Uploaded November 2017 | Updated September 2026, 3 weeks ago
At the Royal Astronomical Society discussing the much-loved but sometimes misguided Henry Perigal.
More links below ↓↓↓
Featuring Sian Prosser from the Royal Astronomical Society speaking with Brady.
Royal Astronomical Society website: ras.org.uk
Objectivity on Patreon: patreon.com/objectivity
Discuss this vieo on Brady's subreddit: https://redd.it/7eid4i
Subscribe to Objectivity: bit.ly/Objectivity_Sub
Films by James Hennessy and Brady Haran
Facebook: facebook.com/ObjectivityVideos
Twitter: twitter.com/objectivity_vid
Patron thank you page: bradyharanblog.com/objectivity-patrons
Objectivity T-Shirts: teespring.com/en-GB/stores/objectivity
Some keywords: Henry Perigal, Royal Astronomical Society, RAS, Sian Prosser, circles, moon, rotating gears, spirals, cycloids, circloids, Pythagorean theorem, proof, gravestone, moon, rotate, selenoscope, lunarium, earth, three moons, double circular motion, coins, rotameters, paradoxer, fantastic beard,
At the Royal Astronomical Society discussing the much-loved but sometimes misguided Henry Perigal.
More links below ↓↓↓
Featuring Sian Prosser from the Royal Astronomical Society speaking with Brady.
Royal Astronomical Society website: ras.org.uk
Objectivity on Patreon: patreon.com/objectivity
Discuss this vieo on Brady's subreddit: https://redd.it/7eid4i
Subscribe to Objectivity: bit.ly/Objectivity_Sub
Films by James Hennessy and Brady Haran
Facebook: facebook.com/ObjectivityVideos
Twitter: twitter.com/objectivity_vid
Patron thank you page: bradyharanblog.com/objectivity-patrons
Objectivity T-Shirts: teespring.com/en-GB/stores/objectivity
Some keywords: Henry Perigal, Royal Astronomical Society, RAS, Sian Prosser, circles, moon, rotating gears, spirals, cycloids, circloids, Pythagorean theorem, proof, gravestone, moon, rotate, selenoscope, lunarium, earth, three moons, double circular motion, coins, rotameters, paradoxer, fantastic beard,










