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What do physicists mean when they talk about higher dimensional spaces, or space-times? How could we possibly not have noticed if space was not three-dimensional? In this first part, we will talk about the history of spaces with extra dimensions and how they became connected to dreams of unified theories, especially Kaluza-Klein theory, its achievements and its problems. Next week, we continue with the modern theories of additional dimensions of space.

Part 2 is here: https://www.youtube.com/watch?v=UHZam0Zf1FQ

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#science #mathematics #physics

0:00 Intro
0:33 Higher Dimensional Geometry
4:37 Kaluza-Klein Theory
6:00 Predictions of Kaluza-Klein Theory
7:48 Problems with Kaluza-Klein Theory
8:42 Kaluza-Klein for all Forces
9:48 Sponsor Message