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
... turn freely in every direction . A hole , 1 inch ( 32 millimetres ) in diameter , is cut through the triangular piece of wood K , as shown by the dotted lines , and then this block is securely fastened to the back of the large board ...
... turn freely in every direction . A hole , 1 inch ( 32 millimetres ) in diameter , is cut through the triangular piece of wood K , as shown by the dotted lines , and then this block is securely fastened to the back of the large board ...
Página 24
... turn the handle to the right or left , and a round , horizontal beam of light will enter the room . When this is done , close all the windows , so as to make the room as dark as possible . To do this , shawls or blankets or enameled ...
... turn the handle to the right or left , and a round , horizontal beam of light will enter the room . When this is done , close all the windows , so as to make the room as dark as possible . To do this , shawls or blankets or enameled ...
Página 38
... Turn the mirror to the right , and the second or reflected beam of light moves round to the right . Turn the glass still more , turn off at a right angle , and the beam of light will and there will be a spot of light on the wall at that ...
... Turn the mirror to the right , and the second or reflected beam of light moves round to the right . Turn the glass still more , turn off at a right angle , and the beam of light will and there will be a spot of light on the wall at that ...
Página 45
... turn the mirror slowly round and you will soon find a position for the glass that will give six or more reflections . How does it happen that a common looking - glass can thus split a single sunbeam into several beams ? If you touch a ...
... turn the mirror slowly round and you will soon find a position for the glass that will give six or more reflections . How does it happen that a common looking - glass can thus split a single sunbeam into several beams ? If you touch a ...
Página 48
... ( as in former experi- ments ) will answer . Turn back your coat - sleeve , and , while standing near the beam of light , place the little mirror on the wrist , with one of the wax legs resting on 48 LIGHT . Experiment with Mirror on Pulse.
... ( as in former experi- ments ) will answer . Turn back your coat - sleeve , and , while standing near the beam of light , place the little mirror on the wrist , with one of the wax legs resting on 48 LIGHT . Experiment with Mirror on Pulse.
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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