General Knowledge - Technology - Discussion

Discussion Forum : Technology - Section 1 (Q.No. 67)
67.
What was the active medium used in the first working laser ever constructed?
A diamond block
Helium-neon gas
A ruby rod
Carbon dioxide gas
Answer: Option
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.
Discussion:
1 comments Page 1 of 1.

Jayasree said:   1 decade ago
What is meant by hughes?

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