Users manipulate images using tools that exist partly as real objects and partly as virtual tools.
It is like nothing else we have seen before, claims Slinger. A hologram is essentially an interference pattern generated from the object being depicted. When light strikes the hologram it is diffracted, forming a series of wavelets. Interference between these wavelets produces wavefronts that simulate the light that would have come from the original object. But with a computer generated hologram it is possible to produce interference patterns that simulate the waves from an object hanging in empty space.