 | William Lees - Heat - 1873 - 150 pages
...perpendicular to the reflecting surface. The law of regular reflection, therefore, may be expressed thus: the angle of incidence is always equal to the angle of reflection, the incident and the reflected rays being in the same plane, which is perpendicular to the reflecting... | |
 | Science - 1874 - 806 pages
...laws : 1. The incident ray, the normal, and the reflected ray, are always in the same plane; and, 2. The angle of incidence is always equal to the angle of reflection. FIG. 8. IMAGE OF A CANDLE IN A LOOKING-GLASS. This is an example of what is known as regular reflection,... | |
 | David Ames Wells - Physics - 1875 - 464 pages
...mcident Billiards ? an d reflected motion, which he has learned by long-continued experience, viz., that the angle of incidence is always equal to the angle of reflection, and that action and reaction are equal and contrary. An illustration of the skillful reflection of... | |
 | Sidney Augustus Norton - Physics - 1875 - 304 pages
...incidence; the angle PNR is called the angle of reflection. In the reflection of perfectly elastic bodies, the angle of incidence is always equal to the angle of reflection. When either body is not perfectly elastic, the component NG will be proportionally smaller; hence,... | |
 | David Ames Wells - Physics - 1879 - 552 pages
...1 1 ia rds and bagatelle depends upon his dexterous application of the principles of incident viz., that the angle of incidence is always equal to the angle of reflection, and that action and re-action are equal and contrary. An illustration of the skillful reflection of... | |
 | Amusements - 1882 - 1048 pages
...RADIANT HEAT. When radiant heat is reflected it obeys precisely the same laws as light or sound, for the angle of incidence is always equal to the angle of reflection (p. 439). Thus it would appear that there is some reason as well as convenience in having a huge tin... | |
 | Gaston Tissandier - 1882 - 830 pages
...reflected ray di forms the same angle with the perpendicular as the incident ray ri ; in other words, the angle of incidence is always equal to the angle of reflection, and these rays are per- Fig- 85.— Angle of pendicular to the plane from which they are reflected.... | |
 | Tristram J. Ellis - Artists' materials - 1883 - 204 pages
...point above. This gives the place of the reflection. The great and inviolable law of reflection is, that the angle of incidence is always equal to the angle of reflection. Here is a little diagram that will explain it (Fig. 28.) To the left a tower is represented standing... | |
 | Engineering - 1891 - 592 pages
...DE being parallel to each other, Angle RA D1 = Angle RED, and Angle D1 AB = Angle ABE = We have seen that the angle of incidence is always equal to the angle of reflection, therefore Angle RAP = PAB, or a = a1, Angle ABF = FBE, or b = b1, and Angle ZI' A P1 = /» A -B = b... | |
 | Edward Richard Shaw - Physics - 1891 - 354 pages
...ray makes with the perpendicular is called the angle of reflection. When rays of light are reflected, the angle of incidence is always equal to the angle of reflection,. DIFFUSION AND ABSORPTION. Experiment 147. — Procure a piece of looking-glass, two pieces of tin,... | |
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The disciples of Plato contributed not a little to the advancement of optics, by the important discovery they made, that light emits itself in straight lines, and that the angle of incidence is always equal to the angle of reflection. Plato terms colours... 
