Light: A Series of Simple, Entertaining, and Inexpensive Experiments in the Phenomena of Light : for the Use of Students of Every AgeD. Appleton and Company, 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
... 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- A SUN AT EQUINOX T 8 IN . 0 D THE SOURCES OF LIGHT . 17.
... 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- A SUN AT EQUINOX T 8 IN . 0 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 must be screwed to the flat piece of wood we just cut out . In the figure marked N you will see these two pieces fastened together . Fig . I is the most difficult piece of all . It should be made of ash or some hard wood . One end ...
... piece must be screwed to the flat piece of wood we just cut out . In the figure marked N you will see these two pieces fastened together . Fig . I is the most difficult piece of all . It should be made of ash or some hard wood . One end ...
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Términos y frases comunes
551 Broadway angle of incidence appear Balfour Stewart beam of light beam of reflection beam of sunlight beautiful black mirror block of wood blue bright candle centi centre circle cloth color color-top curious dark room diagram diameter direction disk distance dotted lines experiment falls fastened flask focus give gray paper green heliostat hold hole inch 25 millimetres inches 12.7 centimetres index of refraction lamp lantern lens light entering light moves light passes look looking-glass magic lanterns ment metres mirror mucilage picture piece plano-convex lens point of incidence postal-card Prof rays red square reflected light refraction represents ring screen shade shadow sheet shelf shine side slender beam slide slit smoke source of light spot of light square stars straight surface things top spin total reflection violet wall water-lens window yellow