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 |
Dentro del libro
Resultados 1-5 de 11
Página 17
... an end - view , and 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.
... an end - view , and 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
... marked C in both drawings . On the end of the brackets is placed a flat piece of board , 6 inches ( 16.5 centimetres ) wide and 14 inches ( 35.5 centi- metres ) long , or long enough to reach from one bracket to the other . This board ...
... marked C in both drawings . On the end of the brackets is placed a flat piece of board , 6 inches ( 16.5 centimetres ) wide and 14 inches ( 35.5 centi- metres ) long , or long enough to reach from one bracket to the other . This board ...
Página 20
... marked D in the drawings . These things make the fixed parts of the heliostat , and we have next to make the movable parts , or the machinery whereby it can be adjusted to the move- ment of the sun in the heavens . First , get out a ...
... marked D in the drawings . These things make the fixed parts of the heliostat , and we have next to make the movable parts , or the machinery whereby it can be adjusted to the move- ment of the sun in the heavens . First , get out a ...
Página 21
... marked by dotted lines at J , and through these holes an iron bolt and nut are fitted , so as to hold the circular piece , G , and yet allow it to turn freely in every direction . A hole , 1 inch ( 32 millimetres ) in diameter , is cut ...
... marked by dotted lines at J , and through these holes an iron bolt and nut are fitted , so as to hold the circular piece , G , and yet allow it to turn freely in every direction . A hole , 1 inch ( 32 millimetres ) in diameter , is cut ...
Página 22
... a line parallel with the axis of the earth , and the four dotted lines give its position when the heliostat is to be used in Boston , New York , Washington , and New Orleans . This also causes the block of wood marked K to have 22 LIGHT .
... a line parallel with the axis of the earth , and the four dotted lines give its position when the heliostat is to be used in Boston , New York , Washington , and New Orleans . This also causes the block of wood marked K to have 22 LIGHT .
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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