Precise testing of quantum electrodynamics https://www.mpg.de/20922980/precise-testing-of-quantum-electrodynamics?c=12642524
Until now, these magnetic properties could only be measured very well for free electrons. Here, measurement results and theory agree to within ten decimal places. A research team at the Max Planck Institute for Nuclear Physics in Heidelberg has now confirmed with precision measurements from the Alphatrap experiment that these predictions of quantum electrodynamics also apply where electrons are exposed to strong electric fields, namely inside heavy atoms, in the immediate vicinity of the atomic nucleus.
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