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 635
ich is perforated in the centre by a round aperture through whichrays reach the eye. There is a second concave metal mirror, N, near the endof the tube : it is somewhat larger than the central aperture in the largemirror, and its radius of curvature is much smaller than that of the largemirror. The… … Fig. 599 6i8 On Lis:J it [610- from the minor M, and form at ab an inverted and very small imageof the heavenly body. The distance of the mirrors is so arranged thatthe position of this image is between the centre, <?, and the focus,^ of thesmall mirror; hence the rays, after being reflected a…
Physics
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