The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
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Search results matching " vacuum "...

characteristic impedance of vacuum
electric constant
magnetic constant
molar Planck constant times c
natural unit of momentum in MeV/c
Newtonian constant of gravitation over h-bar c
Planck constant over 2 pi times c in MeV fm
Rydberg constant times c in Hz
speed of light in vacuum


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