Well's natural philosophy : for the use of schools, academies and privte students, introducing the latest results of scientific discovery and research ; arranged with special reference to the practical application of physical science to the arts and the experiences of everyday life ; with three hundred and seventy-five engravings (1873)
Wells, David A · New York : Ivison, Blakeman, Taylor and Co. · leaf 310
g. 239, let a person, C D,Fig. 239. be placed at a suitable distance from a mir- ji J. ror, A B. The rays of hgbt, C A. proceed- ing from the head of the person, fall perpen-dicularly upon the mirror, and are thereforereflected back perpendicularly, or in thosame line; the rays B D proceedmg… … 662, The quantity of light reflected from agiven surface, is not the same at all angles, orinclinations. When the angle or inclinationwith which a ray of light strikes upon a reflecting surfaceis great, the amount of light reflected to the eye will be Is tho Bainequantity of lightreflected at…
Physics · Science · Technology
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