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The Nintendo DS product line are the best-selling handheld consoles, selling 154.02 million units worldwide. The majority of sales came from the DS Lite at 93.86 million units. [5] A handheld game console is a lightweight device with a built-in screen, controls, speakers, [6] and has greater portability than a standard video game console. [2]
This list of Internet top-level domains (TLD) contains top-level domains, which are those domains in the DNS root zone of the Domain Name System of the Internet.A list of the top-level domains by the Internet Assigned Numbers Authority (IANA) is maintained at the Root Zone Database. [1]
Quartz is a hard, crystalline mineral composed of silica ( silicon dioxide ). The atoms are linked in a continuous framework of SiO 4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO 2. Quartz is, therefore, classified structurally as a framework silicate mineral and ...
Lithium (from Ancient Greek λίθος (líthos) 'stone'; symbol Li and atomic number 3) is a soft, silvery-white alkali metal. Under standard conditions, it is the least dense metal and the least dense solid element. Like all alkali metals, lithium is highly reactive and flammable, and must be stored in vacuum, inert atmosphere, or inert ...
38,160.87 ha. Machu Picchu[ a] is a 15th-century Inca citadel located in the Eastern Cordillera of southern Peru on a mountain ridge at 2,430 meters (7,970 ft). [ 8] Often referred to as the "Lost City of the Incas", [ 9] it is the most familiar icon of the Inca Empire. It is located in the Machupicchu District within Urubamba Province [ 10 ...
Transport Layer Security ( TLS) is a cryptographic protocol designed to provide communications security over a computer network. The protocol is widely used in applications such as email, instant messaging, and voice over IP, but its use in securing HTTPS remains the most publicly visible. The TLS protocol aims primarily to provide security ...
Salt. Rock salt (halite) In common usage, salt is a mineral composed primarily of sodium chloride (NaCl). When used in food, especially in granulated form, it is more formally called table salt. In the form of a natural crystalline mineral, salt is also known as rock salt or halite. Salt is essential for life in general, and saltiness is one of ...
Rosalind Elsie Franklin (25 July 1920 – 16 April 1958) [ 1] was a British chemist and X-ray crystallographer whose work was central to the understanding of the molecular structures of DNA (deoxyribonucleic acid), RNA (ribonucleic acid), viruses, coal, and graphite. [ 2] Although her works on coal and viruses were appreciated in her lifetime ...