Quantum stopwatch could be the best in the universe

Noridzuan Mahfok/EyeEm/Getty By Anil Ananthaswamy A quantum stopwatch that measures time by avoiding all except one final measurement would be the most accurate allowed by nature, suggests a new study. To measure the time taken by a series of events, an everyday classical stopwatch measures the elapsed time for each event and adds them up. Each individual measurement does not disturb a classical clock. That’s not the case with a quantum clock. If you were to stop and restart a quantum stopwatch, effectively introducing measurements,
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