Aspect and his team carried out their famous experiment for pairs of photons that had been separated by several meters in his laboratory, far enough away that not even an influence traveling at the speed of light—and relativity tells us that nothing can travel faster than the speed of light—could have passed between them to coordinate their angles of polarization. Yet the measurements on paired particles were correlated: when one photon’s polarization was pointing up, the other’s was found to point down. Since 1982, the experiment has been repeated even for particles separated by hundreds of
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