A hologram is a 3-dimensional image. The idea of holographic photography was introduced from 1947 by Dennis Gabor, who won a Nobel Prize for his efforts. The actual building of a hologram had to wait patiently until 1965, following the creation of the laser beam, when Emmett Leith and Juris Upatnicks made the first powerful holographic images. For your Soul Surfer, one of the fascinating things about holograms is they're assembled of waves. Take a pebble and drop it in the water. The pebble disturbs those surface of those water and produces a series of waves which spread out in nice fine concentric circles.
Take another pebble and dip it from the water somewhere else. When these waves fulfill other waves, they create what's called an interference pattern. They interfere together and break into an intricate pattern of peaks and troughs. To the naked eye, what was formerly a smooth chain of waves becomes a mixture of waves, but it's been shown that this apparently chaotic jumble also adheres to a blueprint. Even when we make a hailstorm in sea, the resulting interference blueprint on the surface of the sea stays a blueprint. In case of a hologram made with light beams, the interference blueprint created by the laser beam and after that stored on a special type of movie is what creates the eerily realistic holographic picture potential.