What are those holograms called if not "hologram"?
October 11, 2004 1:20 PM Subscribe
Ever since I was a kid it's always baffled me what the technical term for those 'magic' rulers is - the ones that display an image, and as you tilt it in the light, it displays another, or multiple images, to give the impression the image is moving. They were usually cartoon based, depicting Transformers or some similar childhood cult characters. People always told me to accept they were called holograms and be done with it, but I am convinced they are not holograms, as holograms are a 3D image, or should I say give the illusion of a 3D image, which these rulers did not, only a moving image. Can anyone shed any light on the matter?