We are introduced to Foucault’s pendulum. Moving under the influence of gravity, over the course of a day the pendulum’s direction of swing will move, a bit like the hands of a clock. But what was the source of the rotation?
Professor Stephen Hawking challenges a selection of volunteers to think like the greatest geniuses in history and solve some of humanity's most enduring questions. Airs Wednesdays, May 18 - June 1, 2016, with two back-to-back episodes starting at 9/8c.
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