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 38
... hand - mirror , and a car- penter's steel square , or a sheet of stiff paper , having perfectly square corners . Hold the mirror in the beam of light . At once you see there are two beams of sunlight , one from the heliostat and another ...
... hand - mirror , and a car- penter's steel square , or a sheet of stiff paper , having perfectly square corners . Hold the mirror in the beam of light . At once you see there are two beams of sunlight , one from the heliostat and another ...
Página 44
... hand - mirror into this beam of light , and the beam of reflection will make a round spot of sun- light on the wall above the window . This spot of light is a picture of the sun thrown by the mirror upon the wall . Hold the mirror at an ...
... hand - mirror into this beam of light , and the beam of reflection will make a round spot of sun- light on the wall above the window . This spot of light is a picture of the sun thrown by the mirror upon the wall . Hold the mirror at an ...
Página 48
... hand till it is soft , and then make three small pellets about the size of a pea . Put one of these on the back of the little mirror , near the edge and half- way between two corners . Place one at each of the opposite corners , so that ...
... hand till it is soft , and then make three small pellets about the size of a pea . Put one of these on the back of the little mirror , near the edge and half- way between two corners . Place one at each of the opposite corners , so that ...
Página 51
... hand between the fingers , and so as to leave the palm of the hand clear . Turn back the coat - sleeve so as to expose part of the white cuff , and then bring the velvet into the beam of sunlight . You will observe nothing in particular ...
... hand between the fingers , and so as to leave the palm of the hand clear . Turn back the coat - sleeve so as to expose part of the white cuff , and then bring the velvet into the beam of sunlight . You will observe nothing in particular ...
Página 52
... hand , so that the spot of light will fall on the palm . See what a pretty , rosy glow of light falls on the wall ! This is the reflected light from the hand . The skin is rough , and the light is diffused and scattered about , and ...
... hand , so that the spot of light will fall on the palm . See what a pretty , rosy glow of light falls on the wall ! This is the reflected light from the hand . The skin is rough , and the light is diffused and scattered about , and ...
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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...