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  2. Methane clathrate - Wikipedia

    en.wikipedia.org/wiki/Methane_clathrate

    Methane clathrate (CH 4 ·5.75H 2 O) or (4CH 4 ·23H 2 O), also called methane hydrate, hydromethane, methane ice, fire ice, natural gas hydrate, or gas hydrate, is a solid clathrate compound (more specifically, a clathrate hydrate) in which a large amount of methane is trapped within a crystal structure of water, forming a solid similar to ice.

  3. World of Warcraft: Wrath of the Lich King - Wikipedia

    en.wikipedia.org/wiki/World_of_Warcraft:_Wrath...

    World of Warcraft: Wrath of the Lich King is the second expansion set for the massively multiplayer online role-playing game (MMORPG) World of Warcraft, following The Burning Crusade. It launched on November 13, 2008 and sold 2.8 million copies within the first day, making it the fastest selling computer game of all time released at that point.

  4. World of Warcraft: Arthas: Rise of the Lich King - Wikipedia

    en.wikipedia.org/wiki/World_of_Warcraft:_Arthas:...

    The love triangle between Arthas, Jaina Proudmoore and Kael'thas Sunstrider is developed through the plot, Arthas and Jaina partaking in the festivities of Noblegarden, the Midsummer Fire Festival, Hallow's End and the Feast of Winter Veil together. Later, as Arthas starts taking on the responsibilities of a prince, he visits Durnholde Keep ...

  5. 2008 in video games - Wikipedia

    en.wikipedia.org/wiki/2008_in_video_games

    World of Warcraft: Wrath of the Lich King: Blizzard Entertainment: November 13, 2008 Microsoft Windows: 91/100 92.68% Galactic Civilizations II: Twilight of the Arnor: Stardock: April 30, 2008 Microsoft Windows: 92/100 92.33% Persona 4: Atlus: July 10, 2008 PlayStation 2: 90/100 92.28% World of Goo: 2D Boy October 13, 2008 Microsoft Windows: 90 ...

  6. Fire brick - Wikipedia

    en.wikipedia.org/wiki/Fire_brick

    A fire brick, firebrick, fireclay brick, or refractory brick is a block of ceramic material used in lining furnaces, kilns, fireboxes, and fireplaces. A refractory brick is built primarily to withstand high temperature, but will also usually have a low thermal conductivity for greater energy efficiency .

  7. Eternal flame - Wikipedia

    en.wikipedia.org/wiki/Eternal_flame

    Nizhny Novgorod Kremlin eternal flame memorializing losses during World War II .. An eternal flame is a flame, lamp or torch that burns for an indefinite time. Most eternal flames are ignited and tended intentionally, but some are natural phenomena caused by natural gas leaks, peat fires and coal seam fires, all of which can be initially ignited by lightning, piezoelectricity or human activity ...

  8. Hexamethylenetetramine - Wikipedia

    en.wikipedia.org/wiki/Hexamethylenetetramine

    Hexamethylenetetramine (HMTA), also known as 1,3,5,7-tetraazaadamantane, is a heterocyclic organic compound with diverse applications. [2] [3] It has the chemical formula (CH 2) 6 N 4 and is a white crystalline compound that is highly soluble in water and polar organic solvents.

  9. Firescale - Wikipedia

    en.wikipedia.org/wiki/Firescale

    Example of firestain on silver jewellery. Firestain is a layer of oxides that is visible on the surface of objects made of metal alloys containing copper when the object is heated, as by a jeweler heating a ring to apply solder during a repair.