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
... beam of light into the darkened room . Then get a small looking - glass , or hand - mirror , and a car- penter's steel square , or a sheet of stiff paper , having perfectly square corners . Hold ... LIGHT . CHAPTER III Reflection of Light.
... beam of light into the darkened room . Then get a small looking - glass , or hand - mirror , and a car- penter's steel square , or a sheet of stiff paper , having perfectly square corners . Hold ... LIGHT . CHAPTER III Reflection of Light.
Página 39
... mirror , so that the point or corner will touch the glass just where the sunlight falls upon it . Now one edge of 、 B FIG . 8 . A the square is brightly lighted by the sunbeam , and if ... beam reflected from the REFLECTION OF LIGHT . 39.
... mirror , so that the point or corner will touch the glass just where the sunlight falls upon it . Now one edge of 、 B FIG . 8 . A the square is brightly lighted by the sunbeam , and if ... beam reflected from the REFLECTION OF LIGHT . 39.
Página 40
... beam reflected from the mirror , that is marked M. To make this ... beam the beam of incidence , and we say that it travels in the direction of incidence , as shown by the arrow . The second beam , marked B , we call the beam of reflection ...
... beam reflected from the mirror , that is marked M. To make this ... beam the beam of incidence , and we say that it travels in the direction of incidence , as shown by the arrow . The second beam , marked B , we call the beam of reflection ...
Página 41
... mirror is at an angle of 45 degrees with the beam of incidence , and that the beam of reflection is at an angle of 90 degrees with the incident beam . Hence , if the mirror is tilted through a certain angle , the reflected beam is ...
... mirror is at an angle of 45 degrees with the beam of incidence , and that the beam of reflection is at an angle of 90 degrees with the incident beam . Hence , if the mirror is tilted through a certain angle , the reflected beam is ...
Página 42
... reflection from the lamplight or the light from the window shining through the hole marked A in the drawing . Get the needle - pointed awl and place it so that the ... light reflected from a mirror . The beam of incidence passes 42 LIGHT .
... reflection from the lamplight or the light from the window shining through the hole marked A in the drawing . Get the needle - pointed awl and place it so that the ... light reflected from a mirror . The beam of incidence passes 42 LIGHT .
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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