Portal:Technology

Selected article

Fusion power refers to power generated by nuclear fusion reactions. In this kind of reaction, two light atomic nuclei fuse together to form a heavier nucleus and in doing so, release energy. In a more general sense, the term can also refer to the production of net usable power from a fusion source, similar to the usage of the term "steam power." Most design studies for fusion power plants involve using the fusion reactions to create heat, which is then used to operate a steam turbine, similar to most coal-fired power stations as well as fission-driven nuclear power stations.

The largest current experiment is the Joint European Torus [JET]. In 1997, JET produced a peak of 16.1 MW of fusion power (65% of input power), with fusion power of over 10 MW sustained for over 0.5 sec. In June 2005, the construction of the experimental reactor ITER, designed to produce several times more fusion power than the power put into the plasma over many minutes, was announced. The production of net electrical power from fusion is planned for DEMO, the next generation experiment after ITER.

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Selected picture

Credit: http://www.starwars.com

Ecumenopolis (from Greek: οικουμένη, meaning world, and πόλις (polis) meaning city, thus a city made of the whole world; pl. ecumenopolises or ecumenopoleis) is a word invented in 1967 by the Greek city planner Constantinos Doxiadis to represent the idea that in the future urban areas and megalopolises would eventually fuse and there would be a single continuous worldwide city as a progression from the current urbanization and population growth trends. Before the word ecumenopolis had been coined, the American religious leader Thomas Lake Harris (1823-1906) mentioned city-planets in his verses, and science fiction author Isaac Asimov uses the city-planet Trantor as the setting of some of his novels.

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News

Wikinews Science and technology portal

• May 28: Soyuz TMA-15 launches crew to International Space Station
• May 24: Space Shuttle Atlantis lands safely at Edwards Air Force Base
• May 15: Mexico presents first population-wide genome map for a Latin country
• May 15: Wikinews Shorts: May 15, 2009
• May 15: ESA launches Herschel Space Observatory and Planck Satellite
• May 15: Egyptian archaeologists announce discovery of marble statue and 132 new sites
• May 14: Flight simulation site Avsim 'destroyed' by hackers
• May 12: NASA launches Space Shuttle Atlantis
• May 1: Iraqi based war video game pulled by publisher
• April 30: Aurora Borealis caused by electrical space tornadoes

Did you know...

• ... that both the Mozilla Firefox and Microsoft Internet Explorer web browsers descended from Netscape Navigator?

• ... that a coherer, hot wire barretter, electrolytic detector, cat's whisker and vacuum tube were all types of radio detectors?

• ... that in 2008 Hewlett-Packard created a prototype of the theoretical fourth and last passive circuit element, the memristor, that may one day revolutionize electronics, although the theory was devised in 1971?

• ... 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?

• ... 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?

Lists of basic topics   (all)

Main outlines: Outline of science and Outline of technology.

Aerospace • Agriculture • Architecture • Artificial intelligence • Automation • Automobile • Big Science • Biotechnology • Cartography • Chemical engineering • Communication • Computer science (Information technology, Internet, Programming, Software engineering) • Construction • Design • Education • Energy development • Energy storage • Engineering • Ergonomics • Family and consumer science • Firefighting • Forensics • Forestry • Free software • Health • Industry • Industrial machinery • Information technology • Internet • Library science (aka "Library and information science") • Machines • Management • Manufacturing • Marketing • Military • Mining • Nanotechology • Nuclear technology • Radio • Robotics • Space exploration • Telecommunication (Internet) • Transport • Vehicles

Notes

Categories   (all)

Main categories: Technology and Applied sciences

Agriculture & Agronomy • Architecture • Automation • Biotechnology • Blu-ray • Cartography • Chemical engineering • Communication (Media studies • Telecommunications) • Construction • Design • Digital divide • Earthquake engineering • Electronics • Energy • Ergonomics • Firefighting • Fire prevention • Forensics • Forestry • Industry • Information science • Information technology • Internet • Management • Manufacturing • Marketing • Medicine (Unsolved problems in neuroscience) • Metalworking • Microtechnology • Military science • Mining • Nanotechnology • Nuclear technology • Nutrition • Optics • Plumbing • Robotics • Sound technology • Space exploration • Technology forecasting • Tools

Computing:  Artificial intelligence • Classes of computers • Companies • Computer architecture • Computer model • Computer science • Computer security • Computing and society • Data • Embedded systems • Free software • Human-computer interaction • Information systems • Internet • Mobile Internet • Languages • Multimedia • Networks • Industrial Networks • Operating systems • Platforms • Product lifecycle management • Programming • Real-time computing • Software • Software engineering • Unsolved problems in computer science • More...

Electronics:   Avionics • RF & MMIC Design • Circuits • Companies • Connectors • Consumer electronics • Digital electronics • Digital media • Electrical components • Electronic design • Electronics manufacturing • Embedded systems • Integrated circuits • Microwave technology • Molecular electronics • Water technology • Optoelectronics • Quantum electronics • RFID • Radio electronics • Semiconductors • Signal cables • Surveillance • Telecommunications • Terminology • More...

Engineering:  Aerospace engineering • Bioengineering • Chemical engineering • Civil engineering • Electrical engineering • Environmental engineering • Materials science • Mechanical engineering • Nuclear technology • Software engineering • Structural engineering • Systems engineering

Transportation:   By country • Automobiles • Aviation • Cycling • Public transport • Rail transport • Road transport • Shipping • Spaceflight • Vehicles • Water transport

Technology timelines

Topics   (all)

Lists of topics   (all)

Glossaries   (all)

Air pollution dispersion terminology • Blogging • Broadcasting • Computing and IT

(Alternative terms for free software • Computer • Fisheries • Fuel cell terms • Internet • Legal terms • Object-oriented programming • Unified Modeling Language) • Firefighting (Equipment • Wildland fires) • Library and information science • Machine vision • Metalworking terminology • Mill machinery • Nautical • Telephony • Textile manufacturing • Transport (Aviation, aerospace, and aeronautics • Automotive design • Rail (Passenger rail (NZ railfan • UK railfan • U.S. railfan) • Woodworking (Joinery) • Winemaking

Related portals   (all)

Technology and applied sciences

Agronomy • Architecture (Bridges, Portal) • Artificial intelligence • Biotechnology • Electronics • Energy • Engineering • Hazardous Materials • Home improvement • Nanotechnology • Nuclear technology • Robotics

Information technology

Typography • Apple Inc. • Blu-ray • Computer networking (Internet (Forums)) • Computer science • Computer security • Microsoft • Python programming • Software (Free software (Linux))

Transport

Aviation • Cars (Australian, Japanese) • Cycling • London transport • Nautical • Roads (U.S. Roads) • Spaceflight (Space tourism) • Trains (Rapid transit, UK Railways, UK Trams) • UK Waterways

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