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Discussion :: Technology

  1. What was the active medium used in the first working laser ever constructed?

  2. A.

     A diamond block

    B.

     Helium-neon gas

    C.

     A ruby rod

    D.

     Carbon dioxide gas

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    Answer : Option C

    Explanation :

    Theodore Maiman built the first working laser using a ruby rod while working at Hughes Research Laboratories in Malibu, California. It lased for the first time on May 16, 1960.


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