Quantum electrodynamics in the dark
Aug 1, 2001
Highly charged ions produce immense electrical fields that can disrupt the fundamental electrical structure of space itself. The theory of quantum electrodynamics (QED) describes this effect in detail and predicts the resulting shifts that should occur in the wavelengths of light that atoms emit. But a new kind of QED promises to probe these ions very precisely - and without a photon in sight.
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