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Light barrier

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This is the current revision of this page, as edited by Materialscientist (talk | contribs) at 16:47, 20 November 2020 (Reverted edits by 205.123.145.30 (talk) (HG) (3.4.10)). The present address (URL) is a permanent link to this version.

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Light barrier may refer to:

  • The theoretical maximum speed that any physical object or information can travel at – the speed of light
  • An opto-electronic device used in security applications, also known as a light curtain