Double-Slit Experiment: How a Simple Setup Revealed the Quantum World

The double-slit experiment is the most famous demonstration of quantum weirdness. Light and particles create interference patterns when not measured — but the pattern disappears the moment you observe which path they take. This reveals superposition, wave-particle duality, and the role of measurement in quantum mechanics. Richard Feynman called it the heart of quantum mechanics. See why this simple experiment underpins quantum computing, interference, and our modern understanding of reality. Clear, honest breakdown. #DoubleSlitExperiment #QuantumMechanics