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Physics behind lasers: operation and uses

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La physique derrière les lasers : fonctionnement et usages

IN BRIEF Fundamental principle: stimulated emission, discovered by Albert Einstein. Structure: a laser includes a material medium and a pumping system. Light coherence: the produced photons have identical characteristics. Diverse applications: fundamental research, industry, telecommunications, medicine. Beam properties: confinement of the wave by reflecting mirrors. The physics behind lasers constitutes a fascinating and complex field … Read more

How do smartphones work through physics?

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Comment fonctionnent les smartphones grâce à la physique ?

IN BRIEF Sensors present in smartphones: accelerometers, magnetometers, gyroscopes, etc. Use of physical laws to measure speed, acceleration, and other parameters. Smartphones as mini-laboratories for scientific experiments. Application of quantum physics in smartphone technology. Impact of mobile technology on our understanding of physical phenomena. Possibility of scientific popularization through educational applications. Smartphones, these ubiquitous devices … Read more

How does a power plant work?

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Comment fonctionne une centrale électrique ?

IN BRIEF Power plant: transformation of primary energy into electrical energy. Types of plants: thermal, nuclear, hydroelectric, wind. Turbine: captures primary energy to produce motion. Generator: converts mechanical energy into electrical energy. Energy transformation: essential for the operation of power plants. Thermal power plant: uses steam or combustion of gas. Hydroelectric power plant: harnesses the … Read more