Wiktionary

Mach band

English edit

 
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Etymology edit

Named after the physicist Ernst Mach.

Noun edit

Mach band (plural Mach bands)

 
Animated Mach bands.
  1. Any of a series of bands of slightly different shades of grey that make up an optical illusion where the contrast between the bands appears to be exaggerated as soon as they contact one another.
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