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Quantum mechanics

4 ideas, each explained on one page with a 60-second lesson you can play right there.

Heisenberg's Uncertainty Principle Heisenberg's Uncertainty Principle sets a fundamental limit on how precisely you can measure a particle's position and momentum at the same time.
Quantum Superposition Quantum superposition is the principle where a physical system exists in multiple possible states simultaneously until it is measured.
Quantum Tunneling Quantum tunneling is a physical process where a particle passes directly through an energy barrier it lacks the energy to climb over.
Wave-Particle Duality Wave-particle duality shows that fundamental objects like electrons and photons behave as waves or particles depending on how they are measured.