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
... shown , and in the second drawing one is shown in profile , and they are 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 ) ...
... shown , and in the second drawing one is shown in profile , and they are 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 ) ...
Página 21
... shown at H. A hole , inch ( 12 milli- metres ) in diameter , is cut in the two ends , as marked by dotted lines at J ... shown by the dotted lines , and then this block is securely fastened to the back of the large board , as shown in ...
... shown at H. A hole , inch ( 12 milli- metres ) in diameter , is cut in the two ends , as marked by dotted lines at J ... shown by the dotted lines , and then this block is securely fastened to the back of the large board , as shown in ...
Página 22
... shown in the next drawing ( Fig . 2 ) , and the other mirror is adjusted to the sun at its various positions in the sky at different seasons of the year . Here is a diagram showing the position of the handle of the heliostat , and the ...
... shown in the next drawing ( Fig . 2 ) , and the other mirror is adjusted to the sun at its various positions in the sky at different seasons of the year . Here is a diagram showing the position of the handle of the heliostat , and the ...
Página 23
... from one mirror to the other . The position of the movable mirror is also shown in the positions it has at summer and winter solstices . # FIRST EXPERIMENT WITH THE HELIOSTAT . Choose a bright THE SOURCES OF LIGHT . 23.
... from one mirror to the other . The position of the movable mirror is also shown in the positions it has at summer and winter solstices . # FIRST EXPERIMENT WITH THE HELIOSTAT . Choose a bright THE SOURCES OF LIGHT . 23.
Página 28
... shown in thus fastened to a block , we shall have two blocks left . These we can lay aside , as we shall need them in another experiment . Now light the lamp , and place one block on the table , quite near the lamp . Look at the lamp ...
... shown in thus fastened to a block , we shall have two blocks left . These we can lay aside , as we shall need them in another experiment . Now light the lamp , and place one block on the table , quite near the lamp . Look at the lamp ...
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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