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Original file (5,097 × 3,300 pixels, file size: 10.51 MB, MIME type: application/pdf) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Quercus gambelii trees differ in size from one location to another. The average mature height is from 3–9 metres (10–30 feet), but occasionally reaches heights of 18 m (59 ft) in some locations. The average mature height is from 3–9 metres (10–30 feet), but occasionally reaches heights of 18 m (59 ft) in some locations.
The stack effect or chimney effect is the movement of air into and out of buildings through unsealed openings, chimneys, flue-gas stacks, or other purposefully designed openings or containers, resulting from air buoyancy. Buoyancy occurs due to a difference in indoor-to-outdoor air density resulting from temperature and moisture differences ...
The Btu should not be confused with the Board of Trade Unit (BTU), an obsolete UK synonym for kilowatt hour (1 kW⋅h or 3,412 Btu). The Btu is often used to express the conversion-efficiency of heat into electrical energy in power plants. Figures are quoted in terms of the quantity of heat in Btu required to generate 1 kW⋅h of electrical energy.
A chimney sweep in Wexford, Ireland in 1850. A chimney sweep is a person who inspects then clears soot and creosote from chimneys. The chimney uses the pressure difference caused by a hot column of gas to create a draught and draw air over the hot coals or wood enabling continued combustion. Chimneys may be straight or contain many changes of ...
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Several of these terms may be compounded with chimney or fireplace such as chimney-back. Andiron—Either one of two horizontal metal bars resting on short legs intended to support firewood in a hearth. [20] Arch—An arched top of the fireplace opening. [21] Ash dump—An opening in a hearth to sweep ashes for later removal from the ash pit. [21]
English: Wentworth grain size chart from United States Geological Survey Open-File Report 2006-1195, “Surficial sediment character of the Louisiana offshore continental shelf region: A GIS Compilation” by Jeffress Williams, Matthew A. Arsenault, Brian J. Buczkowski, Jane A. Reid, James G. Flocks, Mark A. Kulp, Shea Penland, and Chris J. Jenkins