2022--optical-illusion--these-arcs-are-the-same-length---magazine--healty-and-sport-news

While your specific title mentions "Healthy and Sport News," these illusions frequently appear in "Healthy Aging" or "Mental Health" sections of magazines (like Yahoo Lifestyle ) as "brain hacks" to illustrate how perception can differ from reality. Magic Arcs - The Spangler Effect

: You can easily recreate this yourself with simple household items: While your specific title mentions "Healthy and Sport

: Your brain performs an "unfair comparison" by matching the shorter inner radius of one arc against the longer outer radius of the adjacent arc. Related Illusions in Media : Two sleeves from

: 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 When placed next to each other in a

: Two sleeves from a coffee shop are identical but will exhibit this illusion when placed side-by-side.

: This specific geometric version, often shared on news sites like Hindustan Times , was based on work by researcher Lydia Maniatis.

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.