Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 49
according to the laws alreadyspecified; so that a complete but inverted image or picture of theobject is formed upon any surface placed in the focus and adaptedto receive the rays. It will be evident from what has gone before,that if the object be placed at twice the distance of the principalfocus,… … Formation of Images by Convex Lenses. the lens, the image a b will be farther from it, and of larger dimen-sions ; but if the object a b be farther from the lens, the image a hwill be nearer to it, and smaller than itself. Further, it is to beremarked that the larger the image in proportion to the…
Microscopy · Biology
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