Carhart, Henry S. (Henry Smith), 1844-1920 · Boston : Allyn and Bacon · leaf 264
mage of A. Similarly b isthe virtual image of B, and ab is the image of AB. It iserect, enlarged, and virtual. 184. Caustics by Reflection (T., 7O ; P., 9O; V., II,376). — When the angularopening of the mirror is largethe approximation made inthe last article is no longeradmissible. Parallel rays… … 254 LIGHT. of this curve is familiar to every one who has looked at acup of milk illuminated by a bright light. The simplest case of a caustic by reflection is furnished by parallel rays of light falling on a concavespherical mirror. Let AP (Fig. 115) be a section of themirror through its centre 0,…
Physics
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
