speed of light

English

Wikipedia

Noun

speed of light (uncountable) (abbreviated as c)

1. (physics) The speed of electromagnetic radiation in a perfect vacuum: exactly 299,792,458 metres per second by definition.
   • 2011 September 22, Nick Collins, “Speed of light 'broken' by scientists”, Daily Telegraph:

     The science world was left in shock when workers at the world's largest physics lab announced they had recorded subatomic particles travelling faster than the speed of light – a feat that Einstein said was impossible.

Synonyms

• Einstein barrier
• Einstein constant
• lightspeed
• light speed
• c

Related terms

• subluminal
• tardyon
• luxon
• tachyon
• faster-than-c
• faster-than-light (FTL)
• superluminal

Translations

the speed of electromagnetic radiation in a perfect vacuum

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• Arabic: سرعة الضوء (ar)
• Armenian: լույսի արագություն (hy) (luysi aragut'yun)
• Azeri: işığın sürəti (az)
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• Catalan: velocitat de la llum (ca) f
• Chinese:

  Mandarin: 光速 (cmn) (guāngsù)

• Czech: rychlost světla (cs) f
• Danish: lysets hastighed (da)
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• Extremaduran: velociá de la lus f
• Finnish: valon nopeus (fi), valonnopeus (fi)
• French: vitesse de la lumière (fr)
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• German: Lichtgeschwindigkeit (de) f
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