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 20
... edge of the shelf will be 16 inches ( 40.6 centimetres ) from the large board . On the outside edge of this shelf another board , 7 inches ( 17.8 centimetres ) wide , is placed upright , and secured with screws and small strips of wood ...
... edge of the shelf will be 16 inches ( 40.6 centimetres ) from the large board . On the outside edge of this shelf another board , 7 inches ( 17.8 centimetres ) wide , is placed upright , and secured with screws and small strips of wood ...
Página 29
... edge of the table as possible , and then bring one of the cards close to the lamp - chimney . Then change your seat , and repeat this experiment several times in different directions . Each time you will see exactly the same thing , no ...
... edge of the table as possible , and then bring one of the cards close to the lamp - chimney . Then change your seat , and repeat this experiment several times in different directions . Each time you will see exactly the same thing , no ...
Página 39
... edge of 、 B FIG . 8 . A the square is brightly lighted by the sunbeam , and if the mirror is placed at an angle of 45 degrees with the sunbeam , the other edge of the square is lighted up by the second beam . In this diagram , A is the ...
... edge of 、 B FIG . 8 . A the square is brightly lighted by the sunbeam , and if the mirror is placed at an angle of 45 degrees with the sunbeam , the other edge of the square is lighted up by the second beam . In this diagram , A is the ...
Página 43
... edge of this at the point of in- cidence , marked by the awl , and at the hole in the card where the beam of incidence enters , and marked A in the drawing . Draw a line between these two points and you have an angle formed by this line ...
... edge of this at the point of in- cidence , marked by the awl , and at the hole in the card where the beam of incidence enters , and marked A in the drawing . Draw a line between these two points and you have an angle formed by this line ...
Página 48
... edge and half- way between two corners . Place one at each of the opposite corners , so that the mirror will have three legs or supports placed in a triangle . Put the helio- stat in place , and bring a small beam of sunlight into the ...
... edge and half- way between two corners . Place one at each of the opposite corners , so that the mirror will have three legs or supports placed in a triangle . Put the helio- stat in place , and bring a small beam of sunlight into the ...
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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