John Baez personal blog

Why is C the symbol for the speed of light? (2004)

"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)" [1]
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Science & SpaceHistory & Retro Computing2025

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Mar 25, 2025Why is C the symbol for the speed of light? (2004) by fanf2143121
Jul 28, 2023Why is c the symbol for the speed of light? (1997) by the-mitr13945

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