Wave-Particle Duality
The peculiar nature of microscopic particles exhibiting both wave-like and particle-like properties — this is the core concept of quantum mechanics and the key to understanding the mysteries of the microscopic world.
Wave Nature
Microscopic particles exhibit wave properties, capable of producing interference and diffraction phenomena. When electron beams pass through crystals, clear diffraction patterns are produced, demonstrating the wave nature of electrons.
Particle Nature
Energy and momentum exist in discrete quantum forms. Einstein successfully explained the photoelectric effect using the concept of light quanta (photons), proving the particle nature of light.
Complementarity Principle
Niels Bohr pointed out: Wave and particle properties are two complementary manifestations of microscopic objects. They cannot be precisely measured simultaneously, but alternate under different experimental conditions.
🎮 Interactive Experiment
🔬 Double-Slit Interference Experiment Simulation — Explore the Mystery of Wave-Particle Duality
Photoelectric Effect
Einstein proposed the quantum theory of light, perfectly explaining the photoelectric effect experiment using the concept of photons. The energy of a photon is E = hν, where ν is the frequency of light. This discovery earned him the Nobel Prize in Physics.
Electron Diffraction
The experiments by Davisson and Germer confirmed that electron beams diffract on the surface of nickel crystals, directly proving de Broglie's matter wave hypothesis: moving electrons also have wavelength.
Uncertainty Principle
Heisenberg pointed out: The position and momentum of a particle cannot be precisely measured simultaneously. Δx·Δp ≥ h/4π. This is the mathematical expression of wave-particle duality, revealing the fundamental limitations of the microscopic world.