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, events take an even stranger turn. Not only do objects appear in many places at once, but reality itself seems to be an illusion. Ultimately, Alan finds that measuring his piece of string could - in theory at least - create a black hole, bringing about the end of the world.
| Title | Horizon - Season 46 Episode 17 : How Long is a Piece of String? |
|---|---|
| Alternative Titles | BBC Horizon |
| Subtitle Available |
 ETC.
|
| First Air Date | 1964-02-04 |
| Last Air Date | 2024-07-22 |
| Number of Episodes | 1169 |
| Number of Seasons | 60 |
| Genres | Documentary, |
| Networks | BBC Two, |
| Casts | |
| Plot Keywords | , |
Episodes List
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Horizon Season 46 :Episode 1 Why Are Thin People Not Fat? Why Are Thin People Not Fat?
2009-01-26Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 2 Cannabis: The Evil Weed? Cannabis: The Evil Weed?
2009-02-03Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 3 Why Do We Dream? Why Do We Dream?
2009-02-10Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 4 Can We Make a Star on Earth? Can We Make a Star on Earth?
2009-02-17Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 5 The Secret Life of Your Bodyclock The Secret Life of Your Bodyclock
2009-02-24Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 6 What's the Problem with Nudity? What's the Problem with Nudity?
2009-03-03Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 7 How to Survive a Disaster How to Survive a Disaster
2009-03-10Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 8 Who Do You Want Your Child to Be? Who Do You Want Your Child to Be?
2009-03-17Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 9 Why Can't We Predict Earthquakes? Why Can't We Predict Earthquakes?
2009-03-24Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 10 Alan and Marcus Go Forth and Multiply Alan and Marcus Go Forth and Multiply
2009-03-31Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 11 How Violent Are You? How Violent Are You?
2009-05-12Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 12 Do I Drink Too Much? Do I Drink Too Much?
2009-12-22Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 13 The Secret You The Secret You
2009-12-22Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 14 Fix Me Fix Me
2009-12-22Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 15 Who's Afraid of a Big Black Hole? Who's Afraid of a Big Black Hole?
2009-12-22Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 16 Why Do We Talk? Why Do We Talk?
2009-12-22Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 17 How Long is a Piece of String? How Long is a Piece of String?
2009-12-22Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 46 :Episode 18 How Many People Can Live on Planet Earth? How Many People Can Live on Planet Earth?
2009-12-09Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
