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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... "
An Introduction to the Elements of Practical Astronomy - Page 67
by James R. Christie - 1853 - 118 pages
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The Motion of Fluids, Natural and Artificial: In Particular that of the Air ...

Martin Clare - Fluid mechanics - 1737 - 375 pages
...the Voice will be better returned, and more diftinctly heard by 'another Perfon at fome other Place. The Angle of Incidence is always equal to the Angle of Reflexion ; the Note or Sound thrown directly on any Object, will therefore be returned nearly in the fame Line...
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The Works of M. de Voltaire: Remarks on Mr. Pascal's Thoughts. Elements of ...

Voltaire - 1763
...general what .happens in the refleftion of rays, to our eyes, arid this fole principfe, principle, that the angle of incidence is always equal to the angle of refle&ion, is the true foundation of all the myfteries of catoptrics. We are now to know in what manner...
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Lectures on Natural and Experimental Philosophy: Considered in It ..., Volume 2

George Adams - Science - 1794
...reflection; and if eca be the angle of incidence, deb will be the angle of reflection. This general law, that the angle of incidence is always equal to the angle of refefiion, is the foundation of all catoptries, and is fufncient for demonflrating all the phenomena...
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A Dissertation on the Philosophy of Aristotle: In Four Books ...

Thomas Taylor - 1812 - 577 pages
...summer and at noon are direct ; but in winter and the morning they are oblique. But it is demonstrated that the angle of incidence is always equal to the angle of reflection. Reflections however at right angles, more compress the air, and on this account the air...
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The inverted scheme of Copernicus: with the pretended experiments upon which ...

Bartholomew Prescot - Bible and science - 1822 - 216 pages
...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 also seems to have apprehended the Newtonian system of colours, for he calls them...
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The Table Book..., Volume 1

William Hone - Days - 1827 - 870 pages
...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 " the effect of light transmitted from bodies, the small particles...
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Elements of Physics: Or Natural Philosophy, General and Medical, Volume 1

Neil Arnott - Physics - 1827 - 532 pages
...an equal degree of obliquity on the other side. To express this very important law shortly, we say that " the angle of incidence is always equal to the angle of reflection." — According to this law, any irregular surface must break an echo ; and if the irregularity...
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The Table Book, Volume 2

William Hone - Almanacs, English - 1828
...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 " the effect of light transmitted from bodies, the small particles...
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Library of Useful Knowledge: Natural philosophy, Volume 1

1829
...surfaces of a glass mirror. ANGLE OF. The law of reflexion is generally expressed by the assertion that " the angle of incidence is always equal to the angle of reflexion," and is thus explained : — If AB (Jiii- 11.) be a plane surface, and a ball, 1 1 D, be fig. 1 1 ....
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Library of Useful Knowledge: Natural philosophy, Volume 1

Physics - 1829
...surfaces of a glass mirror. ANGLE OF. The law of reflexion is generally expressed by the assertion that " the angle of incidence is always equal to the angle of rellexinn," and is thus explained : — If Л 15 (Jiy. II.) be a plane surface, 11. and a ball, at...
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