Counter-current
81Residual-current device — A two pole residual current device A Residual Current Device is a generic term covering both RCCBs and RCBOs. A Residual Current Circuit Breaker (RCCB) is an electrical wiring device that disconnects a circuit whenever it detects that the… …
82Gravity current — In fluid dynamics, a gravity current is a primarily horizontal flow in a gravitational field that is driven by a density difference, hence gravity currents also sometimes being referred to as density currents . Typically, the density difference… …
83Over-the-counter (finance) — Within the derivatives markets, many products are traded through exchanges. An exchange has the benefit of facilitating liquidity and also mitigates all credit risk concerning the default of a member of the exchange. Products traded on the… …
84Office for Security and Counter-Terrorism — The Office for Security and Counter Terrorism (OSCT) is an executive directorate of the Home Office responsible for leading the work on counter terrorism in the UK, working closely with the police and security services. The office reports to the… …
85Aromatic ring current — This article is about aromatic chemistry. For the meteorological effect, see Ring current. A diagram of an aromatic ring current. B0 is the applied magnetic field, the red arrow indicating its direction. The orange ring shows the direction of the …
86East Australian Current — The East Australian Current is an ocean current that moves warm water in a counter clock wise fashion down the east coast of Australia. [http://earthobservatory.nasa.gov/NaturalHazards/shownh.php3?img id=13055 East Australian Current,] NASA Earth …
87Geiger counter — an instrument for detecting ionizing radiations, consisting of a gas filled tube in which electric current pulses are produced when the gas is ionized by radiation, and of a device to register these pulses: used chiefly to measure radioactivity.… …
88Geiger counter — [gī′gər] n. [after H. Geiger (1882 1945), Ger physicist] an instrument for detecting and counting ionizing particles that pass through it: it consists of a needlelike electrode inside a hollow metallic cylinder filled with gas which, when ionized …
89Gei|ger-Mül|ler counter — Gei|ger counter «GY guhr»or Gei|ger Mül|ler counter«GY guhr mooL uhr», Physics. a device which detects and counts ionizing particles. It consists essentially of a tube with two electrodes between which a high potential difference is maintained.… …
90Gei|ger counter — «GY guhr»or Gei|ger Mül|ler counter«GY guhr mooL uhr», Physics. a device which detects and counts ionizing particles. It consists essentially of a tube with two electrodes between which a high potential difference is maintained. When a charged… …
