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: Cutting two identical arcs from the rims of paper plates is a common science demonstration used to teach fair comparisons in experiments. Related Illusions in Media
: This specific geometric version, often shared on news sites like Hindustan Times , was based on work by researcher Lydia Maniatis. : Cutting two identical arcs from the rims
The illusion typically presents two or three identical curved arcs. When placed next to each other in a specific staggered alignment, the arc on the bottom or side often appears significantly longer or larger than the one above or beside it. : Cutting two identical arcs from the rims
: You can easily recreate this yourself with simple household items: : Cutting two identical arcs from the rims
: Two sleeves from a coffee shop are identical but will exhibit this illusion when placed side-by-side.