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Scientific American

November 1, 1982

1 min read

The Amateur Scientist, November 1982

Simple optical experiments in which spatial filtering removes the "noise" from pictures

By Jearl Walker

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This article was originally published with the title “The Amateur Scientist” in Scientific American Magazine Vol. 247 No. 5 (November 1982), p. 194
doi:10.1038/scientificamerican1182-194

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