In the 1990s the ITC researchers in Luxembourg set up a video feedback system with a video camera aimed at an old disconnected black and white TV, with the output of the camera fed back (via cable) into the TV… creating a feedback loop… and then adjusted to cause a churning cloud of noise on the screen.

Out of that noise can come a spirit image…This one, only one second long, shows Marie Mreches, who before her death was known to the researchers, emerging from an ocean in the spirit world.