What is Reality? (ONLY Feynman Can Explain)
# The Double-Slit Experiment: The Simple Test That Shattered Our Reality ## A Quantum Shockwave in Two Slits Imagine firing electrons one at a time through a barrier with two slits, expecting them to act like tiny bullets and form two neat bands on a screen behind. Instead, they create an intricate pattern of light and dark bands—an unmistakable signature of waves interfering with themselves. This isn't science fiction; it's the double-slit experiment, a setup over 200 years old that reveals the quantum world's deepest mystery: reality isn't fixed until observed. What seems solid and predictable dissolves into probabilities, forcing us to rethink existence itself. --- ## The Setup and the Impossible Result The double-slit experiment begins with a straightforward apparatus: a source fires electrons (or photons, atoms, even large molecules) one by one at a barrier pierced by two narrow slits, with a detector screen behind. - **Particle Expectation**: If electrons are ...