et

c0

1 symbol

Terminological databases

Metroloogia terminibaas

ID 573849 Last modified 08.09.2026
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Domain Standardisation - Metrology
valguse kiirus vaakumis
c0
speed of light in vacuum preferred
light speed in vacuum
luminal speed
velocity of light in empty space
c0
  • SI süsteemi defineeritud konstant
  • defining constant of the SI
  • scalar quantity equal to the speed of electromagnetic waves in vacuum
valguse kiirus vaakumis
Usage examples
  • Erirelatiivsusteooria kohaselt on valguse kiirus vaakumis kiiruse ülemine piir, millega tavapärane aine või energia (ja seega iga signaali kandev teave) võib kosmoses liikuda.
Good to know
  • Valguse kiiruse vaakumis c0 leppeliselt kinnistatud täpne väärtus SI-s on 299 792 458 m/s.
c0 symbol
speed of light in vacuum preferred
Usage examples
  • According to the special theory of relativity, the speed of light in vacuum is the upper limit for the speed at which conventional matter or energy (and thus any signal carrying information) can travel through space.
Good to know
  • Defining constant "speed of light in vacuum" c0 in the SI is 299 792 458 m/s.
light speed in vacuum
luminal speed
velocity of light in empty space
c0 symbol

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