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abstraction > mathematical concept > number > constant > fundamental physical constant > universal constant > speed of light in vacuum
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speed of light in vacuum comparison table
Subject is an instance of has uncertainty is a kind of has symbol has value
universal constant  fundamental physical constant changes in value are due solely to an increase in measurement accuracy or convention
speed of light in vacuumuniversal constant0 c299792458 m s-1

Next universal constant: characteristic impedance of vacuum    Up: universal constant    Previous universal constant: Planck time