Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 75
herical mirrors do not converge allparallel rays at the focus because thosewhich strike near the edge are reflected be-hind the focus (Fig. 110). This is called thespherical error or spherical aberration ofthe mirror. Conversely if a light is placedat its focus a spherical mirror does not… … REFRACTION OFLIGHT When light passes in aslanting direction from onemedium to another, — for ex-ample, from air to wateror the reverse, or from airto glass or the reverse,—part of it is reflectedat the surface between thetwo media and part of itenters the second medium butis bent out of its path,…
Light · Scientific recreations
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