Simulating how lenses compute Fourier transforms — and how a mask at the focal plane becomes an image-processing operation. A lens placed one focal length from an object produces that object's Fourier ...
Optical physics is the study of the fundamental properties of light and its interaction with matter. This includes classical optical phenomena such as reflection, refraction, diffraction and ...
The Lost Cities of Africa. Basil Davidson Little, Brown, Boston, 1959. xvi + 366 pp. Illus. $6.50.; Africa. Its peoples and their culture history. George Peter ...
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