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Atmospheric convection is the vertical transport of heat and moisture in the atmosphere.It occurs when warmer, less dense air rises, while cooler, denser air sinks. This process is driven by parcel-environment instability, meaning that a "parcel" of air is warmer and less dense than the surrounding environment at the same altitude.
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 time (mixed convection). [4] Internal and external flow can also classify convection. Internal flow occurs when a fluid is enclosed by a solid boundary such as when flowing through a pipe.
Download QR code; Print/export ... ‡NRHP Historic District (HD) ⁂NRHP HD contributing property ... More images: 1649 W. SH 21: Alto:
Gravity drives natural convection. Without gravity, convection does not occur, so there is no convection in free-fall environments, such as that of the orbiting International Space Station. Natural convection can occur when there are hot and cold regions of either air or water, because both water and air become less dense as they are heated.
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The museum had exhibits on Texas history, anthropology, geography, and ethnography, but these were relocated to other museums (including the Bullock Texas State History Museum) in 2001. In October 2013, Linda Hicke, the dean of Austin's College of Natural Sciences , cut the museum's funding by $400,000.
Oct. 2, 2007: The implosion of the Wildcatter ride at Six Flags Over Texas as viewed from the oil derrick tower. The park imploded the ride to make room for its new ride for the 2008 season, the ...
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