News tagged with quantum mechanics

Seeing quantum motion

Consider the pendulum of a grandfather clock. If you forget to wind it, you will eventually find the pendulum at rest, unmoving. However, this simple observation is only valid at the level of classical physics—the laws ...

dateAug 28, 2015 in Quantum Physics
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Quantum correlation can imply causation (Update)

Does taking a drug and then getting better mean that the drug made you better? Did that tax cut really stimulate the economy or did it recover on its own? The problem of answering such questions - of inferring causal relationships ...

dateMar 23, 2015 in Quantum Physics
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