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Wave-Particle Duality

A fundamental concept in quantum physics is wave-particle duality. It states that particles, such as electrons and photons, can exhibit properties of both waves and particles.

Classical physics treats these entities distinctly: waves spread out and carry energy, while particles are localized points with mass. However, experiments like the double-slit experiment demonstrate this dual nature.

λ = h/p  (where λ is wavelength, h is Planck's constant, and p is momentum)

Quantum Entanglement

Quantum entanglement describes a phenomenon where two or more particles become linked together in such a way that they share the same fate, no matter how far apart they are.

Measuring the properties of one entangled particle instantaneously determines the corresponding properties of the other, even if they are separated by vast distances. This correlation is not due to any physical connection between the particles but rather to their shared quantum state.

Ψ = c₁|ψ₁⟩ + c₂|ψ₂⟩ (where Ψ is the wave function, c₁ and c₂ are complex coefficients, and |ψ₁⟩ and |ψ₂⟩ are possible quantum states)

Quantum Entanglement

Entanglement occurs when two or more particles become linked in such a way that they share the same fate, no matter how far apart they are. Measuring the state of one instantly influences the state of the other.

This ‘spooky action at a distance,’ as Einstein called it, doesn’t allow for faster-than-light communication but highlights the interconnectedness of quantum systems.

The correlation between entangled particles is described by a shared wave function.

Quantum Measurement

The act of measurement fundamentally alters the system being observed. When we measure a quantum property, like position or momentum, the superposition collapses into one definite state.

This is known as wave function collapse and remains one of the most debated aspects of quantum mechanics.

Frequently asked questions

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