Engineering Guy explains ‘How a laser works’

Many modern technologies, such as range finders, CD and Blueray players and even barcode scanners depend on lasers. The unique characteristics of laser light make all these things possible. In 1960, Ted Maiman demonstrated the first laser by taking a cylinder of ruby and surrounding it with a xenon arc flash lamp used in aerial photography. But do we really know exactly how laser technology works? Another interesting lession with the Engineering Guy William (Bill) S. Hammack will fill this knowlege gap for sure 🙂

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