Classical physics does not handle phenomena that occur at very small scales or high energies. Specifically, the areas classical physics does not address include:
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Subatomic Particles: Classical physics cannot explain the behavior of particles like electrons, protons, and photons, which are governed by quantum mechanics.
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9: Classical physics fails to explain phenomena like wave-particle duality, superposition, and quantum entanglement.
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High-Speed Motion (Relativity): Classical physics, such as Newtonian mechanics, does not account for the effects of special relativity or general relativity, which are necessary at speeds close to the speed of light or in strong gravitational fields.
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Extreme Gravitational Fields: Classical physics does not explain phenomena in extremely strong gravitational fields, like near black holes, where general relativity is needed.