The logical question as a follow-up is where is that wavelength in nm where the classical equations start to overlap at the quantum level in the gamma electromagnetic spectra? What are those freqencies and wavelengths in the gamma spectra that require quantum considerations?What does the electromagnetic spectum of high energy gamma radiation look like.

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Techniques and applications of quantum theory

Quantum theory, often known as quantum physics, is the foundation of modern physics and encompasses the nature and behavior of matter and energy at the atomic and molecular levels. As the exact nature and behavior of atomic and subatomic particles are impossible to determine, the laws of classical physics do not apply to this discipline. As a result, quantum field theory is primarily based on assumptions and probabilities.