The Technology Portal
Technology ("science of craft", from Greek τέχνη, techne, "art, skill, cunning of hand"; and -λογία, -logia) is the sum of techniques, skills, methods, and processes used in the production of goods or services or in the accomplishment of objectives, such as scientific investigation. Technology can be the knowledge of techniques, processes, and the like, or it can be embedded in machines to allow for operation without detailed knowledge of their workings. Systems (e. g. machines) applying technology by taking an input, changing it according to the system's use, and then producing an outcome are referred to as technology systems or technological systems.
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 in 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.
An air well
or aerial well
is a structure or device that collects water by promoting the condensation
from air. Designs for air wells are many and varied, but the simplest designs are completely passive, require no external energy source and have few, if any, moving parts. Three principal designs are used for air wells: high mass, radiative and active. High-mass air wells were used in the early 20th century, but the approach failed. From the late 20th century onwards, low-mass, radiative collectors proved to be much more successful. Active collectors collect water in the same way as a dehumidifier
; although the designs work well, they require an energy source, making them uneconomical except in special circumstances.
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Did you know...
Joseph Francis Shea
(1926–1999) was an aerospace engineer and NASA
manager. Born in the Bronx
, New York
, he was educated at the University of Michigan
, receiving a Ph.D. in Engineering Mechanics
in 1955. After working for Bell Labs
on the radio inertial guidance system
of the Titan I intercontinental ballistic missile
, he was hired by NASA in 1961. As Deputy Director of NASA's Office of Manned Space Flight, and later as head of the Apollo Spacecraft Program Office, Shea played a key role in shaping the course of the Apollo program
, helping to lead NASA to the decision in favor of lunar orbit rendezvous
and supporting "all up" testing of the Saturn V
rocket. While sometimes causing controversy within the agency, Shea was remembered by his former colleague George Mueller
as "one of the greatest systems engineers of our time". Deeply involved in the investigation of the Apollo 1
fire, Shea suffered a nervous breakdown as a result of the stress that he suffered. He was removed from his position and left NASA shortly afterwards. From 1968 until 1990 he worked as a senior manager at Raytheon
in Lexington, Massachusetts
, and thereafter became an adjunct professor of aeronautics and astronautics at MIT
. While Shea served as a consultant for NASA on the redesign of the International Space Station
in 1993, he was forced to resign from the position due to health issues.
- Parent project
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- November 18, 2019 –
- Japan opens its first military arms show, as it tries to improve its military technology to combat external threats from China and North Korea. (Reuters)
- November 11, 2019 –
- The wreckage of United States Navy submarine USS Grayback (SS-208), which disappeared with its 80 crew members in the East China Sea on February 27, 1944 during World War II, is discovered on the sea floor using new drone technology. (BBC News) (CNN)
- September 27, 2019 –
- UK Prime Minister Boris Johnson is formally referred to the Independent Office for Police Conduct (IOPC) amid allegations of corruption during his tenure as Mayor of London. Johnson is alleged to have awarded a close friend, American technology entrepreneur Jennifer Arcuri, "thousands of pounds" in public business funding, according to the The Sunday Times. (The Guardian)
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