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 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 .
Página 29
... shining through all three cards . Next take a piece of thread and stretch it against the sides of the three cards , just as they stand , and immediately you see that they are exactly in line . The holes in the cards we know are at the ...
... shining through all three cards . Next take a piece of thread and stretch it against the sides of the three cards , just as they stand , and immediately you see that they are exactly in line . The holes in the cards we know are at the ...
Página 42
... shining through the hole marked A in the drawing . Get the needle - pointed awl and place it so that the point will just touch the spot of light in the black mirror , and then fasten the awl in this position with a piece of wax , as ...
... shining through the hole marked A in the drawing . Get the needle - pointed awl and place it so that the point will just touch the spot of light in the black mirror , and then fasten the awl in this position with a piece of wax , as ...
Página 52
... shining on the wall , and lighting the room with a pale , bluish - white glare . Move the hand quickly , so that the black cloth , the hand , and the white cuff , will pass in succession through the beam of light . Observe how the ...
... shining on the wall , and lighting the room with a pale , bluish - white glare . Move the hand quickly , so that the black cloth , the hand , and the white cuff , will pass in succession through the beam of light . Observe how the ...
Página 55
... shining upon dust and fine mist floating in the air , and we see them because each speck and particle reflects light in every direction . EXPERIMENT WITH JAR OF SMOKE . Fig . 13 represents a large , clean glass jar , such as one sees at ...
... shining upon dust and fine mist floating in the air , and we see them because each speck and particle reflects light in every direction . EXPERIMENT WITH JAR OF SMOKE . Fig . 13 represents a large , clean glass jar , such as one sees at ...
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Términos y frases comunes
12 inches angle of incidence appear Balfour Stewart beam of incidence beam of light beam of reflection beam of sunlight bit of paper black mirror black varnish block of wood bottle brackets bright candle centi centre cloth color color-top curious dark room diagram diameter direction disk distance dotted lines edge experiment falls fastened flask give green heliostat hole inch 25 millimetres inches 10 centimetres inches 15.2 centimetres inches 30.5 centimetres lamp lantern lens light enters light moves light passes look looking-glass magic lanterns marked metres mirror mucilage piece plano-convex lens point of incidence postal-card quicksilver rays red square reflected light refraction screen second drawing shade shadow shelf shining side slender beam slit smoke source of light spectrum spot of light square surface things top spin upright violet 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...