Post #4466792

A 3D-printed rigid nylon object filmed on a phonograph turntable. Under continuous lighting there are fewer possibilities for this type of visual illusion than under a strobe light: Invariance under a continuous action of the additive reals is a lot more restrictive than invariance under an action by the additive integers. John Edmark has created pieces that are truly spectacular when strobe-lit: https://www.johnedmark.com/phi #Math #MathArt #SciArt