1. Electromagnetic radiations emitted from a heat or light source as a consequence of its temperature; it consists essentially of ultraviolet, visible, and infrared radiations. [JP1]
2. The heat and light produced by a nuclear explosion. [JP1]

A measure, in kelvins (K), proportional to the thermal energy of a given body at equilibrium.
Note 1: A temperature of 0 K is called "absolute zero," and coincides with the minimum molecular activity (i.e., thermal energy) of matter.
Note 2: Thermodynamic temperature was formerly called "absolute temperature. "
Note 3: In practice, the International Temperature Scale of 1990 (ITS-90)… (Read More →)

Abbreviation for tremendously high frequency. See electromagnetic spectrum.

A server-centric computing model in which the application software, data, and CPU power resides on a network server rather than on the client computer(s).
Note 1: This computing philosophy allows administrators to purchase one relatively powerful and expensive server and be confident that any external terminal, regardless of its power or sophistication, can run applications on the server. Most "shopping"… (Read More →)

Computer programs that reside on a server and react to external requests from a client.
Note: This is in contrast to software that is installed on each client computer in a network. Software that resides only on a single server can be maintained and updated with minimal effort.

A laser that is constructed by thin-film deposition techniques on a substrate for use as a light source, is usually used to drive thin-film optical waveguides, and may be used in integrated optical circuits.

A modulator that consists of multilayered films of material of different optical characteristics, is capable of modulating transmitted light by using electro-optic, electro-acoustic, or magneto-optic effects to obtain signal modulation, and may be used as a component in integrated optical circuits. [From Weik '89]

A multiplexer that consists of multilayered films of material of different optical characteristics, is capable of multiplexing transmitted light by using electro-optic, electro-acoustic, or magneto-optic effects to obtain signal multiplexing, and may be used as a component in integrated optical circuits. [From Weik '89]

A switch that consists of multilayered films of material of different optical characteristics, that is capable of switching transmitted light by using electro-optic, electro-acoustic, or magneto-optic effects to obtain signal switching, and is usually used as a component in integrated optical circuits.
Note: Thin-film optical switches may support only one propagation mode. [From Weik '89]

A slab-dielectric waveguide that consists of multilayered films of material of different optical characteristics, is capable of guiding an optical signal, and may be used as a component in integrated optical circuits. [From Weik '89]