🌀Quantum physics vs Classical physics🍎
Physics has two great frameworks. One predicts the motion of planets and cars; the other governs the strange behavior of atoms.
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🌀Quantum physics
- ✓Describes the behavior of atoms and subatomic particles
- ✓Energy comes in discrete packets called quanta
- ✓Includes superposition, entanglement and uncertainty
- ✓Predictions are probabilistic, not exact
- ✓Underpins lasers, semiconductors and modern electronics
🍎Classical physics
- ✓Describes everyday-sized objects and motion
- ✓Treats energy as continuous, not quantized
- ✓Predictions are deterministic and exact
- ✓Built on Newton's laws and electromagnetism
- ✓Accurate for planets, vehicles and machines
Verdict
Classical physics works perfectly for the human-scale world and remains essential for engineering. Quantum physics takes over at atomic scales. Both are correct in their own domains.
Frequently asked
When does classical physics fail?+
At very small scales — atoms and particles — where quantum effects like superposition dominate.
Is quantum physics random?+
Its predictions are probabilistic; it gives the odds of outcomes rather than a single certain result.
Do they ever agree?+
Yes. For large objects, quantum predictions average out to match classical physics, called the correspondence principle.
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