BBC Researchers Break Quantum Mechanics Complementarity Rule

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Report on the BBC:

"Researchers have bent one of the most basic Rules of Quantum Mechanics, a counterintuitive branch of physics that deals with atomic-scale interactions.

Its "complementarity" rule asserts that it is impossible to observe light behaving as both a wave and a particle, though it is strictly both.

In an experiment reported in Science, researchers have now done exactly that.

They say that the feat "pulls back the veil" on quantum reality in a way that was thought to be prohibited by theory."
 
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