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 15
... piece of salted fish or chip of decayed wood will sometimes give a pale , cold light in the night ; and certain chemi- cals , like Bologna phosphorus and compounds of sul- phur , lime , strontium , and barium , if placed in the sunlight ...
... piece of salted fish or chip of decayed wood will sometimes give a pale , cold light in the night ; and certain chemi- cals , like Bologna phosphorus and compounds of sul- phur , lime , strontium , and barium , if placed in the sunlight ...
Página 16
... this paper about the size of a five - cent piece , and at once you will have a slender beam of sunlight entering the hole in the paper and falling on the floor . Close the upper part of the window 16 LIGHT . The Heliostat.
... this paper about the size of a five - cent piece , and at once you will have a slender beam of sunlight entering the hole in the paper and falling on the floor . Close the upper part of the window 16 LIGHT . The Heliostat.
Página 17
... an end - view , and we can now make one by simply following these few directions : The part marked A in the two draw- ings is a piece of pine board , 23 inches ( 58.4 centi- M A Η 2 3 4 5 6 7 D THE SOURCES OF LIGHT . 17.
... an end - view , and we can now make one by simply following these few directions : The part marked A in the two draw- ings is a piece of pine board , 23 inches ( 58.4 centi- M A Η 2 3 4 5 6 7 D THE SOURCES OF LIGHT . 17.
Página 19
... 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 cleats ; but , in this case , all the cracks must be close and tight . In the middle of ...
... 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 cleats ; but , in this case , all the cracks must be close and tight . In the middle of ...
Página 20
... piece , This piece must inches ( 14 centi- These things make the fixed parts of the heliostat , and we have next to make the movable parts , or the machinery whereby it can be adjusted to the move- ment of the sun in the heavens . First ...
... piece , This piece must inches ( 14 centi- These things make the fixed parts of the heliostat , and we have next to make the movable parts , or the machinery whereby it can be adjusted to the move- ment of the sun in the heavens . First ...
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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...