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 22
... angle shown in the next drawing ( Fig . 2 ) , and the other mirror is adjusted to the sun at its various positions in the sky at different seasons of the year . Here is a diagram showing the position of the handle of the heliostat , and ...
... angle shown in the next drawing ( Fig . 2 ) , and the other mirror is adjusted to the sun at its various positions in the sky at different seasons of the year . Here is a diagram showing the position of the handle of the heliostat , and ...
Página 30
... angles in the sky ; and the third , to lay the courses of his ship in safety . Each employs these laws with cer- tainty and safety , because they are fixed and never change . EXPERIMENT WITH SHADOWS . This picture represents a sheet of ...
... angles in the sky ; and the third , to lay the courses of his ship in safety . Each employs these laws with cer- tainty and safety , because they are fixed and never change . EXPERIMENT WITH SHADOWS . This picture represents a sheet of ...
Página 38
... the glass still more , turn off at a right angle , and the beam of light will and there will be a spot of light on the wall at that side of the room . Now bring the carpenter's square 38 LIGHT . CHAPTER III Reflection of Light.
... the glass still more , turn off at a right angle , and the beam of light will and there will be a spot of light on the wall at that side of the room . Now bring the carpenter's square 38 LIGHT . CHAPTER III Reflection of Light.
Página 39
... angle of 45 degrees with the sunbeam , the other edge of the square is lighted up by the second beam . In this diagram , A is the beam of light from the heliostat , and B is the beam reflected from the REFLECTION OF LIGHT . 39.
... angle of 45 degrees with the sunbeam , the other edge of the square is lighted up by the second beam . In this diagram , A is the beam of light from the heliostat , and B is the beam reflected from the REFLECTION OF LIGHT . 39.
Página 40
... angle of incidence , and the angle between B and the line from 0 to X is the angle of reflection ; and the curious part of this matter is , that these two angles are always equal . Here they are both angles of 45 degrees . Move the ...
... angle of incidence , and the angle between B and the line from 0 to X is the angle of reflection ; and the curious part of this matter is , that these two angles are always equal . Here they are both angles of 45 degrees . Move the ...
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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