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 634
s theeye sees an erect and magnified image at a b\ which appears nearer becauseit is seen under an angle, a0b\ greater than the angle, AOB, under whichthe object is seen. The magnifying power is equal to the ratio of the angle aOb to theangle AOB, and is usually from 2 to 4. The distance of the… … Fig. 598A Galileos telescope is very short and portable. It has the advantage of show-ing objects in their right position ; and, further, as it has only two lenses, itabsorbs very little light : in consequence, however, of the divergence of theemergent rays, it has only a small field of view, and…
Physics
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
