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• Joseph Saxton — (1799 1873) was an American inventor, born at Huntingdon, Pa. He went to Philadelphia in 1817 and while there invented a machine for cutting the teeth of marine chronometer wheels, and an escapement and compensating pendulum for clocks, and… …   Wikipedia

• Operational amplifier — A Signetics μa741 operational amplifier, one of the most successful op amps. An operational amplifier ( op amp ) is a DC coupled high gain electronic voltage amplifier with a differential input and, usually, a single ended output.[1] An op amp… …   Wikipedia

• Hinman Collator — The Hinman Collator, an early optical collator, was an opto mechanical device for comparing pairs of documents for differences in the text. Documents that appeared similar were said to “collate”. The collator resulted in rapid advances in the… …   Wikipedia

• Identity control theory — Identity Control Theory, created by Peter Burke, focuses on the nature of peoples identities and the relationship between their identities and their behavior within the realm of their social structure. The identities of the individual are rooted… …   Wikipedia

• infrared guidance — A method of guidance in which an IR (infrared) seeker cell and a combined optics and flight control system act to home the vehicle onto the heat source. The illustration indicates the operation of an infrared guidance system. If the missile is… …   Aviation dictionary

• Observational astronomy — Mayall telescope at Kitt Peak National Observatory Observational astronomy is a division of the astronomical science that is concerned with getting data, in contrast with theoretical astrophysics which is mainly concerned with finding out the… …   Wikipedia

• Hardware random number generator — This SSL Accelerator computer card uses a hardware random number generator to generate cryptographic keys to encrypt data sent over computer networks. In computing, a hardware random number generator is an apparatus that generates random numbers… …   Wikipedia

• Laser cutting — process on a sheet of steel. CAD (top) and stainless steel laser cut part (bottom) Laser cutting is a technology that uses a laser to cut materials, an …   Wikipedia

• List of Doctor Who items — This is a list of items from the BBC television series Doctor Who. Contents: Top · 0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0–9 …   Wikipedia

• Grand Prix Legends — Traduction à relire Grand Prix Legends → …   Wikipédia en Français

• Nissan Micra — Manufacturer Nissan Also called Nissan March (Asia) Datsun Micra Nissan Verita (Taiwan) Production 1982–present …   Wikipedia