Duff, A. Wilmer (Alexander Wilmer), b. 1864, ed, Guthe, Karl Eugen, 1866-1915, Hallock, William, 1857-1913, Lewis, E. Percival (Exum Percival), 1863-1925, Goodspeed, Arthur W. (Arthur Willis), b. 1860, Carman, Albert Pruden, b. 1861, McClung, Robert Kenning, 1874- · Philadelphia, P. Blakiston's Son & Co · leaf 400
secondary axis/^^, that of B on the secondary axis BB.Rays drawn parallel to the principal axis from the points A and Bpass through the principal focus F and intersect the lines AAand BB at the points A and B, which determine the position andmagnitude of the image. Since the point A lies above the… … lens, it is evident that all virtual images formed by a single lensare erect, all real images inverted. 446. Magnification. Since AB and AB subtend equal anglesfrom the center of the lens (the angle included between the sec-ondary axes AA and BB) it is evident that their relative sizesare…
Physics
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