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 21
... opening of the same di- ameter , and having the same direction , is also cut through the board , and the movable piece , marked I , is put through this hole , as in the drawing . Final- ly , we want a wooden washer , 3 inches ( 8.7 ...
... opening of the same di- ameter , and having the same direction , is also cut through the board , and the movable piece , marked I , is put through this hole , as in the drawing . Final- ly , we want a wooden washer , 3 inches ( 8.7 ...
Página 22
... opening in the board , at O. This mirror stands at the angle shown in the next drawing ( Fig . 2 ) , and the other mirror is adjusted to the sun at its various positions in the sky at different seasons of the year . Here is a diagram ...
... opening in the board , at O. This mirror stands at the angle shown in the next drawing ( Fig . 2 ) , and the other mirror is adjusted to the sun at its various positions in the sky at different seasons of the year . Here is a diagram ...
Página 24
... opening in the heliostat . We have now a slender beam of light in a dark room . Walk about and study it from different sides . See how straight this slender bar of light is ; it bends to neither the left nor right , but extends across ...
... opening in the heliostat . We have now a slender beam of light in a dark room . Walk about and study it from different sides . See how straight this slender bar of light is ; it bends to neither the left nor right , but extends across ...
Página 50
... opening , and then , while facing a window or a bright lamp , look through the tube with one eye , and you will see a spot of light surrounded by a number of beautiful rings . Here we have another example of multiplied re- flection . 50 ...
... opening , and then , while facing a window or a bright lamp , look through the tube with one eye , and you will see a spot of light surrounded by a number of beautiful rings . Here we have another example of multiplied re- flection . 50 ...
Página 55
... openings in the clouds . These long bars are beams of sunlight shining upon dust and fine mist floating in the air , and we see them because each speck and particle reflects light in every direction . EXPERIMENT WITH JAR OF SMOKE . Fig ...
... openings in the clouds . These long bars are beams of sunlight shining upon dust and fine mist floating in the air , and we see them because each speck and particle reflects light in every direction . EXPERIMENT WITH JAR OF SMOKE . Fig ...
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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