Optical Novelty Filters

Jack Feinberg

Optical computers have been promoted as the remedy for the bottlenecks of electronic computers, but as Top: Protozoa without novelty filter. Algae is also visible. Bottom: Protozoa seen with novelty filter. Algae in background is no longer seen. yet no one has made a digital optical computer that can perform even the simplest of tasks, such as adding two 2-digit numbers. Analog optical computers are much easier to make than digital optical computers, and for some applications analog computers are better. A frog, for example, uses an analog computer to quickly compute the velocity and the predicted position of a careless fly, and the frog obviously does not need a digitally-precise value for the fly's velocity.

Log in or become a member to view the full text of this article.

This article may be available for purchase via the search at Optica Publishing Group.
Optica Members get the full text of Optics & Photonics News, plus a variety of other member benefits.

Add a Comment