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It is unknown how quantum and classical mechanics relate to each other, but new research with piezoelectric crystals, published in Nature (1 July 2010), has shown that quantum behaviour can have a significant effect on classical behaviour. The scientists didn't start out to show this – they were trying to measure fast changes in charge at nanometer scales.
The scientists had made 'quantum point contacts' (QPC) using semiconductor crystals made of gallium arsenide, which...
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