Well's natural philosophy : for the use of schools, academies and privte students, introducing the latest results of scientific discovery and research ; arranged with special reference to the practical application of physical science to the arts and the experiences of everyday life ; with three hundred and seventy-five engravings (1873)
Wells, David A · New York : Ivison, Blakeman, Taylor and Co. · leaf 352
en that the rays of lightdiverging from the top and bottom of the object cross eachother in passing through the aperture, and consequently form an invertedimage. This image is rendered more distinct with a small aperture than witha large one, since, in the first case, the rays which proceed from… … Describe the ^^ ^ ^^^ place of the room ■\\-ith an aperture in the shutter, construction of We substitute a dark box, with a double-convex lens fittedObscura.™^^* into one side, a picture will be formed on the opposite side ofthe box, or upon a screen placed at the focal distance of thelens. This…
Physics · Science · Technology
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