Title: Observing The Universe Really Does Change The Outcome, And This Experiment Shows How
Headings: Observing The Universe Really Does Change The Outcome, And This Experiment Shows How
Observing The Universe Really Does Change The Outcome, And This Experiment Shows How
Content: Instead, it's replaced by just two piles of electrons: the paths you'd expect each electron to take if there were no interference at all. What's going on here? It's as though the electrons "know" whether you're watching them or not. The very act of observing this setup — of asking "which slit did each electron pass through?" — changes the outcome of the experiment. If you measure which slit the quantum passes through, it behaves as though it passes through one and only one slit: it acts like a classical particle. If you don't measure which slit the quantum passes through, it behaves as a wave, acting like it passed through both slits simultaneously and producing an interference pattern. What's actually going on here?