Saturday, September 26, 2020
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‘Quantum microphone’ detects sound at the atomic level

Phonons have previously been impossible to measure because traditional microphones are not nearly sensitive enough to pick them up. A microphone works by detecting when a sound wave interacts with a membrane, but the phonons are so small that they can't be detected individually due to the Heisenberg Uncertainty Principle.Instead of relying on indirect measurement…

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