In the early 1960s, Ernetti began to study the writings of François Brune, himself a Roman Catholic priest and author. Ernetti allegedly ended up helping Brune construct the machine as members of a team which included twelve world-famous scientists. He identified two of them as Enrico Fermi and Wernher von Braun. The chronovisor was described as a large cabinet with a cathode ray tube for viewing the received events and a series of buttons, levers, and other controls for selecting the time and the location to be viewed. It could also locate and track specific individuals. According to its inventor, it worked by receiving, decoding and reproducing the electromagnetic radiation left behind from past events. It could also pick up the audio component or sound waves emitted by these same events.