Explainer
What Is the Measurement Problem in Quantum Mechanics?
Quantum theory has two rules for how states change and no agreed account of when the second one applies. A century on, experiments are finally narrowing the options.
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interpretations of quantum mechanics
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Explainer
What Is Schrödinger’s Cat?
Schrödinger's cat is the most famous image in quantum physics, and it is almost always told backwards. In 1935 Erwin Schrödinger did not claim a cat could be alive and…
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