Contrary to everyday intuition, particles such as photons and electrons do not follow a single path but instead explore all possible trajectories. This is explained by the principle of least action, where only the paths that constructively interfere are observed. This reveals the hidden complexity of quantum behavior.
- action in physics
- classical mechanics
- diffraction and interference
- Hamiltonian mechanics
- Lagrangian framework
- light movement
- light reflection
- Maupertuis principle
- modern physics
- particle motion
- photon trajectories
- principle of least action
- quantum behavior
- quantum electrodynamics (QED)
- quantum mechanics
- Richard Feynman path integral
- sum over histories
- unification of physics
- veritasium
- wave interference
- wave-particle duality
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