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 643
Fig. 611 distance of ^q or ^Ixs ^^ ^ millimetre apart. Hy measuring the distancebetween two of these lines on the image, we may calculate the magnifyingpower. According to the magnifying power which it is desired to obtain,the objective x (fig. 612) is formed of one, two, or three lenses, which are… … KiK. 612 618. Photo-electric microscope.—This is in effect a solar microscopewhich is illuminated by the electric light instead of by the suns rays. Theelectric light, by its intensity, its steadiness, and the readiness with whichit can be produced at any time of the day, has in practice replaced…
Physics
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