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" ACN, which the line defcribed by the incident ray contains, with the perpendicular to the refracting furface at the point of incidence, is called the angle of incidence... "
The Elements of Optics: Designed for the Use of Students in the University - Page 6
by James Wood - 1801 - 251 pages
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A Course of Lectures in Natural Philosophy

Richard Helsham - 1767 - 458 pages
...and the angle BCM, which the line defcribed by the refracted contains, with the perpendicular to the refracting furface at the point of incidence, is called the angle of refraction. As a fecond Corollary, from what has'been prov- LE c T. ed it follows, that the fines of...
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Course of Lectures in Natural Philosophy

Richard Helsham - 1802 - 500 pages
...and the angle BCM, which the line defcribed by the refracted contains, with the perpendicular to the refracting furface at the point of incidence, is called the angle of refraction. As a fecond Corollary, from what has been proved it follows, that the fines of thefe angles...
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Encyclopaedia Perthensis; Or Universal Dictionary of the Arts ..., Volume 17

1816 - 764 pages
...Montluel. PEROUSA, a town of France, in the dep. of the line, defcribed by the incident ray, contains with the perpendicular to the reflecting or refracting furface at the point of incidence. Newton. a. Cutting the horizon at right angles. — Some define the perpendicular altitude of the highefl...
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A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - 1825 - 1046 pages
...has its direction changed at the common surface of the two mediums, it is said to be refracted. S. The angle contained between the incident ray and the perpendicular to the reflecting, or refracting, surface at the point of incidence, is called the angle of incidence. 4. The angle contained between...
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The Mechanic and Chemist

g. berger - 1840 - 326 pages
...objects. they receive, we perceive their own forms, colours, and appearances. It must be observed, that the angle contained between the incident ray and the perpendicular to the reflecting surface at the point of incidence, is called the angle of incidence. BOA, fig. 1, is the angle of incidence...
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