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OPAL was one of the 4 experiments at CERN's Large Electron Positron collider (LEP) which ran from 1989 - 2000. This array of 96 lead glass bricks formed part of the OPAL electromagnetic calorimeter. In total, there were 9440 lead glass counters in the OPAL electromagnetic calorimeter, made of Schott type SF57 glass and each block weighs about 25 kg and consists of 76% PbO by weight. Each block has a Hamamatsu R2238 photomultiplier glued on to it. The complete detector was in the form of a cylinder 7m long and 6m in diameter. It was used to measure the energy of electrons and photons produced in LEP electron positron collisions.

OPAL was one of the 4 experiments at CERN's Large Electron Positron collider (LEP) which ran from 1989 - 2000. This array of 96 lead glass bricks formed part of the OPAL electromagnetic calorimeter. In total, there were 9440 lead glass counters in the OPAL electromagnetic calorimeter, made of Schott type SF57 glass and each block weighs about 25 kg and consists of 76% PbO by weight. Each block has a Hamamatsu R2238 photomultiplier glued on to it. The complete detector was in the form of a cylinder 7m long and 6m in diameter. It was used to measure the energy of electrons and photons produced in LEP electron positron collisions.

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The Pauli Archive is a collection of the scientific books, reports, reprints, correspondence and manuscripts of the Nobel Prize-winning physicist, Wolfgang Pauli (1900-1958). The collection contains some photographs and various personal items such as his awards and the baptismal cup given to him by his godfather Ernst Mach. Subjects discussed include physics and wider philosophical, psychological and epistemological issues.

The Pauli Archive is a collection of the scientific books, reports, reprints, correspondence and manuscripts of the Nobel Prize-winning physicist, Wolfgang Pauli (1900-1958). The collection contains some photographs and various personal items such as his awards and the baptismal cup given to him by his godfather Ernst Mach. Subjects discussed include physics and wider philosophical, psychological and epistemological issues.