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A firearm is any type of gun that uses an explosive charge and is designed to be readily carried and used by an individual. The term is legally defined...

Steven Anthony Ballmer (/ˈbɔːlmər/; March 24, 1956) is an American businessman and investor who was the chief executive officer of Microsoft from 2000...

A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible intercalation of Li+ ions into electronically conducting solids...

A steam engine is a heat engine that performs mechanical work using steam as its working fluid. The steam engine uses the force produced by steam pressure...

A solar cell or photovoltaic cell (PV cell) is an electronic device that converts the energy of light directly into electricity by means of the photovoltaic...

In telecommunications, long-term evolution (LTE) is a standard for wireless broadband communication for mobile devices and data terminals, based on the...

A modulator-demodulator or modem is a computer hardware device that converts data from a digital format into a format suitable for an analog transmission...

A continuously variable transmission (CVT) is an automated transmission that can change through a continuous range of gear ratios. This contrasts with...

The Steyr AUG (German: Armee-Universal-Gewehr, lit. 'army universal rifle') is an Austrian bullpup assault rifle chambered for the 5.56×45mm NATO intermediate...

The free online encyclopedia Wikipedia has been criticized since its creation in 2001. Most of the criticism has been directed toward its content, community...

Synthetic fibers or synthetic fibres (in British English; see spelling differences) are fibers made by humans through chemical synthesis, as opposed to...

A rubber band (also known as an elastic band, gum band or lacky band) is a loop of rubber, usually ring or oval shaped, and commonly used to hold multiple...

In computing, tar is a computer software utility for collecting many files into one archive file, often referred to as a tarball, for distribution or backup...

A camshaft is a shaft that contains a row of pointed cams in order to convert rotational motion to reciprocating motion. Camshafts are used in piston engines...

A super heavy-lift launch vehicle is a rocket that can lift to low Earth orbit a "super heavy payload", which is defined as more than 50 metric tons (110...

A reusable launch vehicle has parts that can be recovered and reflown, while carrying payloads from the surface to outer space. Rocket stages are the most...

A Stirling engine is a heat engine that is operated by the cyclic expansion and contraction of air or other gas (the working fluid) by exposing it to different...

The Samsung Galaxy S4 is an Android smartphone produced by Samsung Electronics as the fourth smartphone of the Samsung Galaxy S series and was first shown...

Phoenix was an uncrewed space probe that landed on the surface of Mars on May 25, 2008, and operated until November 2, 2008. Phoenix was operational on...

The lithium iron phosphate battery (LiFePO 4 battery) or LFP battery (lithium ferrophosphate) is a type of lithium-ion battery using lithium iron phosphate...