As technology continues to progress, we are given the opportunity to explore new and more exotic types of programming, software, hardware, and systems. One innovation that is growing at a rapid pace is hologram technology.
What Exactly Are Holograms?
Holography is a photographic technique that records the light scattered from an object, and then presents it as three-dimensional.
Holograms of varying forms have appeared over the years, including transmission holograms, which allow light to be shined through them and the image to be viewed from the side, and rainbow holograms, like those used on credit cards and driver’s licenses for increased security.
The development of hologram technology began in 1962, when Yuri Denisyuk, of the Soviet Union, and Emmett Leith and Juris Upatnieks, at the University of Michigan, developed innovative laser programs that recorded objects in 3D. They recorded on silver halide photographic emulsions at the time, but the clarity of the objects was far from perfect. But new methods have improved holograms over time.
Are Holograms for Real?
Holograms are as close as your wallet. Most driver’s licenses include holograms, as well as ID cards and credit cards. Holograms can even be found throughout our houses. Holograms come as part of CD, DVD, Blu-Ray, and software packaging, as well as nearly everything sold as “official merchandise.”
But, these security holograms — which discourage forgery — aren’t impressive. They simply change shape and color when tilted.
However, large-scale holograms, the kind illuminated with lasers or created in a dark room with carefully placed lighting, are phenomenal. They’re basically two-dimensional surfaces that show very accurate three-dimensional images of real objects. You don’t even have to wear special glasses like when you go to a 3D movie.
Holograms have surprising features. For example, each half contains whole views of the entire holographic image. The same is true if you cut out a small piece. Even a small fragment will still house the entire picture.
Understanding the principles behind holograms, helps you understand that the hologram, your brain, and light waves work together to make clear, 3D pictures.