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Pershyttan Konstgång 01
Pershyttan is a small mining town approximately south-southwest of Nora, Sweden (174 km west of Stockholm). It has been restored and kept mainly as a working museum of Bergslagen's mining and iron handling which started in the early 14th century. One of Sweden's best preserved charcoal-fuelled blast furnaces from 1856 can be found in Pershyttan. In the area is also one of the biggest working water wheels. The two best known mines in the area are Lockgruvan, which dates back to the Middle Ages, and Storgruvan. Storgruvan is also called Moon Mine due to it being the site of the moonbase analogue test project, with the aim to research and explore techniques for building an underground base on the moon. 090107 moon-mine.com Some goals of the moon mine project are: * Outdoor design to provide an environment with an outdoor feeling. * Cultivation of vegetables with help of optical fibers transferred sunlight or with fluorescent light sources. * Low-volume production of me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pershyttan Iron Works
Pershyttan is a small mining town approximately south-southwest of Nora, Sweden (174 km west of Stockholm). It has been restored and kept mainly as a working museum of Bergslagen's mining and iron handling which started in the early 14th century. One of Sweden's best preserved charcoal-fuelled blast furnaces from 1856 can be found in Pershyttan. In the area is also one of the biggest working water wheels. The two best known mines in the area are Lockgruvan, which dates back to the Middle Ages, and Storgruvan. Storgruvan is also called Moon Mine due to it being the site of the moonbase analogue test project, with the aim to research and explore techniques for building an underground base on the moon. 090107 moon-mine.com Some goals of the moon mine project are: * Outdoor design to provide an environment with an outdoor feeling. * Cultivation of vegetables with help of optical fibers transferred sunlight or with fluorescent light sources. * Low-volume production of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colonization Of The Moon
Colonization of the Moon or Lunar settlement is a process, or concept employed by some proposals, for claiming robotic or human exploitation and settlement on the Moon. Laying claim to the Moon has been declared illegal through international space law and no state has made such claims, despite having a range of probes and artificial remains on the Moon. While a range of proposals for missions of lunar colonization, exploitation or permanent exploration have been raised, current projects for establishing permanent crewed presence on the Moon are not for colonizing the Moon, but rather focus on building moonbases for exploration and to a lesser extent for exploitation of lunar resources. The commercialization of the Moon is a contentious issue for national and international lunar regulation and laws (such as the Moon treaty). History Colonization of the Moon has been imagined as early as the first half of the 17th century by John Wilkins in ''A Discourse Concerning a New Pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Populated Places In Örebro County
Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world. Governments typically quantify the size of the resident population within their jurisdiction using a census, a process of collecting, analysing, compiling, and publishing data regarding a population. Perspectives of various disciplines Social sciences In sociology and population geography, population refers to a group of human beings with some predefined criterion in common, such as location, race, ethnicity, nationality, or religion. Demography is a social science which entails the statistical study of populations. Ecology In ecology, a population is a group of organisms of the same species who inhabit the same particular geographical area and are capable of interbreeding. The area of a sexual population is the area where inter-breeding is possible between any pair within the area and more probable than cross-breeding with ind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mining
Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef, or placer deposit. The exploitation of these deposits for raw material is based on the economic viability of investing in the equipment, labor, and energy required to extract, refine and transport the materials found at the mine to manufacturers who can use the material. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay. Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly created artificially in a laboratory or factory. Mining in a wider sense includes extraction of any non-renewable resource such as petroleum, natural gas, or even water. Modern mining processes involve prospecting for ore bodies, analysis of the profit potential of a proposed mine, extraction of the desired materials, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cave
A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called ''exogene'' caves. Caves which extend further underground than the opening is wide are called ''endogene'' caves. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called ''caving'', ''potholing'', or ''spelunking''. Formation types The formation and development of caves is known as ''speleogenesis''; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorgani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluorescent Lamp
A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow. A fluorescent lamp converts electrical energy into useful light much more efficiently than an incandescent lamp. The typical luminous efficacy of fluorescent lighting systems is 50–100 lumens per watt, several times the efficacy of incandescent bulbs with comparable light output. For comparison, the luminous efficacy of an incandescent bulb may only be 16 lumens per watt. Fluorescent lamp fixtures are more costly than incandescent lamps because, among other things, they require a ballast to regulate current through the lamp, but the initial cost is offset by a much lower running cost. Compact fluorescent lamps are now available in the same popular sizes as incand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
