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Paper shredder. A paper shredder is a mechanical device used to cut sheets of paper into either strips or fine particles. Government organizations, businesses, and private individuals use shredders to destroy private, confidential, or otherwise sensitive documents.
Gabi Tolkowsky. Gabriel S. Tolkowsky (15 September 1939 – 28 May 2023) was a Belgian diamond cutter. He was known for cutting the famous Centenary Diamond, [1] and was one of the world's most renowned diamond cutters. The great nephew of Marcel Tolkowsky, father of the modern round brilliant diamond cut, [2] he is the sixth generation in his ...
Diamond cutting is the practice of shaping a diamond from a rough stone into a faceted gem. Cutting diamonds requires specialized knowledge, tools, equipment, and techniques because of its extreme difficulty. The first guild of diamond cutters and polishers (Diamantaire) was formed in 1375 in Nuremberg, Germany, [1] and led to the development ...
A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut. Cut refers to shape (pear, oval), and also the symmetry, proportioning and polish of a diamond. The cut of a diamond greatly affects a diamond's brilliance—a poorly-cut diamond is less luminous. In order to best use a diamond gemstone ...
DARPA Shredder Challenge 2011 was a prize competition for exploring methods to reconstruct documents shredded by a variety of paper shredding techniques. The aim of the challenge was to "assess potential capabilities that could be used by the U.S. warfighters operating in war zones, but might also identify vulnerabilities to sensitive information that is protected by shredding practices ...
Marcel Tolkowsky (25 December 1899 – 10 February 1991), [ 1] an engineer by education, was a Belgian member of a Jewish family of diamond cutters from Poland. He is generally acknowledged as the father of the modern round brilliant diamond cut. [ 2] Many of his family have gone on to become noted diamond cutters, including his cousin Lazare ...
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