Saturday, October 5, 2013

Holographic Projections: Rohan Kadambi, Nick Moore, Chris Wiggins (Period 1)

Holographic Projection
Rohan Kadambi, Nick Moore, Chris Wiggins
Period 1



  "The lights went dim!
They didn't go out, but merely yellowed and sank with a suddenness that made Hardin jump.
He had lifted his eyes to the ceiling lights in startled fashion, and when he brought them down
the glass cubicle was no longer empty.
A figure occupied it ‚ a figure in a wheel chair!
It said nothing for a few moments, but it closed the book upon its lap and fingered it idly. And
then it smiled, and the face seemed all alive.
It said, 'I am Hari Seldon.' The voice was old and soft" (Part 2, Chapter 7).

  Holograms are commonly used projections in many science fiction stories like here in Foundation or in movies like Star Wars. Holograms are the three dimensional equivalent of pictures; ideally, holograms show an exact three dimensional "picture" of some object. This piece of science fiction technology is not all that crazy, it doesn't break any rules of physics, its just full of complicated vectors. Some real life holographic projectors do exists though they do not work perfectly. In science fiction, holograms usually are created from a single camera like source, and are viewable from all angles. In real life, at least for the moment this is not the case. Many of the holographic displays that appear to display objects with depth still require a screen to use and making holographic recordings is not easy. Although the first holographic recording of a person was made in 1971, it was not a speedy process. Collecting the data to display a hologram requires repeated pulsing of a laser and rather complicated collection equipment that stores the refraction patterns from all angles. The use of holograms in our lives has yet to make any real appearance. Perhaps in the future they will slowly begin to replace photos. Having a digital, 3-D representation of objects could prove to be useful. Software already exists to make three dimensional models of objects (CAD), but for now they can only be reviewed on computer monitors or printed in 3D printers. Holographic projectors would aid in reviewing these models and in planning to build other things.
  Also, holograms would look pretty awesome.

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