Portal:Technology

From Wikipedia, the free encyclopedia

(Redirected from Portal:Technology and applied sciences)

Culture · Geography · Health · History · Mathematics · Natural sciences · Philosophy · Religion · Society · Technology

edit

The Technology and applied sciences Portal

Technology (Greek technologia (τεχνολογία) < techne (τέχνη) "craft" + logia (λόγος); "saying") is the application of developments in science and engineering to benefit humanity. It may be defined as: "Solutions for real human problems by the development and application of tools, machines, materials, goods, or information in the form of skills, knowledge, processes, blueprints, plans, diagrams, models, formulae, tables, engineering designs, specifications, manuals, or instructions."

More about technology...

Show new selections

edit

Selected article

The Global Positioning System (GPS) is the only fully functional Global Navigation Satellite System (GNSS). The GPS uses a constellation of between 24 and 32 Medium Earth Orbit satellites that transmit precise microwave signals, that enable GPS receivers to determine their location, speed, direction, and time. GPS was developed by the United States Department of Defense. Its official name is NAVSTAR-GPS. Although NAVSTAR-GPS is not an acronym^[1], a few backronyms have been created for it^[2]. The GPS satellite constellation is managed by the United States Air Force 50th Space Wing.

Similar satellite navigation systems include the Russian GLONASS (incomplete as of 2008), the upcoming European Galileo positioning system, the proposed COMPASS navigation system of China, and IRNSS of India.

Following the shooting down of Korean Air Lines Flight 007 in 1983, President Ronald Reagan issued a directive making the system available free for civilian use as a common good.^[3] Since then, GPS has become a widely used aid to navigation worldwide, and a useful tool for map-making, land surveying, commerce, scientific uses, and hobbies such as geocaching. GPS also provides a precise time reference used in many applications including scientific study of earthquakes, and synchronization of telecommunications networks.

...Archive/Nominations

Read more...

edit

Selected picture

Credit: Screenshot from Tom Clancy's Ghost Recon Advanced Warfighter 2.

A video game is a game that involves interaction with a user interface to generate visual feedback on a video device. The word video in video game traditionally referred to a raster display device.^[4] However, with the popular use of the term "video game", it now implies any type of display device. The electronic systems used to play video games are known as platforms; examples of these are personal computers and video game consoles. These platforms are broad in range, from large computers to small handheld devices. Specialized video games such as arcade games, while previously common, have gradually declined in use.

...Archive/Nominations

Read more...

edit

Selected biography

Christopher Columbus Kraft, Jr. (born February 28, 1924) is a retired NASA engineer and manager. After graduating from Virginia Tech in 1944, Kraft was hired by the National Advisory Committee for Aeronautics (NACA), the predecessor organization to the National Aeronautics and Space Administration (NASA). He worked for over a decade in aeronautical research before being asked in 1958 to join the Space Task Group, a small team entrusted with the responsibility of putting America's first man in space. Assigned to the flight operations division, Kraft became NASA's first flight director. He was on duty during such historic missions as America's first spaceflight, first orbital flight, and first spacewalk.

At the beginning of the Apollo program, Kraft retired as a flight director in order to concentrate on management and mission planning. In 1972, he became director of the Manned Spacecraft Center (later Johnson Space Center), following in the footsteps of his mentor Robert Gilruth. He held the position until his retirement from NASA in 1982. During his retirement, Kraft has consulted for numerous companies including IBM and Rockwell International, and he published an autobiography entitled Flight: My Life in Mission Control.

...Archive/Nominations

Read more...

edit

News

Wikinews Science and technology portal

edit

Did you know...

... that a mercury arc rectifier converts alternating current to direct current by means of an electric arc through mercury vapor?
... that only one of the 266 1076 Class steam locomotives built for the Great Western Railway was named, and the rest had only numbers?
... that the six Charles Tayleur locomotives ordered by Isambard Kingdom Brunel for the Great Western Railway were unsuccessful?

Tropical Storm Wilma regional imagery, 2005

... that the intensity of a tropical cyclone (pictured) is usually determined by the Dvorak technique using only visible and infrared satellite images?

... that the technique of double-balloon enteroscopy allows any position along the gastrointestinal tract to be visualized in real-time?

... that ANTARES, a neutrino telescope under construction in the Mediterranean Sea, will find neutrinos from outer space by looking downward, into the Earth?

... that KATRIN is an experiment to determine the mass of the neutrino by measuring the energies of electrons given off from the beta decay of tritium?