Why Is It A Colour Wheel & Not A Line?
Aug 5, 2026 · 47m
Summary
Michael Stevens shares his obsession with organizing 152 Crayola crayons, exploring color theory, the psychological nature of purple, and why cameras fail to capture fluorescent hues. Hannah Fry then answers listener questions, explaining the fluid dynamics behind the tea leaf paradox, how firefighters use surfactants to create "wetter" water, and the cybersecurity challenges of communicating with space probes.
Topics discussed
Introduction and Michael's crayon obsession
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The physics of color: Spectrums, wheels, and magenta
Fluorescent crayons and camera sensor limitations
Color theory in makeup and skin tone correction
Ads: Sally education platform and Toyota
Listener Q&A: The tea leaf paradox and fluid dynamics
Listener Q&A: Can water be 'wetter'? Surface tension
Listener Q&A: Hacking space probes and closing thoughts
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