Planck speed
Noun
Meaning
Planck speed (uncountable)
(physics) The velocity equal to one Planck length per Planck time; equal to the speed of light. Symbol is vP or c.
Noun
Planck speed (uncountable)
(physics) The velocity equal to one Planck length per Planck time; equal to the speed of light. Symbol is vP or c.