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Persol is an Italian luxury eyewear brand specializing in the manufacturing of sunglasses and optical frames. It is one of the oldest eyewear companies in the world and is owned by the Luxottica group. The name is derived from the Italian per il sole, meaning "for the sun". Formed in 1917 by Giuseppe Ratti, Persol originally catered to pilots ...
The Mecanum wheel is an omnidirectional wheel design for a land-based vehicle to move in any direction. It is sometimes called the Swedish wheel or Ilon wheel after its inventor, Bengt Erland Ilon (1923–2008), [ 1 ] who conceived of the concept while working as an engineer with the Swedish company Mecanum AB, and patented it in the United ...
Mecum Auctions, Inc. is an American auction company specializing in collector cars. It was founded by Dana Mecum in 1988, and was originally based in Marengo, Illinois. Since 2011, it has been headquartered in Walworth, Wisconsin. The company hosts various auction events across the United States. Television coverage began in 2008, contributing ...
Pattinson's process or pattinsonisation is a method for removing silver from lead, discovered by Hugh Lee Pattinson in 1829 [1] and patented in 1833. The process is dependent on the fact that lead which has least silver in it solidifies first on liquefaction , leaving the remaining liquid richer in silver.
Private electronic market. Software. v. t. e. A reverse auction (also known as buyer-determined auction or procurement auction) is a type of auction in which the traditional roles of buyer and seller are reversed. [ 1] Thus, there is one buyer and many potential sellers. In an ordinary auction also known as a forward auction, buyers compete to ...
Single-price auctions are a pricing method in securities auctions that give all purchasers of an issue the same purchase price. They can be perceived as modified Dutch auctions . This method has been used since 1992 when it debuted as an experiment of the U.S. Treasury for all auctions of 2-year and 5-year notes.
Star Wars Kenner Vintage 1977 to 1985 Complete Lot of 102 Figures. Price on eBay: $38,500. Though the original Star Wars movie was released in 1977, the toy line thrived throughout the 1980s ...
Barlow's wheel. Barlow's wheel was an early demonstration of a homopolar motor, designed and built by English mathematician and physicist, Peter Barlow in 1822. [ 1] It consists of a star-shaped wheel free to turn suspended over a trough of the liquid metal mercury, with the points dipping into the mercury, between the poles of a horseshoe magnet.