Random Accesses

If the resurgence of 3D glasses at local cinemas are any indication, we all want a bit more, ahem, depth to our cinematic experience. Unfortunately, the stylish glasses don't exactly lend themselves to an immersive experience. What would be really cool would be animated holograms.

While holograms aren't the easiest things in the world to make, it is possible to take a 3D computer model and compute the data necessary to generate a hologram that can be used to project a 3D image from a screen. Given that animation is largely computer generated now anyway, where are my holographic animated movies?

One of the problems turns out to be efficient rendering. A recent paper in Optics Express, although it presents a huge speed-up in holographic rendering, demonstrates just how difficult the problem is. The basic animation is now well within the reach of modern rendering farms—unfortunately, that doesn't leave any power left to put into important things like shading, lighting, and shadows (much less character and plot).

Source: http://arstechnica.com/hardware/news/2009/08/holographic-gpu-renders-at-near-real-time-speeds.ars

DRIVING through the countryside south of Hanover, it would be easy to miss the GEO600 experiment. From the outside, it doesn't look much: in the corner of a field stands an assortment of boxy temporary buildings, from which two long trenches emerge, at a right angle to each other, covered with corrugated iron. Underneath the metal sheets, however, lies a detector that stretches for 600 metres.

For many months, the GEO600 team-members had been scratching their heads over inexplicable noise that is plaguing their giant detector. Then, out of the blue, a researcher approached them with an explanation. In fact, he had even predicted the noise before he knew they were detecting it. According to Craig Hogan, a physicist at the Fermilab particle physics lab in Batavia, Illinois, GEO600 has stumbled upon the fundamental limit of space-time - the point where space-time stops behaving like the smooth continuum Einstein described and instead dissolves into "grains", just as a newspaper photograph dissolves into dots as you zoom in. "It looks like GEO600 is being buffeted by the microscopic quantum convulsions of space-time," says Hogan.

If this doesn't blow your socks off, then Hogan, who has just been appointed director of Fermilab's Center for Particle Astrophysics, has an even bigger shock in store: "If the GEO600 result is what I suspect it is, then we are all living in a giant cosmic hologram.

Source: http://www.newscientist.com/article/mg20126911.300-our-world-may-be-a-giant-hologram.html?DCMP=OTC-rss&nsref=online-news