Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 517
hyrjII, and ordinar)- earth 8. 520. Reflection of a ray of llgrbt in a ro-tating mirror.—When a horizontal ray of lightfalls on a plane mirror which can rotate abouta vertical axis, if the mirror is turned through anangle a, the reflected ray is turned throughdouble the angle. Let 7im (fig. 459) be… … 500 On Light. [520- circumference 0;««, and from the point O, where it cuts the incident ray,chords 00 and OO are drawn perpendicular respectively to mn and w/;/ ;the points O and O are the images of the point O in the two positions ofthe mirror, and the angles COD and COI) are each equal to COD.…
Physics
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