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
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