Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 395
e, and o c the radius; Fis the focus ; the line passingthrough it is the optical axis;o being the optical centre.All perpendicular rays passthrough C. All rays fallingin a direction parallel with theoptical axis are reflected andcollected at F. Magnifiedimages will be produced, andif the object be… … Concave mirror. MIRRORS. 39 We can understand these phenomena by the accom-panying diagrams. Suppose a ray, A n, passes from oneobject, AB, at right angles, it will be reflected as nKC, theray, A C, being reflected to F. These cannot meet in front
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