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 11
... means to put certain things in certain relations with other things , for the purpose of finding out how they affect each other . Experi- menting is thus a finding out . It is the design of this book to tell you something about ...
... means to put certain things in certain relations with other things , for the purpose of finding out how they affect each other . Experi- menting is thus a finding out . It is the design of this book to tell you something about ...
Página 17
... means of keep- ing it in one place all day . An instrument that will enable us to do this , and that can be adjusted to the position of the sun in the sky at all seasons of the year and every hour of the day , may be readily made , and ...
... means of keep- ing it in one place all day . An instrument that will enable us to do this , and that can be adjusted to the position of the sun in the sky at all seasons of the year and every hour of the day , may be readily made , and ...
Página 37
... means of such an experiment we can find out how much light any lamp gives . In this case , we find one lamp gives ... mean by this expression . They mean that the lamp has a photometric value of so many candles , or gives a light equal ...
... means of such an experiment we can find out how much light any lamp gives . In this case , we find one lamp gives ... mean by this expression . They mean that the lamp has a photometric value of so many candles , or gives a light equal ...
Página 76
... means of lenses of glass or water we can spread out a beam of light , gather a whole bundle of rays into a single focus - we can make distant objects ap- pear near , make small things appear large , and large things appear small ...
... means of lenses of glass or water we can spread out a beam of light , gather a whole bundle of rays into a single focus - we can make distant objects ap- pear near , make small things appear large , and large things appear small ...
Página 94
... means of a prism , and they stand side by side on the screen in a beauti- ful band or belt . Each color has a different degree of refraction , the refraction increasing from the red to the violet ; and thus they meet the screen at ...
... means of a prism , and they stand side by side on the screen in a beauti- ful band or belt . Each color has a different degree of refraction , the refraction increasing from the red to the violet ; and thus they meet the screen at ...
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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