Quantum Symphony: The Triple Counterpoint of Music, Mathematics, and Physics — Extended into a Transdisciplinary Sonata of Society, Mind, and Technology

Planck's Constant in the Quantum World In the quantum world, "Planck's constant" (symbol ℎ) represents the minimum unit size of energy exchange, especially when light or particles interact with electromagnetic waves: • When light emits or absorbs energy at frequency f, its energy is not continuous but increases or decreases in jumps, such as: E = hf This means: each time you can only "emit" or "receive" one unit of energy "hf," not anything smaller. The core meaning is: energy in the microscopic world is "quantized"—not continuous, but existing in jumps. A Natural and Beautiful Metaphor Let's use a very natural and beautiful metaphor: " Planck’s constant is like a kind of musical tuning in the quantum world. It prevents energy in the universe from flowing continuously, instead dividing it into distinct “notes” with specific values. Just as a piano breaks an octave into discrete keys, energy exchanges occur not smoothl...