an apparatus, as a special table or rigid beam, for the precise positioning of light sources, screens, and optical instruments used for optical and photometric studies, having a ruled bar to which these devices can be attached and along which they can be readily adjusted.
an apparatus fitted for experimentation in optics, typically consisting of a table and an adjustable arrangement of light source, lenses, prisms, etc
- Optical brightener
noun a chemical substance added to detergents to produce a whitening or brightening effect in fabric or paper Examples Optical brighteners are dyes that absorb light in the ultraviolet and violet region of the electromagnetic spectrum, and re-emit light in the blue region.
- Optical carrier 12
networking (OC-12) A SONET rate of 12 * 51.84 = 622.08 megabits per second. [Matches STS-12]? (1997-05-26)
- Optical carrier 3
networking (OC-3) A SONET rate of 3 * 51.84 = 155.52 megabits per second, which matches STS-3. (1997-02-05)
- Optical carrier 48
networking (OC-48) A SONET rate of 48 * 51.84 = 2488.32 megabits per second. [Matches STS-48]? (1997-05-26)