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 16
... windows through which the sun shines . Close the shutters , curtains , and blinds , at all the win- dows save one . At this window draw the curtain down till it nearly closes the window , and then cover this open space with a strip of ...
... windows through which the sun shines . Close the shutters , curtains , and blinds , at all the win- dows save one . At this window draw the curtain down till it nearly closes the window , and then cover this open space with a strip of ...
Página 17
... window with a thick shawl or blanket , and , when the room is per- fectly dark , our slender beam of light will stand out clear , sharp , and bright . As soon as we begin to study this beam of light , we find two little matters that may ...
... window with a thick shawl or blanket , and , when the room is per- fectly dark , our slender beam of light will stand out clear , sharp , and bright . As soon as we begin to study this beam of light , we find two little matters that may ...
Página 19
... window where it is to be used is wide . Any boy who can use plane and saw can make this piece of work out of common inch - board , and , if you have no pieces so wide as that , it can be made of two or more pieces fastened together with ...
... window where it is to be used is wide . Any boy who can use plane and saw can make this piece of work out of common inch - board , and , if you have no pieces so wide as that , it can be made of two or more pieces fastened together with ...
Página 24
... window facing the south . Raise the sash and place the instrument in the window , and fasten it there so that it will be firm and steady . Before closing the window down upon it , move the larger mirror on its axis till it reflects a ...
... window facing the south . Raise the sash and place the instrument in the window , and fasten it there so that it will be firm and steady . Before closing the window down upon it , move the larger mirror on its axis till it reflects a ...
Página 38
... window . This is certainly a curious matter . Our beam of light enters the room , strikes the mirror , and then we appear to have another . It is the same beam , thrown back from the glass . This turning back of a beam of light we call ...
... window . This is certainly a curious matter . Our beam of light enters the room , strikes the mirror , and then we appear to have another . It is the same beam , thrown back from the glass . This turning back of a beam of light we call ...
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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