The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 295
pproach each other. Suppose the ray No. 1 to haveadvanced to the position No. 3, and the ray No. 2 to the position No.4 ; it will then be evident that their reflected rays will be in the samedirection 3 and 4, and, therefore, that the two images of the suncoincide, as shown by the arrows being in… … The following familiar illustration is introduced to further explainthe optical construction. When the sun is about setting, it is not un-common to see the rays so reflected from the windows of a wholerange of houses, as to convey the idea of a public illumination. Whilesome portions of the suns…
Architecture · Civil engineering · Science
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