Défi de Monsieur Chicoine mardi 22 mars 2022

Dr. Theodore H. Maiman, of Hughes Research Laboratories studies a ruby crystal in the shape of a cube in a laser (Light Amplification by Simulated Emission of Radiation) which is the essential element in a new electronic device. The ruby absorbs light then casts a laser beam: a clear and intense beam of light which is "brighter than the center of the sun." New York City, New York

Une question de culture générale dans le monde des sciences!

Défi de Monsieur Chicoine mardi 22 mars 2022

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