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 12
... stars give us another light . In the house we start the lamps , and they give us another light . Out - of- doors , in the dusky meadows , we see the fire - flies dart- ing about , and giving out pale sparkles of yellow light as they fly ...
... stars give us another light . In the house we start the lamps , and they give us another light . Out - of- doors , in the dusky meadows , we see the fire - flies dart- ing about , and giving out pale sparkles of yellow light as they fly ...
Página 13
... stars is the sun . When it shines upon us , the other stars appear to be lost in the brighter light of this greater star , and we cannot see them . At night , when the sun is hid , these other stars appear . We look up into the sky and ...
... stars is the sun . When it shines upon us , the other stars appear to be lost in the brighter light of this greater star , and we cannot see them . At night , when the sun is hid , these other stars appear . We look up into the sky and ...
Página 14
... stars flash across the sky . These are not stars , but masses of matter that , flying through space about the earth , strike our atmosphere and suddenly blaze with light . The friction with the air as they dart through it 14 LIGHT .
... stars flash across the sky . These are not stars , but masses of matter that , flying through space about the earth , strike our atmosphere and suddenly blaze with light . The friction with the air as they dart through it 14 LIGHT .
Página 15
... stars , the fire , electricity , friction , and phosphorescent substances . We can study the light from all of them , but the light from the sun or a lamp will be the most con- venient . The light of the sun is the brightest and the ...
... stars , the fire , electricity , friction , and phosphorescent substances . We can study the light from all of them , but the light from the sun or a lamp will be the most con- venient . The light of the sun is the brightest and the ...
Página 28
... the table is level , you will see a tiny star or point of light shining through the holes in the two cards . With- out moving the eye , draw the third card into line between the others , and in a moment you will 28 LIGHT .
... the table is level , you will see a tiny star or point of light shining through the holes in the two cards . With- out moving the eye , draw the third card into line between the others , and in a moment you will 28 LIGHT .
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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...