Portal:Technology

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Technology is the practical use of science, including the making, modification or improvement, applied activity or behavior, use and knowledge of tools, machines, techniques, crafts, systems, methods of organization, or environmental modifications or arrangement in order to solve a problem, improve a preexisting solution to a problem, achieve a goal or perform a specific function. It can also refer to the collection of such tools, machinery, modifications, environmental arrangement and procedures. Technologies significantly affect human as well as other animal species' ability to control and adapt to their natural environments. The word technology comes from Greek τεχνολογία (technología); from τέχνη (téchnē), meaning "art, skill, craft", and -λογία (-logía), meaning "study of-". The term can be applied either generally or to many specific areas, examples of which include construction technology, medical technology and information technology.

The human species' use of technology began with the conversion of natural resources into simple tools. The prehistorical discovery of the ability to control fire increased the available sources of food and the invention of the wheel helped humans in travelling in and controlling their environment. Recent technological developments, including the printing press, the telephone, and the Internet, have lessened physical barriers to communication and allowed humans to interact freely on a global scale. However, not all technology has been used for peaceful purposes; the development of weapons of ever-increasing destructive power has progressed throughout history, from clubs to nuclear weapons.

Technology has affected society and its surroundings in a number of ways. In many societies, technology has helped develop more advanced economies (including today's global economy) and has allowed the rise of a leisure class. Many technological processes produce unwanted by-products, known as pollution, and deplete natural resources, to the detriment of the Earth and its environment. Various implementations of technology influence the values of a society and new technology often raises new ethical questions. Examples include the rise of the notion of efficiency in terms of human productivity, a term originally applied only to machines, and the challenge of traditional norms.

Philosophical debates have arisen over the present and future use of technology in society, with disagreements over whether technology improves the human condition or worsens it. Neo-Luddism, anarcho-primitivism, and similar movements criticise the pervasiveness of technology in the modern world, opining that it harms the environment and alienates people; proponents of ideologies such as transhumanism and techno-progressivism view continued technological progress as beneficial to society and the human condition. Indeed, until recently, it was believed that the development of technology was restricted only to human beings, but recent scientific studies indicate that other primates and certain dolphin communities have developed simple tools and learned to pass their knowledge to other generations.

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Parallel computing
Parallel computing is a form of computation in which many calculations are carried out simultaneously, operating on the principle that large problems can often be divided into smaller ones, which are then solved concurrently. There are several different forms of parallel computing: bit-level-, instruction-level-, data-, and task parallelism. As power consumption by computers has become a concern in recent years, parallel computing has become the dominant paradigm in computer architecture, mainly in the form of multicore processors. Parallel computers can be roughly classified according to the level at which the hardware supports parallelism—with multi-core and multi-processor computers having multiple processing elements within a single machine, while clusters, MPPs, and grids use multiple computers to work on the same task. Parallel computer programs are more difficult to write than sequential ones, because concurrency introduces several new classes of potential software bugs, of which race conditions are the most common. Communication and synchronization between the different subtasks are typically one of the greatest obstacles to getting good parallel program performance. The speed-up of a program as a result of parallelization is given by Amdahl's law.


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Alfonse D'Amato

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Ben Gascoigne
Ben Gascoigne (1915–2010) was an optical astronomer and expert in photometry. Born in New Zealand, Gascoigne moved to Australia to work at the Commonwealth Solar Observatory at Mount Stromlo in Canberra. He became skillful in the design and manufacture of optical devices such as telescope elements. He and astronomer Gerald Kron used modernised telescopes at Mount Stromlo to determine that the distance between the Milky Way and the Magellanic Cloud dwarf galaxies had been underestimated by a factor of two. Because this measurement was used to calibrate other distances in astronomy, the result effectively doubled the estimated size of the universe. They also found that star formation in the Magellanic Clouds had occurred more recently than in the Milky Way; this overturned the prevailing view that both had evolved in parallel. Gascoigne was involved in the conception and commissioning of the Anglo-Australian Telescope, Australia's largest optical telescope. He was made an Officer of the Order of Australia for his contributions to astronomy and to the Anglo-Australian Telescope. After he retired, Gascoigne acted as curator and photographer for his wife, artist Rosalie Gascoigne, using his technical skills to make her artworks resilient for public display.


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Jane Harman
Jane Harman, "Introduction of the "Select Agent Program and Biosafety Improvement Act of 2008" (2008)

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Card puncher - NARA - 513295.jpg
Credit: United States Bureau of the Census

A keypunch is a device for precisely punching holes into punch cards at specific locations. For Hollerith machines, other unit record machines, and computers, the resulting punched cards contained data to be processed.


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Technology categories

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Technology

Technological concepts and issues – Appropriate technology • Clean technology • Diffusion of innovations in science • Doomsday device • Ecotechnology • Environmental technology • High technology • History of science and technology • History of technology • Industry • Innovation • Knowledge economy • Persuasion technology • Pollution • Posthumanism • Precautionary principle • Research and development • Science, technology, and society • Strategy of technology • Superpowers • Sustainable technology • 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 • Computing (Computer science, List of open problems in computer science, Programming, Software engineering, Information technology, Computer engineering) • Construction • Design • Electronics • Energy development • Energy storage • Engineering • Ergonomics • Firefighting • Forensics • Forestry • Free software • Health sciences • Health Informatics • Industry • Information science • Internet • Library and information science • Machines • Management • Manufacturing • Mass communication • Mass production • Medicine (Unsolved problems in neuroscience) • Military science • Military technology and equipment • Mining • Nanotechnology • Nuclear technology • Packaging and labeling • Processes • Robotics • Space exploration • Technology forecasting • Telecommunications • Tools • Transport • Vehicles • Weapons

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From the Wikinews Science and technology portal
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