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 HORIZONTAL AT EQUI SCALE 8 SIZE ...
... 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 HORIZONTAL AT EQUI SCALE 8 SIZE ...
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 blocks as shown in the picture . When each card is 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 blocks as shown in the picture . When each card is thus fastened to a block , we shall have two blocks left . These we can lay ...
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Términos y frases comunes
17.8 centimetres angle of incidence Animals appear beam of light beam of reflection beam of sunlight beautiful black mirror block of wood blue BOND STREET bright candle centi centre CHARLES BARNARD circle cloth color color-top critical angle curious dark room diagram diameter direction disk distance dotted lines experiment falls fastened flask focus give glass gray paper heliostat hold hole Illustrations inch 25 millimetres inches 15.2 centimetres index of refraction lamp lantern light entering light passes look looking-glass magic lanterns metres mirror mucilage phenomena picture piece plano-convex lens point of incidence postal-card rays red square reflected light refraction represents ring screen shade shadow sheet shelf shine side slender beam slide slip slit smoke spot of light square stars straight surface things top spin tube wall water-lens wide window yellow
Pasajes populares
Página 3 - ... recommendation of this handy volume. The illustrations add to its interest and value, and its simplicity, both of design and execution, will commend it to beginners and others seeking information on the subject." From the Philadelphia Press. "It supplies a large number of simple and entertaining experiments on the phenomena of light, that any one can perform with materials that maybe found in any dwelling-house, or that maybe bought for a small sum in any town or city. This actually is philosophy...