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 24
... cloth will be found useful inside the curtains and shutters . Then get a piece of cardboard , about 6 inches ( 15.2 centimetres ) square , and lay a five - cent piece in the centre , and , with a knife , cut a hole in the card just the ...
... cloth will be found useful inside the curtains and shutters . Then get a piece of cardboard , about 6 inches ( 15.2 centimetres ) square , and lay a five - cent piece in the centre , and , with a knife , cut a hole in the card just the ...
Página 50
... cloth , and fasten it down with mucilage , taking care to have the cloth square at the ends . Punch FIG . 11 . a hole in a postal - card with the sharp point of a pair of scissors , and with a knife make the ragged edges of the hole ...
... cloth , and fasten it down with mucilage , taking care to have the cloth square at the ends . Punch FIG . 11 . a hole in a postal - card with the sharp point of a pair of scissors , and with a knife make the ragged edges of the hole ...
Página 51
... cloth and take it to a dark room , where the heliostat will give us a slender beam of sunlight . If this is not con- venient , use a common beam of sunlight in a dark room , as in some of our former experiments . Hold the velvet in the ...
... cloth and take it to a dark room , where the heliostat will give us a slender beam of sunlight . If this is not con- venient , use a common beam of sunlight in a dark room , as in some of our former experiments . Hold the velvet in the ...
Página 52
... cloth does not reflect the light at all . Now move the hand , so that the spot of light will fall on the palm . See what a pretty , rosy glow of light falls on the wall ! This is the reflected light from the hand . The skin is rough ...
... cloth does not reflect the light at all . Now move the hand , so that the spot of light will fall on the palm . See what a pretty , rosy glow of light falls on the wall ! This is the reflected light from the hand . The skin is rough ...
Página 53
... cloth reflects light equally from every part . These drawings are intended to show how light is reflected from different surfaces . The first represents a smooth surface , like glass , that sends all the beams in one direction , because ...
... cloth reflects light equally from every part . These drawings are intended to show how light is reflected from different surfaces . The first represents a smooth surface , like glass , that sends all the beams in one direction , because ...
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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