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 38
... . Turn the glass still more , and the beam of light will turn off at a right angle , and there will be a spot of light on the wall at that side of the room . Now bring the carpenter's square 38 LIGHT . CHAPTER III Reflection of Light.
... . Turn the glass still more , and the beam of light will turn off at a right angle , and there will be a spot of light on the wall at that side of the room . Now bring the carpenter's square 38 LIGHT . CHAPTER III Reflection of Light.
Página 44
... wall above the window . This spot of light is a picture of the sun thrown by the mirror upon the wall . Hold the mirror at an oblique angle in the sunbeam , and direct the beam of reflection upon the opposite wall . Now there are ...
... wall above the window . This spot of light is a picture of the sun thrown by the mirror upon the wall . Hold the mirror at an oblique angle in the sunbeam , and direct the beam of reflection upon the opposite wall . Now there are ...
Página 45
... wall at 1. Part of the light goes through the glass to B , and here is another point of incidence , and a new beam of reflection is thrown through the glass to the wall at 2. If you REFLECTION OF LIGHT . 45.
... wall at 1. Part of the light goes through the glass to B , and here is another point of incidence , and a new beam of reflection is thrown through the glass to the wall at 2. If you REFLECTION OF LIGHT . 45.
Página 46
... wall at 2. If you look at the reflections on the wall , you will see that the second spot of light is the brightest . This comes from the quicksilver , for , as this is a better reflector than the glass , it sends out a brighter beam of ...
... wall at 2. If you look at the reflections on the wall , you will see that the second spot of light is the brightest . This comes from the quicksilver , for , as this is a better reflector than the glass , it sends out a brighter beam of ...
Página 47
... wall , and you will see that the first reflection from the glass is bright , and that the sec- ond , from the quicksilver at the back of the glass , is brighter still ; and that the others grow fainter and fainter till all the light is ...
... wall , and you will see that the first reflection from the glass is bright , and that the sec- ond , from the quicksilver at the back of the glass , is brighter still ; and that the others grow fainter and fainter till all the light is ...
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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...