How Do Lasers Work?

Lasers can cut through steel quickly. They work by controlling photon emissions from atoms. When energy excites an atom, it emits photons as it returns to its ground state. Lasers use a crystal with mirrors to amplify these photons, creating a coherent light beam. First demonstrated in 1960, lasers are now used in electronics, manufacturing, and medicine, capable of precise tasks like eye surgery.

Describe the structure of a simple laser.

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List some applications of lasers in everyday life.

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