First to file and first to invent — are legal concepts that define who has the right to the grant of a patent for an invention. The first to file system is used in the majority of countries, with the notable exception of the United States, which operates a first to invent system. [ … Wikipedia
First Nations — This article is about the indigenous peoples of Canada. For other indigenous peoples, see Indigenous peoples by geographic regions. First Nations … Wikipedia
First Party System — The First Party System is a term of periodization used by some political scientists and historians to describe the political system existing in the United States between roughly 1792 and 1824. It featured two national parties competing for… … Wikipedia
invent */*/ — UK [ɪnˈvent] / US verb [transitive] Word forms invent : present tense I/you/we/they invent he/she/it invents present participle inventing past tense invented past participle invented Collocations: If you are the first person to make a new type of … English dictionary
First flying machine — There are conflicting views as to what was the first flying machine. This kind of controversy of invention is not limited to flight. For example, debates over the tallest building tend to break into debates around what constitutes a building and… … Wikipedia
Martingale (betting system) — For the generalised mathematical concept, see martingale (probability theory). Originally, martingale referred to a class of betting strategies popular in 18th century France. The simplest of these strategies was designed for a game in which the… … Wikipedia
rocket and missile system — ▪ weapons system Introduction any of a variety of weapons systems that deliver explosive warheads to their targets by means of rocket propulsion. Rocket is a general term used broadly to describe a variety of jet propelled missiles… … Universalium
Ground proximity warning system — (GPWS) is a system designed to alert pilots if their aircraft is in immediate danger of flying into the ground or an obstacle. Another common name for such a system is ground collision warning system (GCWS). Commercial aircraft The system… … Wikipedia
Voting system — For other uses, see Voting system (disambiguation). Part of the Politics series Electoral methods … Wikipedia
Binary numeral system — Numeral systems by culture Hindu Arabic numerals Western Arabic (Hindu numerals) Eastern Arabic Indian family Tamil Burmese Khmer Lao Mongolian Thai East Asian numerals Chinese Japanese Suzhou Korean Vietnamese … Wikipedia
Expert system — In artificial intelligence, an expert system is a computer system that emulates the decision making ability of a human expert.[1] Expert systems are designed to solve complex problems by reasoning about knowledge, like an expert, and not by… … Wikipedia