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  2. Pi network Project - Wikipedia

    en.wikipedia.org/wiki/Pi_network_Project

    Pi Network is a digital currency and decentralized finance project that aims to make cryptocurrency mining accessible via mobile devices. Developed by a group of Stanford graduates, Pi Network allows users to "mine" or validate transactions on their smartphones through a mobile application.

  3. Mechanically powered flashlight - Wikipedia

    en.wikipedia.org/.../Mechanically_powered_flashlight

    A dyno torch, dynamo torch, or squeeze flashlight is a flashlight or pocket torch which generates energy via a flywheel. The user repeatedly squeezes a handle to spin a flywheel inside the flashlight, attached to a small generator/dynamo, supplying electric current to an incandescent bulb or light-emitting diode. The flashlight must be pumped ...

  4. Flashlight - Wikipedia

    en.wikipedia.org/wiki/Flashlight

    A flashlight or electric torch (Commonwealth English), usually shortened to torch, is a portable hand-held electric lamp. Formerly, the light source typically was a miniature incandescent light bulb , but these have been displaced by light-emitting diodes (LEDs) since the early 2000s.

  5. List of bitcoin companies - Wikipedia

    en.wikipedia.org/wiki/List_of_Bitcoin_companies

    cryptocurrency exchange Incorporated in Antigua and Barbuda. Declared bankruptcy in 2022. Ghash.io (CEX.IO) 2013 United Kingdom: London: mining pool (CEX.IO was an exchange) Closed in October 2016 [citation needed] HTX (formerly Huobi) 2013 Seychelles: bitcoin exchange [7] Kraken: 2011 United States: San Francisco: bitcoin exchange [citation ...

  6. List of cryptocurrencies - Wikipedia

    en.wikipedia.org/wiki/List_of_cryptocurrencies

    China based cryptocurrency, formerly ANT Shares and ANT Coins. The names were changed in 2017 to NEO and GAS. 2014 MazaCoin: MZC BTC Oyate Initiative SHA-256d: C++ [39] PoW: The underlying software is derived from that of another cryptocurrency, ZetaCoin. 2014 Monero: XMR Monero Core Team RandomX C++ [40] PoW

  7. Carbide lamp - Wikipedia

    en.wikipedia.org/wiki/Carbide_lamp

    A mining or caving lamp has calcium carbide placed in a lower chamber, the generator. The upper reservoir is then filled with water. A threaded valve or other mechanism is used to control the rate at which the water is allowed to drip into the chamber containing the calcium carbide.

  8. Olight - Wikipedia

    en.wikipedia.org/wiki/Olight

    Olight is a flashlight brand [4] that was founded in 2007 by Fox Fan. [5] The brand is headquartered in Taiwan, [6] and has operations in Georgia, United States. [7] Olight specializes in the production of flashlights, [8] including LED flashlights, [9] survival lights, [10] and tactical flashlights. [11] In addition, it also produces headlamps ...

  9. Bitcoin protocol - Wikipedia

    en.wikipedia.org/wiki/Bitcoin_protocol

    A diagram of a bitcoin transfer. The bitcoin protocol is the set of rules that govern the functioning of bitcoin.Its key components and principles are: a peer-to-peer decentralized network with no central oversight; the blockchain technology, a public ledger that records all bitcoin transactions; mining and proof of work, the process to create new bitcoins and verify transactions; and ...