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
... 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 in glass vessels and then taken into ...
... 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 in glass vessels and then taken into ...
Página 20
... wood at the ends , as in the drawing . This shelf , with the wooden back , is marked D in the drawings . These things make the fixed parts of the heliostat , and we have next to make the movable parts , or the machinery whereby it can ...
... wood at the ends , as in the drawing . This shelf , with the wooden back , is marked D in the drawings . These things make the fixed parts of the heliostat , and we have next to make the movable parts , or the machinery whereby it can ...
Página 21
... wood K , as shown by the dotted lines , and then this block is securely fastened to the back of the large board , as ... wooden washer , 3 inches ( 8.7 centi- metres ) wide , as represented at M. This we slip over the long wooden handle ...
... wood K , as shown by the dotted lines , and then this block is securely fastened to the back of the large board , as ... wooden washer , 3 inches ( 8.7 centi- metres ) wide , as represented at M. This we slip over the long wooden handle ...
Página 22
... Wood , 50 cents ; labor , $ 1.75 ; glass , $ 1 ; iron nut , 5 cents ; brackets , 50 cents -total , $ 3.80 . When finished , the instrument should have a coat of shellac - varnish , and , when this is done , the mirrors may be put in ...
... Wood , 50 cents ; labor , $ 1.75 ; glass , $ 1 ; iron nut , 5 cents ; brackets , 50 cents -total , $ 3.80 . When finished , the instrument should have a coat of shellac - varnish , and , when this is done , the mirrors may be put in ...
Página 23
... wood marked K to have a slightly different shape , so that the hole through it will be in the middle . The dotted line marked " At Equi- nox " shows the path of the light from the sun , and AT EQUINOX .... HORIZONTAL .. SCALE 8 SIZE ...
... wood marked K to have a slightly different shape , so that the hole through it will be in the middle . The dotted line marked " At Equi- nox " shows the path of the light from the sun , and AT EQUINOX .... HORIZONTAL .. SCALE 8 SIZE ...
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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