Portal:Technology

Portal:Technology
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The Technology Portal

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Technology (Greek technologia (τεχνολογία) < techne (τέχνη) "craft" + -ologia (-ολογία) "science or discipline") is the knowledge, making and usage of tools, techniques, crafts, systems or methods of organization to benefit a group of humans, or humanity as a whole. Over two million years ago, human ancestors are believed to have used stone tools, one of the earliest examples of technology. Other early examples include the controlled use of fire, the use of clothing, and the development of agriculture.

These, and other technologies significantly affect how humans interact with the natural environment. Many important technological advances are related to transportation, some early examples being seaworthy boats, and the invention of the wheel. More recent examples include rail transport, automobiles, aviation, and spaceflight. Some technologies have improved our ability to interact and communicate with each other, such as the development of a written language, the printing press, the telephone, and most recently the Internet.

Selected article

Thorium decay chain from lead-212 to lead-208
Radioactive decay is the process in which an unstable atomic nucleus loses energy by emitting ionizing particles and radiation. This decay, or loss of energy, results in an atom of one type, called the parent nuclide transforming to an atom of a different type, called the daughter nuclide. For example: a carbon-14 atom (the "parent") emits radiation and transforms to a nitrogen-14 atom (the "daughter"). This is a random process on the atomic level, in that it is impossible to predict when a given atom will decay, but given a large number of similar atoms the decay rate, on average, is predictable.

The SI unit of radioactive decay is the becquerel (Bq). One Bq is defined as one transformation (or decay) per second. Since any reasonably-sized sample of radioactive material contains many atoms, a Bq is a tiny measure of activity; amounts on the order of TBq (terabecquerel) or GBq (gigabecquerel) are commonly used. Another unit of radioactivity is the curie, Ci, which was originally defined as the activity of one gram of pure radium, isotope Ra-226. At present it is equal, by definition, to the activity of any radionuclide decaying with a disintegration rate of 3.7 × 1010 Bq. The use of Ci is presently discouraged by the SI.

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Selected picture

Menlo Park Laboratory.JPG
Credit: Andrew Balet
One of Thomas Edison's major innovations was the first industrial research lab, which was built in Menlo Park, New Jersey.
...Archive/Nominations

Did you know...

...that the Vostok 4 mission was shortened because cosmonaut Pavel Romanovich Popovich accidentally told flight controllers that he was "observing thunderstorms". This was a coded signal requesting an abort because the cosmonaut was feeling ill, however Popovich was actually trying to inform ground controllers that he could see thunderstorms from space.
Other "Did you know" facts... Read more...

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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 • 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 Web • 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

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

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Technological concepts and issues • Appropriate technology • Diffusion of innovations • Doomsday device • High technology • History of science and technology • History of technology • Industry • Innovation • Knowledge economy • Persuasion technology • Pollution • Posthumanism • Precautionary principle • Research and development • Strategy of technology • Superpowers • Technicism • Technocapitalism • Technocriticism • Techno-progressivism • Technological convergence • Technological evolution • Technological determinism • Technological diffusion • Technological singularity • Technology acceptance model • Technology assessment • Technology lifecycle • Technology transfer • Technology Tree • Technorealism • Timeline of invention • Transhumanism

Technologies and applied sciences • Aerospace • Agriculture, agricultural science, & agronomy • Architecture • Artificial intelligence • Automation • Automobile • Big Science • Biotechnology • Cartography • Chemical engineering • Communication • Computer science (Computing, Programming, Software engineering, List of open problems in computer science) • Construction • Dentistry • Design • Education • Electronics • Energy development • Energy storage • Engineering • Ergonomics • Family and consumer science • Firefighting • Forensics • Forestry • Free software • Health sciences • Health • Industry • Information science • Information technology • Internet • Library and information science • Machines • Management • Manufacturing • Marketing • Mass communication • Mass production • Medicine (Unsolved problems in neuroscience) • Military science • Military technology and equipment • Mining • Nanotechnology • Nuclear technology • Nutrition • Packaging and labeling Processes • Robotics • Space exploration • Technology forecasting • Telecommunications • Tools • Transport • Vehicles • Weapons

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Technology and applied sciences

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Information technology

Apple Inc. • Blu-ray • Computer networking (InternetCscr-featured.svg, IRC) • Computer science (Artificial intelligence) • Computer security (Cryptography) • Google • Microsoft • Java • Python programming • Software (Free software, Linux) • Telecommunication • Typography

Transport

AviationCscr-featured.svg • Cars (Australian, Japanese) • Bicycles/Cycling • Buses • London TransportCscr-featured.svg • Nautical • Roads (Canada Roads, U.S. RoadsCscr-featured.svg, Michigan HighwaysCscr-featured.svg, New York Roads, Washington Roads) • Spaceflight • TrainsCscr-featured.svg (UK Railways, Railways in India, UK Trams) • UK Waterways



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Technology on Wikinews     Technology on Wikiquote     Technology on Wikibooks     Technology on Wikisource     Technology on Wiktionary     Technology on Wikimedia Commons
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References

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