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 19
... fastened together with cleats ; but , in this case , all the cracks must be close and tight . In the middle of this board , cut a round hole 5 inches ( 12.7 centi- metres ) in diameter , with its centre 8 inches from the bottom of the ...
... fastened together with cleats ; but , in this case , all the cracks must be close and tight . In the middle of this board , cut a round hole 5 inches ( 12.7 centi- metres ) in diameter , with its centre 8 inches from the bottom of the ...
Página 20
... the figure marked N you will see these two pieces fastened together . Fig . I is the most difficult piece of all . It should be made of ash or some hard wood . One end is square , and has a deep slot cut in it ; the rest is round 20 LIGHT .
... the figure marked N you will see these two pieces fastened together . Fig . I is the most difficult piece of all . It should be made of ash or some hard wood . One end is square , and has a deep slot cut in it ; the rest is round 20 LIGHT .
Página 21
... fastened to the back of the large board , as shown in the second drawing . An 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 ...
... fastened to the back of the large board , as shown in the second drawing . An 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 ...
Página 22
... fastened on with very heavy bands of rubber . This will enable us to take the glasses off when the instrument is not in use , and , if the elastic bands or rings are very strong , they will answer perfectly . The long mirror is to go on ...
... fastened on with very heavy bands of rubber . This will enable us to take the glasses off when the instrument is not in use , and , if the elastic bands or rings are very strong , they will answer perfectly . The long mirror is to go on ...
Página 24
... fasten it there so that it will be firm and steady . Before closing the window down upon it , move the larger mirror on its axis till it reflects a beam of light into the small mirror . Then turn the handle to the right or left , and a ...
... fasten it there so that it will be firm and steady . Before closing the window down upon it , move the larger mirror on its axis till it reflects a beam of light into the small mirror . Then turn the handle to the right or left , and a ...
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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