Chronovisor

The Chronovisor (from Italian cronovisore) is a device that allegedly enables users to see and hear scenes from the past via an unknown process involving harmonic resonance. It is said to have been developed in Italy by a group that included Benedictine musicologist and exorcist Pellegrino M. Ernetti, who first made public the invention in an interview with Vincenzo Maccaloni in 1972 for the Italian weekly newspaper La Domenica del Corriere.