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  2. Mechanically powered flashlight - Wikipedia

    en.wikipedia.org/.../Mechanically_powered_flashlight

    The linear induction, Faraday flashlight, or "shake flashlight" is another type of mechanically powered flashlight. It has been sold in the US beginning with direct marketing campaigns in 2002. This design contains a linear electrical generator which charges a supercapacitor which functions similarly to a rechargeable battery when the ...

  3. Crypto Mining as Passive Income: Is It Worth It? - AOL

    www.aol.com/crypto-mining-passive-income-worth...

    When cryptocurrencies first launched, it was relatively easy -- albeit expensive -- to set up a mining operation in your home and earn as much as 50 bitcoin every 10 minutes. Today's miners earn ...

  4. List of cryptocurrencies - Wikipedia

    en.wikipedia.org/wiki/List_of_cryptocurrencies

    A bitcoin-based currency featuring instant transactions, decentralized governance and budgeting, and private transactions. 2014 NEO: NEO Da Hongfei & Erik Zhang SHA-256 & RIPEMD160: C# [38] dBFT: 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 ...

  5. List of bitcoin companies - Wikipedia

    en.wikipedia.org/wiki/List_of_Bitcoin_companies

    CoinDesk (part of Digital Currency Group) 2013 United States: New York City: news [citation needed] Crypto.com: 2013 Singapore Singapore: cryptocurrency exchange [citation needed] Cryptopia: 2014 New Zealand: Christchurch: cryptocurrency exchange Liquidated in 2019, ongoing investigation [5] Digital Asset Holdings: 2014 United States: New York City

  6. Cryptocurrency - Wikipedia

    en.wikipedia.org/wiki/Cryptocurrency

    In March 2018, the city of Plattsburgh, New York put an 18-month moratorium on all cryptocurrency mining in an effort to preserve natural resources and the "character and direction" of the city. [76] In 2021, Kazakhstan became the second-biggest crypto-currency mining country, producing 18.1% of the global exahash rate.

  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. GPU mining - Wikipedia

    en.wikipedia.org/wiki/GPU_mining

    GPU mining is the use of Graphics Processing Units (GPUs) to "mine" proof-of-work cryptocurrencies, such as Bitcoin. [1] Miners receive rewards for performing computationally intensive work, such as calculating hashes, that amend and verify transactions on an open and decentralized ledger.

  9. Digital currency - Wikipedia

    en.wikipedia.org/wiki/Digital_currency

    Digital currency (digital money, electronic money or electronic currency) is any currency, money, or money-like asset that is primarily managed, stored or exchanged on digital computer systems, especially over the internet. Types of digital currencies include cryptocurrency, virtual currency and central bank digital currency.