NZ Herald cartoon and optical illusion – can anyone explain how it works? (nzherald.co.nz)

2 points by 69_years_and 11y ago ↗ HN

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gus_massa 11y ago ↗

Wikipedia has an article about it, but the explanation is not very clear: http://en.wikipedia.org/wiki/Grid_illusion#Scintillating_gri...