Part-Time Genius Part-Time Genius

What's the Science of Invisibility?

Aug 7, 2026 · 42m

Summary

Hosts Will Pearson and Mangesh Hatikater explore the science and psychology of invisibility, featuring astronomer Bob Berman on invisible light and quantum observation. They discuss animal UV vision, historical invisibility myths, and modern metamaterial cloaking. Guests Peregrine Church and Zach Fisher share their rain-activated art project, while the hosts examine the "invisibility cloak illusion" and children's perceptions of being seen.

Topics discussed

Sponsors and intro story about lemon juice invisible ink Welcome to Part-Time Genius and introduction to invisibility The science of invisible light and the electromagnetic spectrum Wave-particle duality and the nature of observation Animals that see ultraviolet light: birds, reindeer, and wolves Modern invisible ink technology using UV-reactive paper History of light discovery: infrared, X-rays, and ancient views UV radiation, Vitamin D, and modern sun avoidance habits Mid-roll ads and transition to historical invisibility spells Medieval invisibility potions and their gross ingredients Psychology of desiring invisibility vs. flight as superpowers Metamaterials and the science behind real invisibility cloaks Rain-activated art project using super hydrophobic coatings Quiz segment and more mid-roll advertisements The psychological illusion of being invisible in public Children's logic in peekaboo and hiding their eyes PGG Fact Off: Polar bears and the invisible employee Outro, final ads, and credits
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