Mortar Intumescent
Mortar may refer to: * Mortar (weapon), an indirect-fire infantry weapon * Mortar (masonry), a material used to fill the gaps between blocks and bind them together * Mortar and pestle, a tool pair used to crush or grind * Mortar, Bihar, a village in India * The Manby mortar, an invention for rescuing shipwreck survivors See also * Mortar methods, discretization methods for partial differential equations * Mortarboard, a type of headwear worn as part of academic dress * Mortar Board Mortar Board is an American national honor society for college juniors and seniors. It was established in 1918 in Syracuse, New York through the merger of four local women's organizations from four institutions. It started admitting men in 1975 ...

Mortar (weapon)
A mortar today is usually a simple, lightweight, man-portable, Muzzleloader, muzzle-loaded cannon, consisting of a Smoothbore, smooth-bore (although some models use a Rifling, rifled barrel) metal tube fixed to a base plate (to spread out the recoil) with a lightweight bipod mount and a Sight (device), sight. Mortars are typically used as indirect fire weapons for close fire support with a variety of ammunition. Historically mortars were heavy Siege, siege artillery. Mortars launch explosive shell (projectile), shells (technically called Bomb, bombs) in high arching Projectile motion, ballistic trajectories. History Mortars have been used for hundreds of years. The earliest reported use of mortars was in Korea in a 1413 naval battle when Korean gunsmiths developed the ''wan'gu'' (gourd-shaped mortar) (완구, 碗口). The earliest version of the ''wan'gu'' dates back to 1407. Ch'oe Hae-san (1380–1443), the son of Ch'oe Mu-sŏn (1325–1395), is generally credited with inventi ...
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Mortar (masonry)
Mortar is a workable paste which hardens to bind building blocks such as stones, bricks, and concrete masonry units, to fill and seal the irregular gaps between them, spread the weight of them evenly, and sometimes to add decorative colours or patterns to masonry walls. In its broadest sense, mortar includes pitch, asphalt, and soft clay, as those used between bricks, as well as cement mortar. The word "mortar" comes from the Old French word ''mortier'', "builder's mortar, plaster; bowl for mixing." (13c.). Cement mortar becomes hard when it cures, resulting in a rigid aggregate (composite) , aggregate structure; however, the mortar functions as a weaker component than the building blocks and serves as the sacrificial element in the masonry, because mortar is easier and less expensive to repair than the building blocks. Bricklayers typically make mortars using a mixture of sand, a binder, and water. The most common binder since the early 20th century is Portland cement, but ...
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Mortar And Pestle
A mortar and pestle is a set of two simple tools used to prepare ingredients or substances by compression (physics), crushing and shear force, grinding them into a fine Paste (rheology), paste or powder in the kitchen, laboratory, and pharmacy. The ''mortar'' () is characteristically a bowl, typically made of hardwood, metal, ceramic, or hard stone such as granite. The ''pestle'' (, also ) is a blunt, club-shaped object. The substance to be ground, which may be wet or dry, is placed in the mortar where the pestle is pounded, pressed, or rotated into the substance until the desired texture is achieved. Mortars and pestles have been used in cooking since the Stone Age; today they are typically associated with the pharmacy profession due to their historical use in preparing medicines. They are used in chemistry settings for pulverizing small amounts of chemicals; in arts and cosmetics for pulverizing pigments, binders, and other substances; in ceramics for making Grog (clay), grog; ...
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Mortar, Bihar
Mortar is a village in the Garhpura block of Begusarai district in the Indian state of Bihar about north of district capital, Begusarai. The 2011 census gives its population as 1,817. It comes under Malipur Panchayat and under post office Malipur. Facilities As of 2009, the water supply is from wells and hand pumps; there is no tap water. Domestic electricity is available. Primary, middle and secondary schooling is provided within the village. The nearest police station is at Garhpura. Mortar Durga Puja Samiti The annual Durga Puja festival is organised by the Mortar Durga Puja Samiti. A mela takes place in the school ground, when an idol of the goddess Durga Durga (, ) is a major Hindu goddess, worshipped as a principal aspect of the mother goddess Mahadevi. She is associated with protection, strength, motherhood, destruction, and wars. Durga's legend centres around combating evils and demonic ... is made and people gather together to celebrate. Sweets are boug ...
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Manby Mortar
The Manby mortar or Manby apparatus was a maritime lifesaving device originated at the start of the 19th century, comprising a mortar capable of throwing a line to a foundering ship within reach of shore, such that heavier hawsers could then be pulled into place and used either to direct a rescue-boat to the ship, or, later, to mount a Breeches buoy. The apparatus was invented by Captain George William Manby, inspired by his witnessing a ship HMS ''Snipe'' run aground off Great Yarmouth in 1807. The first recorded rescue using the Manby apparatus was on 18 February 1808, with Manby himself in charge. The crew of seven were brought to safety from the Plymouth Brig ''Elizabeth'', stranded off the shore at Great Yarmouth. It was estimated that by the time of Manby's death nearly 1000 persons had been rescued from stranded ships by means of his apparatus. It was used by the Sea Fencibles by 1809, Waterguard, and later by H M Coastguard for many years. The Hilgay village si ...
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Mortar Methods
In numerical analysis, mortar methods are discretization methods for partial differential equations, which use separate finite element discretization on nonoverlapping subdomains. The meshes on the subdomains do not match on the interface, and the equality of the solution is enforced by Lagrange multipliers, judiciously chosen to preserve the accuracy of the solution.Y. Maday, C. Mavriplis, and A. T. Patera, ''Nonconforming mortar element methods: application to spectral discretizations'', in Domain decomposition methods (Los Angeles, CA, 1988), SIAM, Philadelphia, PA, 1989, pp. 392--418. B. I. Wohlmuth, ''A mortar finite element method using dual spaces for the Lagrange multiplier'', SIAM J. Numer. Anal., 38 (2000), pp. 989--1012. Mortar discretizations lend themselves naturally to the solution by iterative domain decomposition methods such as FETI and balancing domain decomposition In numerical analysis, the balancing domain decomposition method (BDD) is an iterative method to ...
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Mortarboard
The square academic cap, graduate cap, cap, mortarboard (because of its similarity in appearance to the mortarboard used by brickmasons to hold mortar) or Oxford cap is an item of academic dress consisting of a horizontal square board fixed upon a skull-cap, with a tassel attached to the centre. In the UK and the US, it is commonly referred to informally in conjunction with an academic gown as a "cap and gown". It is also sometimes termed a square, trencher, or corner-cap. The adjective academical is also used. The cap, together with the gown and sometimes a hood, now form the customary uniform of a university graduate in many parts of the world, following a British model. Origins The mortarboard may have developed from the biretta, a similar-looking hat worn by Roman Catholic clergy. The biretta itself may have been a development of the Roman ''pileus quadratus'', a type of skullcap with superposed square and tump (meaning small mound). A reinvention of this type of ...
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