Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 639
slit amounts to n wave-lengths, 71 being any whole number, we have a dark band, and when itamounts io fi + ^ wave-lengths, a bright band. The phenomena of diffraction produced when other than straight lines areused are often of great beauty. They have been more particularly examinedby Schwerdt, and… … Fis. 600. 622 On Light. [647- any particular aperture will produce, just as astronomy enables us to foretellthe motions of the heavenly bodies. Some of the simpler fonns—such asstraight lines, triangles, squares—may be cut out of tinfoil pasted on glass,and apertures of any form may be produced…
Physics
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