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 21
... block is securely fastened to the back of the large board , as shown in the second drawing . An opening of the same di- ameter , and having the same direction , is also cut through the board , and the movable piece , marked I , is put ...
... block is securely fastened to the back of the large board , as shown in the second drawing . An opening of the same di- ameter , and having the same direction , is also cut through the board , and the movable piece , marked I , is put ...
Página 22
... 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 .
... 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 .
Página 23
... block of wood marked K to have a slightly different shape , so that the hole through it will be in the middle . The dotted line marked " At Equi- nox " shows the path of the light from the sun , and AT EQUINOX .... HORIZONTAL .. SCALE 8 ...
... block of wood marked K to have a slightly different shape , so that the hole through it will be in the middle . The dotted line marked " At Equi- nox " shows the path of the light from the sun , and AT EQUINOX .... HORIZONTAL .. SCALE 8 ...
Página 26
... blocks placed in a row upon a flat , smooth table , and fastened to them are three postal - cards , so that they will stand upright . At the end of the table is a small lamp . This is all we need to perform an- other experiment , that ...
... blocks placed in a row upon a flat , smooth table , and fastened to them are three postal - cards , so that they will stand upright . At the end of the table is a small lamp . This is all we need to perform an- other experiment , that ...
Página 28
... blocks and place the slip over it , and tack them both down to the block . This will give us the cards and the picture . When each card is blocks as shown in thus fastened to a block , we shall have two blocks left . These we can lay ...
... blocks and place the slip over it , and tack them both down to the block . This will give us the cards and the picture . When each card is blocks as shown in thus fastened to a block , we shall have two blocks left . These we can lay ...
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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