Year: 1939
Type: article
Abstract: The rapid summation of Fourier series is becoming a more and more urgent problem in X-ray crystallography. A machine is proposed in which the fundamental sine curve of any amplitude may be represented by a number of sets of impulses. A switch can arrange these sets of impulses to correspond to a wave of any wave-number, and the sets of impulses then go into counters. Successive operations of the generator and arranging-switch result in the addition of Fourier terms, the terms being added for all values of the variable at the same time.
Author: C A Beevers
Institution: University of Edinburgh
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2048162741