How Fast Is Light? @ScienceAsylum

Uploaded May 2018 | Updated September 2026, 2 weeks ago

Light goes so fast that it broke our classical understanding of how speed works. We can fix our understanding with a little relativity and a space-time diagram, but you have to let go of any preconceived notions you might have about motion.
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VIDEO ANNOTATIONS/CARDS

Complete Twins Paradox:
youtu.be/UInlBJ4UnoQ

Ultimate Guide to Relativity:
youtu.be/FdWMM6aXpYE

What Are Gravitational Waves?
youtu.be/HmiPDvz0WVU

What the HECK is a Photon?!
youtu.be/73XdlgzSKws
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RELATED YOUTUBE VIDEOS

PBS Space Time on Galaxy Collision:
youtu.be/_P1xKh_kZFU
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HUGE THANK YOU TO THESE PATRONS

** Daniel Bahr, Ilya Yashin, Drake Dragon (TMDrake), Morgan Williams, Rick Finn, Kevin MacLean, David Bronakowski, Robert J Zapolis, Nicholas Ursa, Evgeny Ivanov **
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SUPPORT THE SCIENCE ASYLUM

Patreon:
patreon.com/ScienceAsylum

Advanced Theoretical Physics (eBook):
gumroad.com/l/ubSc

Merchandise:
scienceasylum.com
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OTHER SOURCES

jpl.nasa.gov/infographics/infographic.view.php?id=11489
https://home.cern/about/updates/2015/04/first-successful-beam-record-energy-65-tev
physics.stackexchange.com/questions/43404/minkowski-diagram-hyperbola-and-invariant-quantity-of-relativity
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LINKS TO COMMENTS

MusicalRaichu - Featured Comment:
youtube.com/watch?v=UInlBJ4UnoQ&lc=UgyxXoFooiHYw1ghzIZ4AaABAg

IoDavide1 - Featured Comment:
youtube.com/watch?v=UInlBJ4UnoQ&lc=UgzyhI0A2-hn9BTq1YJ4AaABAg
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IMAGE CREDITS

Juno Space Probe:
commons.wikimedia.org/wiki/File:Juno_space_probe.jpg

US Flag:
commons.wikimedia.org/wiki/File:Flag_of_the_United_States.svg

$How do we KNOW light is a wave? We might not have unified electrodynamics until 1865, but weve known light was a wave since the original double-slit experiment in 1801. Lets talk about diffraction and wave interference. VIDEO ANNOTATIONS/CARDS Where Does Light Come From? https://youtu.be/3TufSRaHB6g What the HECK is Energy? https://youtu.be/snj1wBtn6I8 The Color White Does NOT Exist: https://youtu.be/-E6dxybpUvo RELATED YOUTUBE VIDEOS Veritasium on Double-Slit: https://youtu.be/Iuv6hY6zsd0 SUPPORT THE SCIENCE ASYLUM Patreon: http://www.patreon.com/ScienceAsylum Advanced Theoretical Physics (eBook): https://gumroad.com/l/ubSc Merchandise: https://www.scienceasylum.com HUGE THANK YOU TO THESE PATRONS Asylum Orderlies: Daniel Bahr, William Morton Einsteinium Crazies: Albert B. Cannon, Tim Ruffles, LT Marshall Faulds, Ilya Yashin, Rick Finn Plutonium Crazies: JKLMN Anderson, Kevin MacLean Platinum Crazies: Vittorio Monaco, Al Davis, Stephen Blinn, Mikayla Eckel Cifrese, Evgeny Ivanov OTHER SOURCES LINKS TO COMMENTS Photon Questions: https://www.youtube.com/watch?v=3TufSRaHB6g&lc=UgxKhdP1c2l84L0qJPJ4AaABAg https://www.youtube.com/watch?v=3TufSRaHB6g&lc=UgyQoADcf7PnNgzHo9t4AaABAg https://www.youtube.com/watch?v=3TufSRaHB6g&lc=UgyhhUktuKtrdJmQLI94AaABAg https://www.youtube.com/watch?v=3TufSRaHB6g&lc=UgyaqEhjv7T68RbuJn14AaABAg https://www.youtube.com/watch?v=3TufSRaHB6g&lc=Ugy8p_KqsLuQM7nm-rd4AaABAg Featured Comment: https://www.youtube.com/watch?v E6dxybpUvo&lc=UgyUAPD5tU3zDq80E6J4AaABAg IMAGE CREDITS Christiaan Huygens: https://commons.wikimedia.org/wiki/File:Christiaan_Huygens-painting.jpeg https://commons.wikimedia.org/wiki/File:Web_Huygens690.jpg Isaac Newton: https://commons.wikimedia.org/wiki/File:GodfreyKneller-IsaacNewton-1689.jpg https://commons.wikimedia.org/wiki/File:Opticks.jpg Thomas Young: https://commons.wikimedia.org/wiki/File:Thomas_Young_by_Thomas_Lawrence.jpg$

You CANNOT See Through Walls (or Windows) with a Thermal Camera.

What Counts as Intelligent Life? #shorts

Still Dont Understand Gravity? This Will Help.

$Why Does Light REALLY Bend? A lot of optical illusions can be explained by Fermats principle of least time, but why does light obey it? On a fundamental level, it all comes down to quantum mechanics, specifically quantum optics, where we use the famous Feynman path integral formulation to explain light through photons. VIDEO ANNOTATIONS/CARDS How Fast Is Light? https://youtu.be/a9T26ItpcDA Lagrangian Mechanics: https://youtu.be/MIBfKJHMWHU You Dont Know How Mirrors Work: https://youtu.be/rYLzxcU6ROM SUPPORT THE SCIENCE ASYLUM Patreon: http://www.patreon.com/ScienceAsylum Advanced Theoretical Physics (Paperback): http://www.lulu.com/shop/nick-lucid/advanced-theoretical-physics-a-historical-perspective/paperback/product-24250687.html Advanced Theoretical Physics (eBook): https://gumroad.com/l/ubSc Merchandise: https://www.scienceasylum.com HUGE THANK YOU TO THESE PATRONS Warden of the Asylum: YDT Asylum Counselors: Matthew OConnor Asylum Orderlies: William Morton Einsteinium Crazies: Albert B. Cannon, LT MarshMan, Ken Davis, Wacky, Eoin OSullivan, Ilya Yashin Plutonium Crazies: Al Davis, Kevin MacLean, JKLMN Anderson Platinum Crazies: Kyle Bowles, Jon Adams, Mr. Orn Jonasar, Rick Dinning, Eugene Boone, Fletch, Felipe Cruz, Vittorio Monaco, Stephen Blinn, Mikayla Eckel Cifrese OTHER SOURCES https://www.feynmanlectures.caltech.edu/I_26.html https://www.feynmanlectures.caltech.edu/I_27.html https://www.feynmanlectures.caltech.edu/I_31.html http://www.vega.org.uk/video/subseries/8 https://www.physicsclassroom.com/Class/refrn/u14l1b.cfm Optics by Hecht https://www.engineeringtoolbox.com/refractive-index-d_1264.html https://www.etymonline.com/word/refraction LINKS TO COMMENTS https://www.youtube.com/watch?v=1n_otIs6z6E&lc=UgzJ-NZ6tSFKnQEsiVB4AaABAg IMAGE CREDITS Black Hole Visualization: https://www.nasa.gov/feature/goddard/2019/nasa-visualization-shows-a-black-hole-s-warped-world$