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" The angle of incidence is equal to the angle of reflection. (The angle of incidence is the angle between the incident ray and the normal; the angle of reflection is the angle between the reflected ray and the normal.) In Fig. "
Household Physics - Page 103
by Claude H. Brechner - 1919 - 304 pages
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Elementary Practical Physics: A Laboratory Manual for Beginners

William Watson - Physics - 1896 - 264 pages
...C ; for if CD is such a ray, then CD is the normal at D, and the angle of incidence is o°, because the angle of incidence is the angle between the incident ray and the normal, and here CD is both the incident ray and the normal. Hence the reflected ray must also be inclined...
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Elementary Course in Experimental Physics

Arthur Chambers Alexander - 1899 - 100 pages
...distance of the incident ray, in each case, from the vertical compare with that of the reflected ? The angle of incidence is the angle between the incident ray and a line normal (perpendicular) to the reflecting surface, and the angle of reflection is the angle between...
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Mirrors, Prisms and Lenses: A Text-book of Geometrical Optics

James Powell Cocke Southall - Geometrical optics - 1918 - 624 pages
...the normal BN is called the plane of incidence, which corresponds here with the plane of the diagram. The angle of incidence is the angle between the incident ray and the incidence-normal; or, to define this angle more exactly, the angle of incidence is the acute angle...
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Essentials of Physics for College Students: a Textbook for Undergraduates ...

Daniel Webster Hering - 1918 - 390 pages
...the incident wave front, that of the refracted ray is perpendicular to the refracted wave front, and the angle of incidence is the angle between the incident ray and a line perpendicular to the interface of the two media, while the angle of refraction is that between...
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Dictionary of British Scientific Instruments

Scientific Instrument Manufacturers' Association of Great Britain - Scientific apparatus and instruments - 1921 - 378 pages
...in accordance with the following fundamental law of refraction discovered by Snell : — The sine of the angle between the incident ray and the perpendicular to the surface is always in a constant ration to the sine of the angle between the refracted ray and the perpendicular...
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Optics and Service Instruments

Great Britain. His Majesty's Stationery Office - Optical instruments - 1941 - 136 pages
...refractive index is obtained by dividing the sine of the angle of incidence by the sine of the angle of refraction. The angle of incidence is the angle...between the incident ray and the perpendicular to the point of incidence, and the angle of refraction is the angle between the refracted ray and the perpendicular....
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Aviation Fire Control Technician 3

United States. Bureau of Naval Personnel - Airplanes, Military - 1957 - 768 pages
...all the light that strikes it is said to be a. transparent b. opaque c. luminous d. translucent 5. The angle of incidence is the angle between the incident ray and the a. incident plane b. reflected ray c. surface d. normal 6. A thin-edged lens is often called a lens....
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Vibrational Spectra: Principles and Applications with Emphasis on Optical ...

P.L. Polavarapu - Science - 1998 - 411 pages
...characterization of molecules on surfaces. The experimental geometry for these measurements is shown in Fig. 12-7. The angle of incidence is the angle between the incident ray and the surface normal. The plane of reference is the ir plane which is the plane containing the incident(i)...
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McQs in Optics and Refraction

Ivor S. Levy, Paul Riordan-Eva - Eye - 1993 - 56 pages
...steeper than the vertical curvature E - F astigmatism can be detected by spot retinoscopy 11. A - F the angle of incidence is the angle between the incident ray and the normal to the reflecting surface B - F reflection at a plane surface produces a virtual image C - F...
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Principles of Soil and Plant Water Relations

M.B. Kirkham - Technology & Engineering - 2004 - 520 pages
...measure the wetting angle in soil by using mirrors and the well-known laws of reflection in physics. The angle of incidence is the angle between the incident ray and the normal to the reflecting surface at the point of incidence (Schaum, 1961, p. 214) (Fig. 6.7). The angle...
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