Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 107
pectively? Experiment No. 101. Focal length of diverging lens. Punchtwo nail holes exactly 1 inch apart in a piece of paper, put thisin front of the diverging lens, and measure the distance at whichthe spots of sunlight appear 2 inches apart on a paper behindthe lens. This is thevirtual focal…
Light · Scientific recreations
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Illustrated catalogue of the eigth [sic] series of 100 paintings by old masters of the Dutch, Flemish, Italian, French, and English schools : being a portion of the Sedelmeyer Gallery which contains about 1500 original pictures by ancient and modern artists (1902)](https://img.insideoutlibrary.com/img/200/ia-illeigt00gale-102-66.webp)
