ) in diam- eter , and it rests in the hole , partly above and partly below the top of the box . Inside the box two strips of wood are fastened , one on each side , at an ...
Página 89
... shade will gather round it , showing where the water clings to the wood . A drop of camphor or of oil of coriander or oil of cin- namon , let fall into the water , will exhibit geometri- cal figures and strange motions on the screen ...
... shade will gather round it , showing where the water clings to the wood . A drop of camphor or of oil of coriander or oil of cin- namon , let fall into the water , will exhibit geometri- cal figures and strange motions on the screen ...
Página 94
... shades of colors that lie between them , are in the beam of sunlight . Decompose the light by means of a prism , and they stand side by side on the screen in a beauti- ful band or belt . Each color has a different degree of refraction ...
... shades of colors that lie between them , are in the beam of sunlight . Decompose the light by means of a prism , and they stand side by side on the screen in a beauti- ful band or belt . Each color has a different degree of refraction ...
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Términos y frases comunes
15.2 centimetres 551 BROADWAY ALEXANDER BAIN ALFRED MARSHALL angle angle of incidence appear beam of light beam of reflection beam of sunlight beautiful black mirror block of wood blue bright candle centi centre CHARLES BARNARD color color-top curious dark room diameter disk distance dotted lines experiment fastened flask focus FRANCIS GALTON give glass gray paper green heliostat hole Illustrations inch 25 millimetres inches 12.7 centimetres lamp lantern light entering light passes look looking-glass M. A. Cloth magic lanterns ments metres mirror mucilage phenomena picture piece plano-convex lens point of incidence postal-card Price Prof Professor rays red square reflected light refraction ring SCIENCE screen shade shadow sheet shine side slide slit smoke spot of light square stars surface things top spin tube University of Erlangen violet wall water-lens window yellow