Time Viewer

The time viewer is a fictional, oracle-like device occasionally imagined in science fiction. In many cases the time viewer resembles a television, except it shows the viewer events in another time, either the past or the future.

In his short story "The Dead Past" (1956), Isaac Asimov calls the device a chronoscope, but this is also the name that the Victorian-era scientist Charles Wheatstone gave to his invention for measuring small intervals of time.

Father François Brune, a French Catholic priest and author, relates in his book Le nouveau mystère du Vatican (2002) how an Italian priest invented a time viewer in the 20th century. He calls the machine the chronovisor.

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