Horizon Season 48 Episode 6
Episode Title: How Long is a Piece of String?
Genre:
Documentary
Countries:
UK,
Airing Date: November 17, 2009
Runtime:50 mins
IMDb Rating:
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Horizon: Alan Davies attempts to answer the proverbial question: how long is a piece of string? But what appears to be a simple task soon turns into a mind-bending voyage of discovery where nothing is as it seems. An encounter with leading mathematician Marcus du Sautoy reveals that Alan's short length of string may in fact be infinitely long. When Alan attempts to measure his string at the atomic scale, objects appear in many places at once, and reality itself appears to be an illusion.