The Technology Portal
Technology ("science of craft", from Greek τέχνη, techne, "art, skill, cunning of hand"; and -λογία, -logia) is the sum of any 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 invention of shaped stone tools followed by the discovery of how to control fire increased sources of food. The later Neolithic Revolution extended this, and quadrupled the sustenance available from a territory. The invention of the wheel helped humans to travel in and control their environment. (Full article...)
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The Uinta Basin Rail project is a proposed 100-mile (160 km) rail line to connect the shale oil rich Uinta Basin region of eastern Utah to the national rail network. Numerous proposals have been made, some as far back as 1902, that are still under consideration. The current effort is a public-private partnership between a coalition of 7 counties in Utah, the Rio Grande Pacific Corporation and Drexel Hamilton Infrastructure Partners. If the rail line is built it will be the first major greenfield rail line built in the United States since the line to the Powder River Basin was built in the 1970s. Construction for this line is projected to begin in 2021; however, environmental groups have filed lawsuits to try to stop construction. (Full article...)- State Route 3 (SR 3) is a 59.81-mile-long (96.25 km) state highway in the U.S. state of Washington, serving the Kitsap Peninsula in Mason and Kitsap counties. The highway begins at U.S. Route 101 (US 101) south of Shelton and travels northeast onto the Kitsap Peninsula through Belfair to Gorst, where it intersects SR 16 and begins its freeway. SR 3 travels west of Bremerton, Silverdale and Poulsbo before it terminates at the eastern end of the Hood Canal Bridge, signed as SR 104. The highway is designated as a Strategic Highway Network (STRAHNET) corridor under the National Highway System as the main thoroughfare connecting both parts of Naval Base Kitsap and is also part of the Highways of Statewide Significance program.
SR 3 was established during the 1964 highway renumbering and codified in 1970 as the successor to Secondary State Highway 14 (SSH 14) from Shelton to Belfair, Primary State Highway 14 (PSH 14) from Belfair to Gorst, and PSH 21 from Gorst to the Hood Canal Bridge. PSH 21 was previously part of State Road 21 from 1915 to 1937, while PSH 14 was part of State Road 14 and the Navy Yard Highway from 1919 to 1937. The present SR 3 freeway was opened in 1968 in the Bremerton area and was extended north to Silverdale in 1973, to Bangor in 1981, and to Poulsbo in 1983. (Full article...)
The Leslie speaker is a combined amplifier and loudspeaker that projects the signal from an electric or electronic instrument and modifies the sound by rotating a baffle chamber ("drum") in front of the loudspeakers. A similar effect is provided by a rotating system of horns in front of the treble driver. It is most commonly associated with the Hammond organ, though it was later used for the electric guitar and other instruments. A typical Leslie speaker contains an amplifier, a treble horn and a bass speaker—though specific components depend upon the model. A musician controls the Leslie speaker by either an external switch or pedal that alternates between a slow and fast speed setting, known as "chorale" and "tremolo".
The speaker is named after its inventor, Donald Leslie, who began working in the late 1930s to get a speaker for a Hammond organ that better emulated a pipe or theatre organ, and discovered that baffles rotating along the axis of the speaker cone gave the best sound effect. Hammond were not interested in marketing or selling the speakers, so Leslie sold them himself as an add-on, targeting other organs as well as Hammond. Leslie made the first speaker in 1941. The sound of the organ being played through his speaker received national radio exposure across the US, and it became a commercial and critical success. It soon became an essential tool for most jazz organists. In 1965, Leslie sold his business to CBS who, in 1980, sold it to Hammond. Suzuki Musical Instrument Corporation subsequently acquired the Hammond and Leslie brands. (Full article...)
Delaware Route 100 (DE 100) is a state highway in New Castle County, Delaware. The route runs from DE 4 near Elsmere to the Pennsylvania border near Montchanin, where it continues into Pennsylvania as State Route 3100 (SR 3100, Chadds Ford Road). The road runs through suburban areas of northern New Castle County. The route intersects DE 2 in Elsmere before forming separate concurrencies with DE 48 and DE 141 from west of Wilmington north to Greenville. In Greenville, there is an interchange with DE 52. North of Greenville, DE 100 continues by itself to the Pennsylvania border, intersecting DE 92 in Montchanin. DE 100 was first designated in the 1930s to run from DE 52 to the Pennsylvania border, where it connected to Pennsylvania Route 100 (PA 100) until the southern terminus of that route was truncated away from the state line in 2003. By the 1970s, it was extended south to DE 4. The route was realigned to follow parts of DE 48 and DE 141 by 1990. (Full article...)
Mysore Airport (IATA: MYQ, ICAO: VOMY), also known as the Mandakalli Airport, is an airport serving Mysore, a city in the Indian state of Karnataka. It is located near the village of Mandakalli, 10 kilometres (6.2 mi) south of the city, and is owned and operated by the Airports Authority of India (AAI). As of October 2019, the airport has regular daily flights to Chennai, Hyderabad, Bangalore and Goa.
