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The Technology poortal

A steam turbine with the case opened. Such turbines produce most of the electricity used today. Electricity consumption and living standards are highly correlated. Electrification is believed to be the most important engineering achievement of the 20th century.

Technology ("science of craft", from Greek τέχνη, techne, "art, skill, cunning of hand"; and -λογία, -logia) is first robustly defined by Jacob Bigelow in 1829 as: "...principles, processes, and nomenclatures of the more conspicuous arts, particularly those which involve applications of science, and which may be considered useful, by promoting the benefit of society, together with the emolument [compensation ] of those who pursue them" .

  • Principle is a term defined current-day by Merriam-Webster as: "a comprehensive and fundamental law, doctrine, or assumption", "a primary source", "the laws or facts of nature underlying the working of an artificial device", "an ingredient (such as a chemical) that exhibits or imparts a characteristic quality".
  • Process is a term defined current-day by the United States Patent Laws (United States Code Title 34 - Patents) published by the United States Patent and Trade Office (USPTO) as follows: "The term 'process' means process, art, or method, and includes a new use of a known process, machine, manufacture, composition of matter, or material."
  • Nomenclature is term defined by Merriam-Webster as: "name, designation", "the act or process or an instance of naming", "a system or set of terms or symbols especially in a particular science, discipline, or art" .
  • Application of Science is a term defined current-day by the United States' National Academies of Sciences, Engineering, and Medicine as: "...any use of scientific knowledge for a specific purpose, whether to do more science; to design a product, process, or medical treatment; to develop a new technology; or to predict the impacts of human actions."

The simplest form of technology is the development and use of basic tools. The prehistoric discovery of how to control fire and the later Neolithic Revolution increased the available sources of food, and the invention of the wheel helped humans to travel in and control their environment. Developments in historic times, 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.

Technology has many effects. It 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 Earth's environment. Innovations have always influenced the values of a society and raised new questions of the ethics of technology. Examples include the rise of the notion of efficiency in terms of human productivity, and the challenges of bioethics.

Philosophical debates have arisen over the use of technology, with disagreements over whether technology improves the human condition or worsens it. Neo-Luddism, anarcho-primitivism, and similar reactionary movements criticize the pervasiveness of technology, arguing 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.

Selected article

Astrophysics Data System
The Astrophysics Data System is an online NASA database of over 7,000,000 astronomy and physics papers from both peer reviewed and non-peer reviewed sources. Abstracts are available free online for almost all articles, and full scanned articles are available in GIF and PDF format for older articles. New articles have links to electronic versions hosted at the journal's webpage, but these are typically available only by subscription (which most astronomy research facilities have). It is managed by the Harvard-Smithsonian Center for Astrophysics. ADS is an extremely powerful research tool, and has had a significant impact on the efficiency of astronomical research since it was launched in 1992. Literature searches which previously would have taken days or weeks can now be carried out in seconds via the sophisticated ADS search engine, which is custom-built for astronomical needs. Studies have found that the benefit to astronomy of the ADS is equivalent to several hundred million US dollars annually, and the system is estimated to have tripled the readership of astronomical journals. Use of ADS is almost universal among astronomers worldwide, and therefore ADS usage statistics can be used to analyze global trends in astronomical research.

In this month

The Trinity nuclear test, 16ms after detonation

Did you know...

Rans S-6 Coyote II from 1982

Featured biography

An original drawing by Zobel of a band-pass filter used for impedance matching
Otto Julius Zobel (1887–1970) was a design engineer who worked for the American Telephone & Telegraph Company (AT&T) in the early part of the 20th century. Zobel's work on filter design was revolutionary and led, in conjunction with the work of John R. Carson, to significant commercial advances for AT&T in the field of frequency division multiplex (FDM) telephone transmissions. Although much of Zobel's work has been superseded by more modern filter designs, it remains the basis of filter theory and his papers are still referenced today. Zobel invented the m-derived filter and the constant-resistance filter, which remains in use. Zobel and Carson helped to establish the nature of noise in electric circuits, concluding that—contrary to mainstream belief—it is not even theoretically possible to filter out noise entirely and that noise will always be a limiting factor in what it is possible to transmit. Thus, they anticipated the later work of Claude Shannon, who showed how the theoretical information rate of a channel is related to the noise of the channel.


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Henry Ward Beecher
Henry Ward Beecher, Proverbs from Plymouth Pulpit (1887)

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Technology categories

Main topics


Technological aspect of idea 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 • 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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