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 518
the mirror w. The index arm is then moved until theeye sees simultaneously with this the image of another object g, whichreaches the eye after successive reflections from the mirror a, and from thesilvered part of the mirror w ; that is, l)y the path i^^anicdo. The angleni/ia which the two mirrors… … ■/i Fis. 4^0. ^^ -523] Malices Heliograph. 501 its deflection is now the angle ^r>/« ; whence, by the last article, the mirror amust have turned through half that angle, the mirror j/i having been fixed inposition throughout. 522. Measurement of small angles by reflection from a mirror An…
Physics
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