Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 636
ocus,^ of thesmall mirror; hence the rays, after being reflected a second time from themirror N, form at ab a magnified and inverted image of ab^ and thereforein the true position of the heavenly body. This image is viewed through aneyepiece, P, which may be either simple or compound, its object… … Fig. 600 and as the distance of distinct vision is not the same with all eyes, theimage ab ought to be formed at different distances. The required adjust-ments may be obtained by bringing the smallmirror nearer to or farther fromthe larger one ; this is effected by means of a milled head, A (fig.…
Physics
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