🔬 Discovery

Atmospheric neutrinos at Kolar Gold Fields

Neutrinos atmosféricos en las minas de Kolar

Date
1965 · confidence high
Place
Kolar Gold Fields, Kolar, Karnataka, India
Credited to
TIFR-Osaka University-Durham University collaboration
Field
Cosmos & Earth

⚠️ Disputed: the sources disagree.

What was discovered

Detectors placed 2.3 km underground recorded muons produced by neutrinos created by cosmic rays in the atmosphere. It was, together with the East Rand experiment, the first observation of atmospheric neutrinos.

The Reines group at the East Rand mine (South Africa) published its results almost simultaneously; both are regarded as co-discoverers.

What it led to

  • physics of atmospheric neutrinos
  • deep underground laboratories
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Sources✓ verified 2026-09-25