"As for c, that is the speed of light in vacuum, and if you ask why c, the answer is that it is the initial letter of celeritas, the Latin word meaning speed."

"As for c, that is the speed of light in vacuum, and if you ask why c, the answer is that it is the initial letter of celeritas, the Latin word meaning speed." Isaac Asimov in "C for Celeritas (1959)" 'https://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/c.html https://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLig...