coordinate activity
121Mathematical discussion of rangekeeping — In naval gunnery, when long range guns became available, an enemy ship would move some distance after the shells were fired. It became necessary to figure out where the enemy ship, the target, was going to be when the shells arrived. The process… …
122Electro-gyration — The electrogyration effect is the spatial dispersion phenomenon, that consists in the change of optical activity (gyration) of crystals by a constant or time varying electric field. Being a spatial dispersion effect, the induced optical activity… …
123space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …
124animal behaviour — Introduction any activity of an intact organism. A living animal behaves constantly in order to survive, and all animals must solve the same basic problems. They must, for instance, periodically replace their energy source (consume… …
125nervous system disease — Introduction any of the diseases or disorders that affect the functioning of the human nervous system (nervous system, human). Everything that humans sense, consider, and effect and all the unlearned reflexes of the body depend on the… …
126ARGENTINA — ARGENTINA, South American Federal Republic, general population (2004) 39,150,000; Jewish population 190,000. This entry is arranged according to the following outline: colonial period modern period legal basis for jewish life history EARLY JEWISH …
127DEFENSE FORCES — Ottoman and Mandatory Periods (1878–1948) The development of the self defense force of the yishuv was an influential part of the history of Jewish settlement in Ereẓ Israel. In the last quarter of the 19th century, when the first Jewish… …
128Ganymede (moon) — Ganymede Image of Ganymede s anti Jovian hemisphere taken by the Galileo probe. Lighter surfaces, such as in recent impacts, grooved terrain and the whitish north polar cap at upper right, are enriched in water ice. Discovery …
