Elements of natural philosophy (Volume 2-3) (1850)
Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 215
after deviation, we find fn</; And convergenceincreased; which shows us that a positive vergency will be dimin-ished by the deviation. For all cases of negative vergency, we find numerically but algebraically, JL>I /< / is to concentratethe light Hence the effect That is to say, when the…
Mechanics · Acoustics · Optics
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