A unit of distance corresponding to 1000m.

Abbreviation for kilometer.

In video, by convention, the circuitry introducing white compression into the opto-electronic transfer function and thereby modifying the curve for a more gradual approach to white clip. [After SMPTE]

In electromagnetic wave propagation, a redirection by diffraction of a portion of the incident radiation that strikes a well-defined obstacle such as a mountain range or the edge of a building.
Note: The knife-edge effect is explained by Huygens' principle, which states that a well-defined obstruction to an electromagnetic wave acts as a secondary source, and creates a new wavefront.… (Read More →)

Contraction of knowledge robot. A search tool that automatically seeks relevant online information based on the user's previously identified specifications. Synonyms droid, intelligent agent, personal agent, hotbot. [After Bahorsky]

A component of a search engine that collects information from Internet resources. [2832-35] Synonyms droid, infobot, robotic librarian, search robot.

1. An analytical attack in which a cryptanalyst possesses a substantial quantity of corresponding plain text and cipher text. [2382-pt.8]
2. A method of attack on a crypto system where the cryptanalyst has matching copies of plain text, and its encrypted version.

Key Performance Indicators

See noise power density.

Abbreviation for key telephone system.