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Nature 452, 298-299 (20 March 2008) | doi:10.1038/452298a; Published online 19 March 2008
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Quantum physics: Disturbance without the force
Akira Tonomura1 & Franco Nori2
Abstract
Charged particles influenced by electromagnetic fields, even when the two never touch? Surely, it can only be quantum physics. But surprisingly, the quantum nature of this particular effect has been disputed.
In the phenomenon known as the Aharonov–Bohm effect, magnetic forces seem to act on charged particles such as electrons — even though the particles do not cross any magnetic field lines. Is this evidence for electromagnetic forces that work in new and unsuspected ways?
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