This is the central equation of quantum theory, and describes how any quantum system will behave, and how its observable qualities are likely to manifest in an experiment.

Dive into the quantum world
For a quick dip into quantum physics, we recommend you browse our Quantum A to Z. You can also read what famous physicists have said about this famously puzzling physics theory. If you’re after more depth, check out our recommendations for popular science books and longer articles. And for the very latest quantum news, see what our media partners Scientific American and Nature are reporting.
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