: 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
: You can easily recreate this yourself with simple household items: : Cutting two identical arcs from the rims
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 When placed next to each other in a
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
: Two sleeves from a coffee shop are identical but will exhibit this illusion when placed side-by-side.