What do you mean by visible communication?

It is a variant of data communications that uses visible light between 400 and 800 THz. Receiver and transmitter are an integral part of visible communication. You can read about LIGO India – Gravitational Wave Detector in India in the given link.

Further readings:

  1. Topic-Wise GS 3 Questions for UPSC Mains
  2. Science & Technology Notes For UPSC – General Science Notes 

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