The Speed of Light is NOT About Light

Sign Up on Patreon to get access to the Space Time Discord!   / pbsspacetime   Sign up for the mailing list to get episode notifications and hear special announcements! https://mailchi.mp/1a6eb8f2717d/space... Check out the Space Time Merch Store https://pbsspacetime.com/ Help translate our videos! http://www.youtube.com/timedtext_cs_p... The speed of light is often cited as the fastest anything can travel in our universe. While this might be true, the speed of light is the EFFECT and not the CAUSE of this phenomenon. So what's the cause? On this week's episode of Space Time, Matt helps explain what the speed of light REALLY is and why it’s the cosmic speed limit of our universe! "The Real Meaning of E=mc²":    • The Real Meaning of E=mc²   "Are Space And Time An Illusion?":    • Are Space and Time An Illusion?   ---------------------------------------­­-------- SOURCES: Einstein's derivation or the Lorentz transformation from the invariant speed of light: Einstein, Albert (1916) "Relativity: The Special and General Theory" http://www.archive.org/stream/cu31924... Lorentz Transformation without invariant speed of light, from relativity, isotropy, and consistency of frame transitions (closure group postulate): von Ignatowsky, “Das Relativitatsprinzip,” Archiv der Mathematik und Physik 17, 1–24 (1911) Berzi1 & Gorini, J. Math. Phys. 10, 1518 (1969) http://dx.doi.org/10.1063/1.1665000 Pelissetto & Testa, American Journal of Physics, 83, 338, (2015) "Getting the Lorentz transformations without requiring an invariant speed" http://arxiv.org/abs/1504.02423 https://en.wikipedia.org/wiki/Derivat... ---------------------------------------­­-------- COMMENTS: Denny Hiu    • What Happens At The Edge Of The Universe? ...   . (RadimaxRadimaX)    • What Happens At The Edge Of The Universe? ...   Epsilon Lazerface    • What Happens At The Edge Of The Universe? ...   LassieDog999    • What Happens At The Edge Of The Universe? ...   Tenebrae    • What Happens At The Edge Of The Universe? ...   ---------------------------------------­­-------- REFERENCES: Krauss & Scherrer 2007 http://arxiv.org/abs/0704.0221 Vardanyan, Trotta & Silk, 2011 http://arxiv.org/abs/1101.5476 ---------------------------------------­­-------- Let us know what topics you want to learn more about:http://bit.ly/spacetimepoll