Uploaded March 2022 | Updated September 2026, 2 weeks ago

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Is the speed of light finite? Or is it infinite? That depends on what geometry you're using and how you define speed. It's infinite in hyperbolic geometry, which is the proper geometry for spacetime.

00:00 Cold Open
00:49 Speed Basics
03:06 Rapidity
06:19 Hyperbolic Geometry
09:21 Infinite Speed of Light
10:26 Sponsor Message
11:15 Outro
11:38 Featured Comment

Nick Lucid - Host/Writer/Editor/Animator
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VIDEO ANNOTATIONS/CARDS

Length Contraction Explained:
youtu.be/TxW6_E3uLuo

What if YOU were made of Light?
youtu.be/HU6t8QvGZmA
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OTHER SOURCES

http://hyperphysics.phy-astr.gsu.edu/hbase/Relativ/ltrans.html
http://hyperphysics.phy-astr.gsu.edu/hbase/Relativ/tdil.html
en.wikipedia.org/wiki/Rapidity
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LINKS TO COMMENTS

youtube.com/watch?v=SbfQkIeunMY&lc=UgyO_22Tg8wrImwGfjR4AaABAg
youtube.com/watch?v=SbfQkIeunMY&lc=UgyF3tZemYyvHBrYYWl4AaABAg
youtube.com/watch?v=SbfQkIeunMY&lc=Ugxc4pGzr52qanRQuEJ4AaABAg
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IMAGE CREDITS

CERN Video:
https://videos.cern.ch/record/2020780
youtu.be/pQhbhpU9Wrg