A solar still distills water with substances dissolved in it by using the heat of the Sun to evaporate water so that it may be cooled and collected, thereby purifying it. They are used in areas where drinking water is unavailable, so that clean water is obtained from dirty water or from plants by exposing them to sunlight. Still types include large scale concentrated solar stills and condensation traps. HistoryCondensation traps have been in use since the pre- peoples inhabited the. In 1952, the United States military developed a portable solar still for pilots stranded in the ocean. It featured an inflatable 6.
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Lithium was discovered by Johan August Arfvedson in 1817 during an analysis of petalite ore, an ore now recognised to be LiAl (Si 2 O 5) 2, taken from the Swedish island of Utö. Arfvedson subsequently discovered lithium in the minerals spodumene and lepidolite.
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Atlas Copco Group (Copco from Compagnie Pneumatique Commerciale) is a Swedish multinational industrial company. It manufactures compressors, vacuum equipment, pumps, generators, assembly tools, quality assurance equipment and other products and systems for industrial applications and mobile power generation. The products are sold in around 180 countries. The company was f. HistoryThe company AB Atlas, as it was first named, was founded in 1873 by Edvard Fränckel, who was a Swedish industrialist, politician and senior official at the. Early investors were.
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