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Trivia · Ages 18+

Riddle #239

"Laser" began life as an acronym. What do its five letters stand for?

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Open-ended riddle: think it through, then reveal the answer.

Answer: Light Amplification by Stimulated Emission of Radiation

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More Trivia riddles for Ages 18+

#240 Which is the only sea on Earth with no coastline, bounded entirely by ocean currents rather than by land?
#241 Which nineteenth-century novel opens with the three words "Call me Ishmael"?
#242 Which blood type is known as the universal donor for red blood cell transfusions?

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