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21 sats \ 0 replies \ @StudyBITCOIN 8 Dec 2023 \ on: Fun Fact Friday - Best Fun Fact Gets 10,000 Sats meta
A laser is a very narrow beam of powerful light. It is so straight that it doesnt spread out even over huge distances. A laser beam can be reflected off a mirror on the Moon and return back to Earth in a straight line.