Ornament Memes

Nothing says "Merry Christmas" like hanging spherical coordinates on your tree! While normal people decorate with reindeer and candy canes, mathematicians and physicists are out here turning holiday decorations into a calculus final exam. This ornament perfectly captures the moment when r, θ, and φ come together in three-dimensional harmony—because nothing spreads holiday cheer quite like remembering that one nightmare problem from multivariable calculus that made you question your life choices. The perfect gift for that special someone who'd rather integrate over a sphere than sing carols.