Speed of sound — Sound is a vibration that travels through an elastic medium as a wave. The speed of sound describes how much distance such a wave travels in a certain amount of time. In SI Units with dry air at 20 °C (68 °F), the speed of sound is 343 m/s. This… … Wikipedia
Speed index — (sometimes Speed rating) is a system of rating the performance of Quarter Horse racehorses. The American Quarter Horse Association (or the AQHA) has used two systems over the history of Quarter Horse racing to evaluate racing performances. The… … Wikipedia
Speed of light — The speed of light in the vacuum of free space is an important physical constant usually denoted by the letter c . [NIST and BIPM practice is to use c 0 for the speed of light in vacuum in accord with international standard ISO 31 5. See… … Wikipedia
Mental calculation — comprises arithmetical calculations using only the human brain, with no help from calculators, computers, or pen and paper. People use mental calculation when computing tools are not available, when it is faster than other means of calculation… … Wikipedia
Delay calculation — is the term used in integrated circuit design for the calculation of the gate delay of a single logic gate and the wires attached to it. By contrast, static timing analysis computes the delays of entire paths, using delay calculation to determine … Wikipedia
Intelligent speed adaptation — (ISA) is any system that constantly monitors the local speed limit and the vehicle speed and implements an action when the vehicle is found to be exceeding the speed limit. This can be done through an advisory system, where the driver is warned,… … Wikipedia
Orders of magnitude (speed) — To help compare different orders of magnitude, the following list describes various speed levels between approximately 1×10−10 m/s and 3×108 m/s. Values in bold are exact. List of orders of magnitude for speed List of orders of… … Wikipedia
Safe Speed — [ thumbnail|right|Safe Speedroundel with the group s initials.] Safe Speed is a British pressure group. Safe Speed primarily campaigns against speed cameras, arguing that abiding by a speed limit does not guarantee safe driving, and that motoring … Wikipedia
Variable speed of light — The variable speed of light (VSL) concept states that the speed of light in a vacuum, usually denoted by c , may not be constant in some cases. In most situations in condensed matter physics when light is traveling through a medium, it… … Wikipedia
Beyer Speed Figure — The Beyer Speed Figure is a system for rating the performance of Thoroughbred racehorses in North America designed in the early 1970s by Andrew Beyer, the syndicated horse racing columnist for The Washington Post. First published in book form in… … Wikipedia
Dual speed focuser — The Dual speed focuser is focusing mechanism in precision optics such as advanced amateur astronomical telescopes or laboratory microscopes. Dual speed focuser can provide two focusing speed on a set of co axial knobs.One for fast focusing and… … Wikipedia