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
... 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 screw two iron brackets , using ...
... 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 screw two iron brackets , using ...
Página 20
... diameter , is made in this , as represented in the drawing , and then the half- round piece must be screwed to the flat piece of wood we just cut out . In the figure marked N you will see these two pieces fastened together . Fig . I is ...
... diameter , is made in this , as represented in the drawing , and then the half- round piece must be screwed to the flat piece of wood we just cut out . In the figure marked N you will see these two pieces fastened together . Fig . I is ...
Página 21
... diameter . The square part must be large enough to slip over the half - circular piece , G , as is shown at H. A hole , inch ( 12 milli- metres ) in diameter , is cut in the two ends , as marked by dotted lines at J , and through these ...
... diameter . The square part must be large enough to slip over the half - circular piece , G , as is shown at H. A hole , inch ( 12 milli- metres ) in diameter , is cut in the two ends , as marked by dotted lines at J , and through these ...
Página 50
... diameter and 12 inches ( 30.5 centimetres ) long , and paint the outside with black varnish . this is not convenient , cover the tube with thick black cloth , and fasten it down with mucilage , taking care to have the cloth square at ...
... diameter and 12 inches ( 30.5 centimetres ) long , and paint the outside with black varnish . this is not convenient , cover the tube with thick black cloth , and fasten it down with mucilage , taking care to have the cloth square at ...
Página 71
... at the top is a round hole , 5 inches ( 12.7 centimetres ) in diameter . rests a hemispherical glass dish , On this opening made by cutting off the round top of a glass shade . This. REFRACTION OF LIGHT . 71 The Water-Lens.
... at the top is a round hole , 5 inches ( 12.7 centimetres ) in diameter . rests a hemispherical glass dish , On this opening made by cutting off the round top of a glass shade . This. REFRACTION OF LIGHT . 71 The Water-Lens.
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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...