saltpetre bed

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• Gunpowder — For other meanings, see gunpowder (disambiguation). Black powder for muzzleloading rifles and pistols in FFFG granulation size. Coin (diameter 24 mm) for comparison. Gunpowder, also known since in the late 19th century as black powder, was the… …   Wikipedia

• India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …   Universalium

• Österlånggatan — (Swedish: Eastern Long Street) is a street in Gamla stan, the old town of Stockholm, Sweden. Stretching southward from Slottsbacken to Järntorget, it forms a parallel street to Baggensgatan …   Wikipedia

• Gorakhpur — This article is about the municipality in Uttar Pradesh, India. For its namesake district, see Gorakhpur district. ‹ The template below (Cleanup spam) is being considered for deletion. See templates for discussion to help reach a consensus.›… …   Wikipedia

• oxyacid — /ok see as id/, n. Chem. an inorganic acid containing oxygen. Also called oxygen acid. [1830 40; OXY 2 + ACID] * * * ▪ chemical compound Introduction       any oxygen containing acid. Most covalent nonmetallic oxides (oxide) react with water to… …   Universalium

• sodium — /soh dee euhm/, n. 1. Chem. a soft, silver white, metallic element that oxidizes rapidly in moist air, occurring in nature only in the combined state, and used in the synthesis of sodium peroxide, sodium cyanide, and tetraethyllead: a necessary… …   Universalium

• technology, history of — Introduction       the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …   Universalium

• Huntington, West Virginia — City of Huntington, West Virginia   City   Huntington s Central Business District as seen from the Robert C. Byrd Bridge at 6th Street …   Wikipedia

• Cuyahoga Valley National Park — IUCN Category II (National Park) Bedrock outcrops, such as this one, can be found throughout the park …   Wikipedia

• Shen Kuo — Infobox Scientist name = Shen Kuo zh. 沈括 image width = 280px caption = Shen Kuo, a Chinese scientist famous for his concepts of true north and land formation, among others. (Modern artist s impression) birth date = 1031 birth place = Qiantang… …   Wikipedia

• Malabar Farm State Park — Malabar Farm U.S. National Register of Historic Places …   Wikipedia