Opera Limited is a Norwegian multinational technology conglomerate holding company headquartered in Oslo, Norway with additional offices in Europe, China, and Africa.
The Oscillation Project with Emulsion-tRacking Apparatus was an instrument used in a scientific experiment for detecting tau neutrinos from muon neutrino oscillations.
Opera is a 1987 Italian giallo directed and co-written by Dario Argento and starring Cristina Marsillach, Urbano Barberini, Daria Nicolodi, and Ian Charleson.
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