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The Speed of Light is NOT About Light

4073588 / Oct 7, 2015

The Speed of Causality
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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":

"Are Space And Time An Illusion?":



Einstein's derivation or the Lorentz transformation from the invariant speed of light:
Einstein, Albert (1916) "Relativity: The Special and General Theory"

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)

Pelissetto & Testa, American Journal of Physics, 83, 338, (2015) "Getting the Lorentz transformations without requiring an invariant speed"



Denny Hiu

. (RadimaxRadimaX)

Epsilon Lazerface





Krauss & Scherrer 2007

Vardanyan, Trotta & Silk, 2011


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