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Written by Joseph Conlon
Professor of Theoretical Physics, University of Oxford
Author, Why String Theory? https://www.amazon.com/Why-String-The...

Edited and Narrated by David Kelly
Thumbnail Art by Ettore Mazza
Huge thanks to Oliver Knill for the use of his Calabi-Yau imagery, and Jeff Bryant for his.

Footage from Videoblocks, Artgrid. Footage of galaxies from NASA Goddard.

Image Credits:

Democritus By Didier Descouens - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index...

Aspen Centre for Physics By Éamonn Ó Muirí - Flickr: The Aspen Center for Physics, CC BY 2.0, https://commons.wikimedia.org/w/index...

Silesia By derivative work: Dunmerr (talk) - Wroclaw_1.jpg, CC BY-SA 3.0, https://commons.wikimedia.org/w/index...

String theory SriVrushank(1840372), CC BY-SA 4.0 https://creativecommons.org/licenses/..., via Wikimedia Commons

String theory t duality calculations Andrius.v, CC BY 3.0 https://creativecommons.org/licenses/..., via Wikimedia Commons

Mobius Strip By 09glasgow09 - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index...

By Alex P. Kok - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index...

Klein bottle By Tttrung - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index...

Roman surface By en:user:A13ean - Transferred from en.wikipedia to Commons by Keyi., CC BY-SA 2.5, https://commons.wikimedia.org/w/index...

Calabi Yau Manifold By The original uploader was Lunch at English Wikipedia. - Transferred from en.wikipedia to Commons by Lunch. This diagram was created with Mathematica., CC BY-SA 2.5, https://commons.wikimedia.org/w/index...

Quintic By The original uploader was Floriang at German Wikipedia. - Transferred from de.wikipedia to Commons by Trockennasenaffe using CommonsHelper. This diagram was created with Mathematica., CC BY-SA 3.0, https://commons.wikimedia.org/w/index...

Plant cells By Des_Callaghan - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index...

00:00 Introduction
04:15 The Fifth Dimension
10:03 A Theory of Strings
16:30 Visualizing The Invisible (Calabi-yau Manifolds)
22:31 Where Are The Hidden Dimensions?
33:01 Hunting For Evidence At The Beginning Of Time

#stringtheory