100 Years of Math at GRCC
John Dersch reviews the history of mathematics at Grand Rapids Community College.
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Brazil [Audio]
Speaker(s): Michael Palin | The story of the making of Michael Palin’s BBC1 Brazil series, made up of Michael’s own reminiscences, with a slide show of Basil Pao’s accompanying photos. Michael Palin is a comedian, actor, writer and television presenter, one of the creators of Monty Python’s Flying Circus. A self-confessed dromomaniac (travel addict), he has travelled the globe making award-winning television series, books and audios including Around the World in 80 Days and Brazil. Betwe
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4.1 Scepticism about the External World
Part 4.1. Introduces the problem of how do we have knowledge of the world, how do we know what we perceive is in fact what is there?
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#298: Curve your expectations: Observing planets and galaxies with the help of gravity

Cosmologist Dr Bart Pindor explains gravitational lensing, in which the curvature of space by gravity allows us to investigate galaxies and other astral bodies. Presented by Dr Shane Huntington.