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This review discusses the introduction of light quantum, influencing physics foundations and applications.
In the beginning of 20th century, the successful introduction of the concept of light quantum, or photon, inspired a new foundation of physics, namely, the quantum theory. Today, quantum theory has turned out to be the overarching principle of modern physics. It would be difficult to find a single subject among the physical sciences which is not affected in its foundations or in its applications by quantum theory.
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Yanhua Shih (2025) studied this question.
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