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The fireplace mantel or mantelpiece, also known as a chimneypiece, originated in medieval times as a hood that projected over a fire grate to catch the smoke. The term has evolved to include the decorative framework around the fireplace , and can include elaborate designs extending to the ceiling.
The internal structure of Earth. Earth's mantle is a layer of silicate rock between the crust and the outer core.It has a mass of 4.01 × 10 24 kg (8.84 × 10 24 lb) and makes up 67% of the mass of Earth. [1]
The silicate mantle of the Earth's moon is approximately 1300–1400 km thick, and is the source of mare basalts. [4] The lunar mantle might be exposed in the South Pole-Aitken basin or the Crisium basin. [4] The lunar mantle contains a seismic discontinuity at ~500 kilometers (310 miles) depth, most likely related to a change in composition. [4]
Mantel—Either the shelf above a fireplace or the structure to support masonry above a fireplace [23] Smoke shelf—A shelf below the smoke chamber and behind the damper. It collects debris and water falling down the flue. [24] Throat (waist)—The narrow area above a fireplace usually where the damper is located. [21]
On Earth, the Rayleigh number for convection within Earth's mantle is estimated to be of order 10 7, which indicates vigorous convection. This value corresponds to whole mantle convection (i.e. convection extending from the Earth's surface to the border with the core). On a global scale, surface expression of this convection is the tectonic ...
Structure of Earth. The mesosphere is labeled as Stiffer mantle in this diagram.. The lower mantle, historically also known as the mesosphere, represents approximately 56% of Earth's total volume, and is the region from 660 to 2900 km below Earth's surface; between the transition zone and the outer core. [1]
A mantle (from old French mantel, from mantellum, the Latin term for a cloak) is a type of loose garment usually worn over indoor clothing to serve the same purpose as an overcoat. Technically, the term describes a long, loose cape -like cloak worn from the 12th to the 16th century by both sexes, although by the 19th century, it was used to ...
The mantle worn by a simple monk or nun is black (black being the traditional monastic color, symbolizing mourning over one's sins and a reminder of the vow of poverty), joined at the neck and hanging down to the feet. In the Russian tradition, the mantle is usually pleated (33 pleats for the number of years in the earthly life of Jesus). It ...