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A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams (1829)

Curtis, Thomas, fl. 1820 · London : Thomas Tegg · leaf 516

An illustration from A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams, 1829, leaf 516
eye be placed at K, it will take intoits view an object greater than the lens D E. A?ain, let G H be a portion of an object, A B,less than the lens DE; draw GD, HE, whichwill be diverging rays, and therefore will beunited at a point I,,farther distant from the lensthan the focus F; hence, if an eye… … J^ry. o:

Encyclopedias and dictionaries · Aeronautics

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