Hermann grid

English dictionary entry

Meanings

noun
  1. An optical illusion where ghostly grey blobs are perceived at the intersections of a light-coloured grid on a black background.

Word forms

Hermann grid Hermann grids

Etymology

Named after German physiologist Ludimar Hermann (1870).

This entry uses open data from Wiktionary (CC BY-SA/GFDL). Word forms are used for search and are not indexed as separate pages.