The wave equation can be seen as infinitely many infinitesimal coupled oscillators

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The wave equation can be seen as infinitely many infinitesimal coupled oscillators by Ciro Santilli 34 Updated 2024-12-15 +Created 1970-01-01
TODO confirm, see also: coupled oscillators. And then this idea can be used to define/motivate quantum field theory in terms of quantum harmonic oscillators with second quantization.
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