I was on holiday in Jersey and visited , in Gorey. In one of the rooms there was a strange light display. The room was darkened and there were small spots of moving red light projected on the floor, walls and ceiling. There was also a vertical white light (see photo). It didn’t seem particularly impressive until, as you glanced away from the vertical white light, in the corner of your eye it expanded briefly into a picture of Queen Elizabeth II. When you looked back, it was a simple vertical white light again. Not everybody present could see the picture, but probably around two-thirds did. What was happening, and how was the picture produced?
Pierre Castry, St Malo, France