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About: Optical chopper     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : dbo:Device, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: device New Facet based on Instances of this Class

An optical chopper is a device which periodically interrupts a light beam. Three types are available: variable frequency rotating disc choppers, fixed frequency tuning fork choppers, and . A rotating disc chopper was famously used in 1849 by Hippolyte Fizeau in the first non-astronomical measurement of the speed of light.