light barrier

Questions

What does light barrier mean?

The speed of light, seen as a barrier to faster-than-light travel.

Where does light barrier come from?

On the grounds that special relativity predicts that no object can travel faster than light. Compare sound barrier.

How to pronounce light barrier

1. Open the pronunciation page — Open the Speakur entry for “light barrier”.
2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
3. Play the audio — Click Play to hear reference audio for “light barrier”.
4. Repeat and practice — Say “light barrier” aloud, matching stress and vowels until it feels natural.