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Books Books 81 - 90 of 104 on The disciples of Plato contributed not a little to the advancement of optics, by....  Take our survey New!
" 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... "
Wells's Natural Philosophy: For the Use of Schools, Academies, and Private ... - Page 72
by David Ames Wells - 1869 - 452 pages
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Witelonis perspectivae liber quintus, Book 5

Witelo, A. Mark Smith - Science - 1983 - 267 pages
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Science about Us: A Complete Course for CXC Integrated Science

Science - 1985 - 208 pages
...satellites? Activities 1 Use a plane mirror, a protractor and a ray box to show that when light reflects, the angle of incidence is always equal to the angle of reflection. 2 Use a pencil to locate the position of the image of an object (eg a small coin) behind a plane mirror....
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Optical Scanning

Gerald F. Marshall - Technology & Engineering - 1991 - 896 pages
...angular deflection. The degree of angular deflection is described by the first mirror law, which states that the angle of incidence is always equal to the angle of reflection. The angular path of a reflected ray in spherical space is described by the second mirror law, which...
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Ptolemy's Theory of Visual Perception: An English Translation of the Optics ...

Ptolemy - Science - 1996 - 300 pages
...conclusion—a false perceptual conclusion in this case; see II,22, n. 32 below. 15 That is, in reflection the angle of incidence is always equal to the angle of reflection. Evidently, Ptolemy thought that the basic form of curved mirror was spherical rather than circular;...
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Lasers and Electro-optics: Fundamentals and Engineering

Christopher C. Davis - Science - 1996 - 720 pages
...light strikes a plane mirror, or the planar boundary between two media of different refractive index, the angle of incidence is always equal to the angle of reflection, as shown in Fig. (14.2). This is the fundamental law of reflection. When a light ray crosses the boundary...
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Science and Technology Year 5-6

Peter M. Clutterbuck - Science - 2000 - 76 pages
...incidence. The angle which the reflected ray makes with its normal is called the angle of reflection. The angle of incidence is always equal to the angle of reflection. Thus, the direction of the ray of light is measured by the angle it makes with the normal (perpendicular...
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Spotlight Science: Teacher Support Pack, Volume 7

Keith Johnson, Sue Adamson, Gareth Williams - Science - 2000 - 632 pages
...hands behind your ears to collect sound waves). The Law of Reflection (the Help Sheet is needed here) The angle of incidence is always equal to the angle of reflection. (This almost applies also to balls bouncing but is slightly changed by friction at the surface; you...
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Fitting Guide for Rigid and Soft Contact Lenses: A Practical Approach

Medical - 2002 - 693 pages
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Physical Science: What the Technology Professional Needs to Know

C. Lon Enloe - Science - 2001 - 541 pages
...only be seen by looking into the mirror. The law of reflection states that wherever reflection occurs, the angle of incidence is always equal to the angle of reflection. When light rays strike objects their frequencies match either an allowable electron transition or molecular...
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Out of the Blue: A 24-Hour Skywatcher's Guide

John Naylor - Nature - 2002 - 360 pages
...Angle of reflection Reflecting surface Specular reflection Diffuse reflection Figure G4 Reflection. The angle of incidence is always equal to the angle of reflection, even when the reflecting surface is rough. refraction When a wave passes from one medium to another...
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