The History of Neutrino Detection: From Pauli's Prediction to Project Poltergeist
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By Simon Frantz June 24, 2026
Summary
This article from Quanta Magazine recounts the history of neutrino physics, from the 1930 prediction of the neutrino by Wolfgang Pauli to explain missing energy in beta decay, through Clyde Cowan and Frederick Reines' 1956 "Project Poltergeist" experiment that first detected the elusive particle. It describes the challenges of detecting neutrinos due to their ghostly nature (passing through matter almost undisturbed), the ingenious experimental setups required, and the broader significance of neutrino research in understanding fundamental physics.
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· 3 pulledSeventy years ago, the physicists Clyde Cowan and Frederick Reines took a custom-built 10-ton detector, surrounded it with thick lead walls and wet sandbags, and placed it near a powerful nuclear reactor at the Savannah River Plant in South Carolina.
They called the experiment 'Project Poltergeist,' designed as it was to catch a ghost.
More than a quarter of a century before, physicists had been puzzling over why energy appeared to be lost during a radioactive process called beta decay.
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