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 20
... straight side , and with the circular part with a radius of 3 inches ( 7.6 centimetres ) . A hole , inch ( 12 millimetres ) in diameter , is made in this , as represented in the drawing , and then the half- round piece must be screwed ...
... straight side , and with the circular part with a radius of 3 inches ( 7.6 centimetres ) . A hole , inch ( 12 millimetres ) in diameter , is made in this , as represented in the drawing , and then the half- round piece must be screwed ...
Página 24
... straight this slender bar of light is ; it bends to neither the left nor right , but extends across the room in an absolutely straight line . As the sun moves , turn the handle of the heliostat to keep the light in place . Here is a ...
... straight this slender bar of light is ; it bends to neither the left nor right , but extends across the room in an absolutely straight line . As the sun moves , turn the handle of the heliostat to keep the light in place . Here is a ...
Página 25
... straight and tight , so that it just touches the beam of light throughout its length . Were you to try this experiment , you would see 2 that the thread would suddenly be lighted up through- out. THE SOURCES OF LIGHT . 25.
... straight and tight , so that it just touches the beam of light throughout its length . Were you to try this experiment , you would see 2 that the thread would suddenly be lighted up through- out. THE SOURCES OF LIGHT . 25.
Página 26
... straight , then the beam of light must be straight also . Here we discover something about light ; we learn that it has a certain property . Our experiment shows that light moves in straight lines . EXPERIMENT WITH CARDS AND A LAMP ...
... straight , then the beam of light must be straight also . Here we discover something about light ; we learn that it has a certain property . Our experiment shows that light moves in straight lines . EXPERIMENT WITH CARDS AND A LAMP ...
Página 29
... straight , or we could not have seen it . The cards are in a straight line , and the beam of light must also be straight . This experiment , like the first , shows us that there is a law or rule governing the movement of light , and ...
... straight , or we could not have seen it . The cards are in a straight line , and the beam of light must also be straight . This experiment , like the first , shows us that there is a law or rule governing the movement of light , and ...
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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