Has vacuum birefringence been seen at long last?

· Physicsworld · Aug. 17, 2026, 11:17 a.m.
Summary
The blog post discusses the potential observation of vacuum birefringence through polarized X-rays emitted from a magnetar, which may represent the first direct observation of this quantum effect. It highlights the significance of this finding in the field of physics and its implications for our understanding of quantum phenomena. This post appeared originally on Physics World.
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