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 17
... we can now make one by simply following these few directions : The part marked A in the two draw- ings is a piece of pine board , 23 inches ( 58.4 centi- M A B N EQUINOX SUN AT ------------ O 1 THE SOURCES OF LIGHT . 17.
... we can now make one by simply following these few directions : The part marked A in the two draw- ings is a piece of pine board , 23 inches ( 58.4 centi- M A B N EQUINOX SUN AT ------------ O 1 THE SOURCES OF LIGHT . 17.
Página 19
... inches ( 12.7 centi- metres ) in diameter , with its centre 8 inches from the bottom of the board . In the first drawing this hole can be seen at B , and in the second drawing it is shown by dotted lines at B. On one side of the board ...
... inches ( 12.7 centi- metres ) in diameter , with its centre 8 inches from the bottom of the board . In the first drawing this hole can be seen at B , and in the second drawing it is shown by dotted lines at B. On one side of the board ...
Página 20
... inches ( 26.7 centimetres ) long , 61 inches ( 16 centimetres ) wide , and 1 inch ( 12 milli- metres ) thick . Then make a flat , half - round piece , shaped like the figure marked G. This piece must be inch ( 7 millimetres ) thick , 5 ...
... inches ( 26.7 centimetres ) long , 61 inches ( 16 centimetres ) wide , and 1 inch ( 12 milli- metres ) thick . Then make a flat , half - round piece , shaped like the figure marked G. This piece must be inch ( 7 millimetres ) thick , 5 ...
Página 21
... inches square . This makes all the movable parts of the heliostat , and , when we have put in the mirrors , the instrument is finished and ready for use . We must have two mirrors , one 6 inches ( 15.2 centimetres ) square and one 10 ...
... inches square . This makes all the movable parts of the heliostat , and , when we have put in the mirrors , the instrument is finished and ready for use . We must have two mirrors , one 6 inches ( 15.2 centimetres ) square and one 10 ...
Página 24
... inches ( 15.2 centimetres ) square , and lay a five - cent piece in the centre , and , with a knife , cut a hole in the card just the size of the coin . Then fasten this , with pins or tacks , over the opening in the heliostat . We have ...
... inches ( 15.2 centimetres ) square , and lay a five - cent piece in the centre , and , with a knife , cut a hole in the card just the size of the coin . Then fasten this , with pins or tacks , over the opening in the heliostat . We have ...
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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