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 40
... incidence , and we say that it travels in the direction of incidence , as shown by the arrow . The second beam , marked B , we call the beam of reflection , and the course it takes we call the direction of reflection . The point marked ...
... incidence , and we say that it travels in the direction of incidence , as shown by the arrow . The second beam , marked B , we call the beam of reflection , and the course it takes we call the direction of reflection . The point marked ...
Página 41
... incidence , and that the beam of reflection is at an angle of 90 degrees with the incident beam . Hence , if the mirror is tilted through a certain angle , the reflected beam is tilted through twice this angle . For instance , if the ...
... incidence , and that the beam of reflection is at an angle of 90 degrees with the incident beam . Hence , if the mirror is tilted through a certain angle , the reflected beam is tilted through twice this angle . For instance , if the ...
Página 42
... in this position with a piece of wax , as represented in the picture . You will readily see that this experiment is the same as the last . Again we have a beam of light reflected from a mirror . The beam of incidence passes 42 LIGHT .
... in this position with a piece of wax , as represented in the picture . You will readily see that this experiment is the same as the last . Again we have a beam of light reflected from a mirror . The beam of incidence passes 42 LIGHT .
Página 43
... incidence passes through the postal - card at A and finds its point of incidence on the mirror , and the beam of reflection extends from the point of incidence to the second card at B. Take a sheet of stiff paper 10 inches ( 25.4 centi ...
... incidence passes through the postal - card at A and finds its point of incidence on the mirror , and the beam of reflection extends from the point of incidence to the second card at B. Take a sheet of stiff paper 10 inches ( 25.4 centi ...
Página 44
... incidence to either of the holes on the cards , and then compare the angles thus found , and in each case they will be exactly alike . Take out another block and try it again , and you will reach the same result . These experiments show ...
... incidence to either of the holes on the cards , and then compare the angles thus found , and in each case they will be exactly alike . Take out another block and try it again , and you will reach the same result . These experiments show ...
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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