Technology Article 2/5

The article "Cheap Holograms Could Give Rise To Glasses Free 3D TVs," is about large affordable holographic video displays that may be possible to develop. Holograms are a "special kind of 2D photograph, when lit up create the illusion of a 3D image." The pixels of each hologram are scattered light, falling on to the pixels in specific ways in which the light waves interact with one another creating a 3D image. This kind of hologram is also known as a Static Hologram. The other type of hologram that scientist are trying to  make is an actual holographic video. In order for this to be possible, scientist would have to display a way to alter the pixels to bend the light. The only problem is there is no easy and cheap way to get the pixels as small as the light waves. Scientist have been experimenting with sound waves and other ways to try and get the light to bend. They have found cheaper versions of  crystals of tellurium oxide for $2 when the real version cost $25,000. The cheap crystals generate high resolution videos. In order for the holographic image to generate lasers of three colors are launched into each waveguide. The frequency of the acoustic waves passing through each crystal determines which color passes through. The light waves will then interact with each other creating a holographic image. http://www.livescience.com/49675-holographic-videos-3d-tvs.html