August 12, 1999
CD's and DVD's are amazing technology, but Temple University physicist Zameer Hasan doesn't think it goes far enough. He believes there is a way to fit much, much more material on a disc, and is shooting around lasers of his own, vaporizing solids, and studying the optical properties of solids to find a way to do so.
When you listen to music on your CD changer, or watch a movie on your DVD player, or run software on your PC's CD-ROM drive, this is what happens: A laser--a narrow beam of light--reads the surface of the disc, which has been encoded either to reflect the light back or to let it pass through. The resulting snippet of digital information, represented by a "0" or a "1," constitutes a fraction of a musical note, a blink of a car chase, a flash of an outfielder hauling in a long fly ball.
The above story is based on materials provided by Temple University. Note: Materials may be edited for content and length.
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Temple University. "An Entire Library On One Compact Disc? Temple Physicist Is Studying Solids To Make It So." ScienceDaily. ScienceDaily, 12 August 1999. <www.sciencedaily.com/releases/1999/08/990812080706.htm>.
Temple University. (1999, August 12). An Entire Library On One Compact Disc? Temple Physicist Is Studying Solids To Make It So. ScienceDaily. Retrieved April 20, 2014 from www.sciencedaily.com/releases/1999/08/990812080706.htm
Temple University. "An Entire Library On One Compact Disc? Temple Physicist Is Studying Solids To Make It So." ScienceDaily. www.sciencedaily.com/releases/1999/08/990812080706.htm (accessed April 20, 2014).