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Convection is also seen in the rising plume of hot air from fire, plate tectonics, oceanic currents (thermohaline circulation) and sea-wind formation (where upward convection is also modified by Coriolis forces). In engineering applications, convection is commonly visualized in the formation of microstructures during the cooling of molten ...
Forced convection: when a fluid is forced to flow over the surface by an internal source such as fans, by stirring, and pumps, creating an artificially induced convection current. [ 3 ] In many real-life applications (e.g. heat losses at solar central receivers or cooling of photovoltaic panels), natural and forced convection occur at the same ...
The electrostatic repulsion of ions, ionic recombination, and air convection currents due to heating tend to break up ionized regions, so streamers have a short lifetime. In electromagnetism , a streamer discharge , also known as filamentary discharge , is a type of transient electric discharge which forms at the surface of a conductive ...
Betsy's Kindergarten Adventures: January 13, 2008 May 31, 2009 [note 44] [60] Sid the Science Kid 1: September 1, 2008 June 25, 2023 [note 45] Lomax, the Hound of Music: October 11, 2008 December 29, 2008 [61] The Electric Company (2009) January 19, 2009 August 31, 2014 [62] Angelina Ballerina: The Next Steps 1: September 5, 2009 November 14 ...
Convection is caused by yeast releasing CO2. In fluid dynamics, a convection cell is the phenomenon that occurs when density differences exist within a body of liquid or gas. These density differences result in rising and/or falling convection currents, which are the key characteristics of a convection cell. When a volume of fluid is heated, it ...
Free, or natural, convection occurs when bulk fluid motions (streams and currents) are caused by buoyancy forces that result from density variations due to variations of temperature in the fluid. Forced convection is a term used when the streams and currents in the fluid are induced by external means—such as fans, stirrers, and pumps ...
Jenn Wilson, a communications coordinator at Louisville High School in Ohio, came up with the idea. The video enlisted current kindergarteners (the class of 2036) as well as the class of 2024.
The polar cell is a simple system with strong convection drivers. Though cool and dry relative to equatorial air, the air masses at the 60th parallel are still sufficiently warm and moist to undergo convection and drive a thermal loop. At the 60th parallel, the air rises to the tropopause (about 8 km at this latitude) and moves poleward.