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" ... the refracted ray ; and the acute angles which they make with the normal to the surface of separation at the point of incidence, are called the angles of incidence and refraction, respectively. The angles of incidence and refraction lie always in... "
An Elementary Text-book of Physics: Light - Page 120
by Robert Wallace Stewart - 1909
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A Treatise on the Higher Plane Curves: Intended as a Sequel to A Treatise on ...

George Salmon - Conic sections - 1852 - 338 pages
...triangles equal to the given ratio OA : OR. The ratio RA : RM is equal to sinRBA : sinRBM ; but RBA = PRA, the angle which the incident ray makes with the normal to the surface, and RBM = PRM, the angle which the refracted ray makes with the same normal; hence the ratio RA : RM...
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Introductory Course of Natural Philosophy for the Use of Schools and Academies

Adolphe Ganot - Physics - 1865 - 518 pages
...ray meets the reflecting surface, is called the point of incidence ; thus, D is a point of incidence. The angle which the incident ray makes with the normal to the reflecting surface at the point of incidence, is called the angle . of incidence; thus, CD A is an...
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A Treatise on the Higher Plane Curves: Intended as a Sequel to A Treatise on ...

George Salmon - Curves, Algebraic - 1879 - 424 pages
...triangles equal to the given ratio 0 A : OR. The ratio RA : RM is equal to sin RBA : sinRBM; but RBA = PRA, the angle which the incident ray makes with the normal to the curve, and RBM=PRM, the angle which the refracted ray makes with the same normal ; hence the ratio...
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A Treatise on Geometrical Optics

Robert Samuel Heath - Geometrical optics - 1887 - 384 pages
...on the new medium are called the incident and refracted rays; and the acute angles which they make with the normal to the surface of separation at the point of incidence, are called the angles of incidence and refraction, respectively. The angles of incidence and refraction...
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An Elementary Treatise on Geometrical Optics

Robert Samuel Heath - Geometrical optics - 1888 - 250 pages
...on the new medium are called the incident and refracted rays; and the acute angles which they make with the normal to the surface of separation at the point of incidence, are called the angles of incidence and refraction, respectively. The angles of incidence and refraction...
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Light for Students

Edwin Edser - Light - 1902 - 604 pages
...rays, together with the normal to the surface, lie in a single plane, termed the Plane of Incidence. The angle which the incident ray makes with the normal to the surface is termed the Angle of Incidence. Now, light-waves in which the displacements are perpendicular to...
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A Syllabus of a Course in Elementary Physics

Frederick E. Sears - 1905 - 52 pages
...object distance of object from mirror. REFRACTION OF LIGHT. Definitions : The angle of incidence is the angle which the incident ray makes with the normal to the surfaces, drawn through the point at which the ray meets the surfaces. The angle of refraction is the...
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Physical Measurements in Sound, Light, Magnetism and Electricity

Ralph S. Minor - Physical measurements - 1906 - 268 pages
...n = 1 + \ ; 3 — I (*) This determines the refractive index in terms of the angle of the prism and the angle which the incident ray makes with the normal to the surface. Derive equation (2). For the case of grazing incidence, the direction being reversed, the angle i will...
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The Refractive and Motor Mechanism of the Eye

William Norwood Souter - Eye - 1910 - 374 pages
...incidence bears a constant ratio to the sine of the angle of refraction. The angle of incidence is the angle which the incident ray makes with the normal to the surface (NSR) and the angle of refraction is the angle which the refracted ray makes with the normal (N, SR,)...
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Photography: Its Principles and Practice; a Manual of the Theory and ...

Carroll Bernard Neblette - Photography - 1927 - 718 pages
...alteration in the direction of a ray upon passing from one medium to another is known as refraction. The angle which the incident ray makes with the normal to the surface at the point of separation of the two mediums is known as the angle of incidence, while the angle of...
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