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Outlook.com, formerly Hotmail, is a free personal email service offered by Microsoft. This includes a webmail interface featuring mail, calendaring, contacts...

The Space Shuttle is a retired, partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the U.S. National Aeronautics and...

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 search engine is a software system that provides hyperlinks to web pages and other relevant information on the Web in response to a user's query. The...

Steel is an alloy of iron and carbon with improved strength and fracture resistance compared to other forms of iron. Because of its high tensile strength...

A solar panel is a device that converts sunlight into electricity by using photovoltaic (PV) cells. PV cells are made of materials that produce excited...

In guns, particularly firearms, but not artillery, where a different definition may apply[citation needed], caliber (or calibre; sometimes abbreviated...

The joule (pronounced /ˈdʒuːl/, JOOL or /ˈdʒaʊl/ JOWL; symbol: J) is the unit of energy in the International System of Units (SI). It is equal to the amount...

Lua (/ˈluːə/ LOO-ə; from Portuguese: lua [ˈlu(w)ɐ] meaning moon) is a lightweight, high-level, multi-paradigm programming language designed primarily for...

Atmospheric entry (sometimes listed as Vimpact or Ventry) is the movement of an object from outer space into and through the gases of an atmosphere of...

Photovoltaics (PV) is the conversion of light into electricity using semiconducting materials that exhibit the photovoltaic effect, a phenomenon studied...

In electrical engineering, a switch is an electrical component that can disconnect or connect the conducting path in an electrical circuit, interrupting...

The International Telecommunication Union (ITU) is a specialized agency of the United Nations responsible for many matters related to information and communication...

A launch vehicle is typically a rocket-powered vehicle designed to carry a payload (a crewed spacecraft or satellites) from Earth's surface or lower atmosphere...

Vulcan Centaur is a two-stage-to-orbit, expendable, heavy-lift launch vehicle created and operated by United Launch Alliance (ULA). It is principally designed...

The Handle System is the Corporation for National Research Initiatives's proprietary registry assigning persistent identifiers, or handles, to information...

AirDrop is a proprietary wireless ad hoc service in Apple Inc.'s iOS, macOS, iPadOS and visionOS operating systems, introduced in Mac OS X Lion (Mac OS...

The Japan Aerospace Exploration Agency (JAXA) (国立研究開発法人宇宙航空研究開発機構, Kokuritsu-kenkyū-kaihatsu-hōjin Uchū Kōkū Kenkyū Kaihatsu Kikō, lit. 'National Research...

The American technology company Google has added Easter eggs into many of its products and services, such as Google Search, YouTube, and Android since...

Peak oil is the theorized point in time when the maximum rate of global oil production will occur, after which oil production will begin an irreversible...