Fantastic physical model of famous optical illusion melted my mind

I've experienced the Ames Window optical illusion many times, including in physical forms, but the video clip below from an early 1970s episode of Australia's long-running Curiosity Show is my all-time favorite. The combination of the illusion, the pulsing analog synth sounds, and the contrast between the green background and Deane Hutton's orange sweater vest absolutely melted my brain. — Read the rest