Chinese scientists have made the first direct observation of a quantum effect that was proposed almost 90 years ago and could help detect dark matter, the universe’s invisible “glue”.
Soviet physicist Arkady Migdal developed a theory in Leningrad in 1939 about what would happen when a neutral particle – such as dark matter – collided with an atomic nucleus.
Migdal believed that the collision would cause the nucleus to recoil and trigger a secondary electronic recoil, generating a detectable…
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