Encyclopedia > Mantle

  Article Content

Mantle

The mantle is the region of Earth that lies between 30/35-2,900km below the surface. Found here are: olivines, pyroxenes, and the silicate perovskite, a dense form of enstatite[?].

The upper mantle is known as the asthenosphere.

Refer to Earth for detailed information on the interior of the planet.


A mantle is an organ possessed by molluscs used to secrete their shells.


A mantle is also a device used in Gas lamps[?] and Kerosene lamps to produce a bright light.

A mantle is basically a small sock made of silk or asbestos. asbestos can stand high temperatures. Silk-based mantles are extremely brittle once first burned.

The traditional mantle is coated in thorium, which when heated enough (with burning gas or kerosene vapour) glows brightly. Owing to concerns about the radioactivity of thorium, alternatives are now used in some countries, but these are more expensive and less efficient.

A mantle is an essential part of gas and kerosene lamps, and allows them to give out brilliant white light.

Thorium is radioactive, and pure thorium becomes more radioactive as it ages owing to its decay products. It should be handled with care.


A mantle (also mantel) is the stone or wood beam which serves as a support for the structure above a Fireplace[?], together with the whole framework, whether of wood, stone, etc., that acts as an ornament of the same.



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Artery

... This phenomenon is possible due to the oxyhemoglobin dissociation curve (a sigmoid curve illustrating hemoglobin's affinity for oxygen). The aorta is the root ...