light barrier
The speed of light, seen as a barrier to faster-than-light travelThe speed of light, seen as a barrier to faster-than-light travel.
Meaning
1 senses(uncountable)The speed of light, seen as a barrier to faster-than-light travel.
Origin
On the grounds that special relativity predicts that no object can travel faster than lighOn the grounds that special relativity predicts that no object can travel faster than light. Compare sound barrier.
Wiktionary, CC BY-SA 4.0 · source
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable
See also
neighbours in the dictionaryDictionary text adapted from Wiktionary (Wiktionary contributors, CC BY-SA 4.0) and Open English WordNet / Princeton WordNet (CC BY 4.0, WordNet License); shared under CC BY-SA 4.0. Example sentences and recordings are credited where they appear.