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News From the Field

Experimental Quest to Test Einstein's Speed Limit


July 29, 2013

dysprosium, a rare-earth element Special relativity states that the speed of light is the same in all frames of reference and that nothing can exceed that limit. University of California, Berkeley, physicists used a novel experimental system--the unusual electron orbitals of dysprosium--to test whether the maximum speed of electrons follows this rule. The answer is yes, to tighter limits than ever before. They are planning another experiment a thousand times more sensitive, approaching the realm where theory may break down Full Story

Source
University of California, Berkeley

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