Absolute horizon — In general relativity, an absolute horizon is a boundary in spacetime, defined with respect to the external universe, inside of which events cannot affect an external observer. Light emitted inside the horizon can never reach the observer, and… … Wikipedia
Absolute threshold of hearing — The absolute threshold of hearing (ATH) is the minimum sound level of a pure tone that an average ear with normal hearing can hear with no other sound present. The absolute threshold relates to the sound that can just be heard by the… … Wikipedia
international trade — Introduction economic transactions that are made between countries. Among the items commonly traded are consumer goods, such as television sets and clothing; capital goods, such as machinery; and raw materials and food. Other transactions… … Universalium
Comparative advantage — Economics … Wikipedia
advantage — ad‧van‧tage [ədˈvɑːntɪdʒ ǁ ədˈvæn ] noun [countable, uncountable] something that helps you to be better or more successful than others: • America s lead in aerospace is one of its most important competitive advantages. • Government subsidies give … Financial and business terms
Circular buffer — A ring showing, conceptually, a circular buffer. This visually shows that the buffer has no real end and it can loop around the buffer. However, since memory is never physically created as a ring, a linear representation is generally used as is… … Wikipedia
Roman Republic — See also: Roman Republic (18th century) and Roman Republic (19th century) Roman Republic Official name (as on coins): Roma after ca. 100 BC: Senatus PopulusQue Romanus ( The Senate and People of Rome ) … Wikipedia
Chess tactics — In chess, a tactic refers to a sequence of moves which limits the opponent s options and may result in tangible gain. Tactics are usually contrasted with strategy, in which advantages take longer to be realized, and the opponent is less… … Wikipedia
Social mobility — Sociology … Wikipedia
education — /ej oo kay sheuhn/, n. 1. the act or process of imparting or acquiring general knowledge, developing the powers of reasoning and judgment, and generally of preparing oneself or others intellectually for mature life. 2. the act or process of… … Universalium
HEBREW LANGUAGE — This entry is arranged according to the following scheme: pre biblical biblical the dead sea scrolls mishnaic medieval modern period A detailed table of contents precedes each section. PRE BIBLICAL nature of the evidence the sources phonology… … Encyclopedia of Judaism