The speed of light is 299,792,458 meters per second. That's an incredibly fast speed. But how did we even figure that out in the first place? And how do we even know it that accurately?
Part 2 - Why can’t anything go faster than the speed of light? ruvid.net/video/video-jRLNVvsxfFo.html
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More details on measuring the speed of light (or really, the length of a meter!) with your microwave: physicamechanica.wordpress.com/2013/12/04/speed-of-light-in-a-microwave/
Here are links to the papers mentioned:
Rømer (1667) - gallica.bnf.fr/ark:/12148/bpt6k77856x.image.f39.langEN#
Huygens (1677) - gallica.bnf.fr/ark:/12148/bpt6k77856x.image.f37.langEN
Newton (1704) - gallica.bnf.fr/ark:/12148/bpt6k3362k.image.f235.vignettesnaviguer
Bradley (1729) - royalsocietypublishing.org/doi/pdf/10.1098/rstl.1727.0064
Fizeau (1849) - onlinelibrary.wiley.com/doi/abs/10.1002/andp.18501550113
Weber & Kohlrausch (1856) - onlinelibrary.wiley.com/doi/epdf/10.1002/andp.18561750903
Maxwell (1864) - upload.wikimedia.org/wikipedia/commons/1/19/A_Dynamical_Theory_of_the_Electromagnetic_Field.pdf
Essen (1950) - www.jstor.org/stable/pdf/98433.pdf?refreqid=excelsior:117b745e1aa593a54098a1332f856030
Evenson et al. (1972) - journals.aps.org/prl/pdf/10.1103/PhysRevLett.29.1346
Dr Becky Smethurst is an astrophysicist researching galaxies and supermassive black holes at Christ Church at the University of Oxford.
Dec 4, 2019