"Convex lens" Quotes from Famous Books
 ... poor deluded aunt! Her hair is almost gray; Why will she train that winter curl In such a spring-like way? How can she lay her glasses down, And say she reads as well, When through a double convex lens She ...
— The Poetical Works of Oliver Wendell Holmes, Complete • Oliver Wendell Holmes, Sr.
... form of spectacles, cannot be proven. Smith has determined that as early as the opening years of the fourteenth century such lenses were in use, but this proves nothing as regards Bacon's connection with their invention. The knowledge of lenses seems to be very ancient, if we may judge from the convex lens of rock crystal found by Layard in his excavations at Nimrud. There is nothing to show, however, that the ancients ever thought of using them to correct defects of vision. Neither, apparently, is it feasible to determine whether the idea of such an application originated ...
— A History of Science, Volume 2(of 5) • Henry Smith Williams |