The airport's history dates to the 1940s, when it was constructed by the Kingdom of Mysore. Passenger service, training flights of the Indian Air Force, and other operations took place at Mysore Airport during its first several decades. (Full article...)- New York State Route 45 (NY 45) is a north–south state highway in central Rockland County, New York, in the United States. It spans 8.57 miles (13.79 km) from the village of Chestnut Ridge at the New Jersey–New York border, where it becomes County Route 73 (CR 73) in Bergen County, New Jersey, to U.S. Route 202 (US 202) in the town of Haverstraw. Though an interchange does exist between NY 45 and the Palisades Interstate Parkway, the route has no access to the New York State Thruway.
NY 45 was originally designated as New York State Route 305 as part of the 1930 renumbering of state highways in New York. It was renumbered to New York State Route 94 in the early 1940s before becoming NY 45 on January 1, 1949. (Full article...)
A missed call is a telephone call that is deliberately terminated by the caller before being answered by its intended recipient, in order to communicate a pre-agreed message. It is a form of one-bit messaging.
Missed calls are common in emerging markets where mobile phones with limited outgoing calls are widely used; as the call is not actually completed and connected, it does not carry a cost to the caller, hence they can conserve their remaining prepaid credit. Specific patterns of consecutive missed calls have been developed in some countries to denote specific messages. Missed calls are also referred to in some parts of Africa as beeping, flashing in Nigeria, a flashcall in Pakistan, miskol in the Philippines and ring-cut in Sri Lanka. (Full article...)
Selected picture
Image credit: Joaquim Alves GasparAn animation showing how to use a vernier caliper, which is a caliper that uses a vernier scale to interpolate linear measurements. Vernier calipers can measure internal and external dimensions using, respectively, the uppermost and lower jaws, and also depths, using the depth probe (located at the right end). In this example, the first two digits (2.4) are decided by the location of the zero of the vernier scale in the centimeter scale, and the last digit (0.07), by the first line of the vernier scale that exactly matches a line of the centimeter scale above.
Credit: Mike McGregorThe OLPC XO-1 is an inexpensive subnotebook laptop computer intended to be distributed to children in developing countries.
Credit: Berthold WernerA telephone, or phone, is a telecommunications device that converts sound, typically the human voice, into electronic signals suitable for transmission via cables or other transmission media over long distances through satellite.
Photo credit: Eric PierceThe pin tumbler lock is a lock mechanism that utilizes a group of pins of varying lengths to prevent opening the lock without the correct key. Pin tumblers are most commonly employed in cylinder locks, but may also be found in tubular or radial locks.
When the correct key is inserted, the gaps between the key pins (red) and driver pins (blue) align with the edge of the plug (yellow).
Image credit: WikipedianProlificAn animated cut-away diagram of a typical fuel injector, which is used to spray controlled amounts of petrol (gasoline) into an internal combustion engine. A solenoid is activated when fuel is intended to be delivered to the engine, causing the plunger to become pulled toward the solenoid by magnetic force. This uncovers the valve opening, allowing fuel to flow into the atomiser and out the spray tip. The route of fuel is shown in orange; grey/blue indicates no fuel present.
Photo credit: L Cpl. Samantha L. Jones, USMCNine Marines from Mike Battery, 4th Battalion, 14th Marines operate the 155mm M198 howitzer in November 2004. The battery was based at Camp Fallujah, Iraq and was supporting Operation Phantom Fury. All nine members of the M198 crew are present.- An overhead power line is a structure used in electric power transmission and distribution to transmit electrical energy along large distances. It consists of one or more conductors suspended by towers or utility poles.
The semi-submersible oil platform P-51, operated by Brazilian energy company Petrobras, being positioned by tugboats. Semisubs sit on pontoons located under the ocean surface, with the operating deck atop columns, above the sea level. In this manner, they are relatively protected from wave action.
Photo credit: Eric PierceThe four-stroke cycle of an internal combustion engine is the cycle most commonly used for automotive and industrial purposes today, including cars, trucks, and generators.
The cycle was invented by Nikolaus Otto in 1876, and is also called the Otto cycle. The cycle is characterized by four strokes, or straight movements in a single direction, of the piston.
Photograph: Uwe AranasA filling station in Sabah, Malaysia, operated by Royal Dutch Shell. Filling stations, also known under a wide variety of names, are facilities that sell fuel and engine lubricants for motor vehicles. They include one or more fuel dispensers, which distribute fuels such as gasoline and diesel into the tanks within vehicles and calculate the financial cost of the fuel transferred. Filling stations may also include air compressors and electricity sockets, which may inflate tyres or offer charging stations. Many filling stations also incorporate a convenience store, where customers can purchase snacks and other goods.
The Australia Telescope Compact Array is a radio telescope operated by the Commonwealth Scientific and Industrial Research Organisation (CSIRO) at the Paul Wild Observatory, 25 km (16 mi) west of the town of Narrabri in New South Wales, Australia. The telescope is an array of six identical dishes each 22 metres (72 ft) in diameter, which commonly operate in aperture synthesis mode to produce images from radio waves. Five of the dishes can be moved along a 3-kilometre (2 mi) railway track; the sixth is situated three kilometres west of the end of the main track. Each dish weighs about 270 tonnes (270 long tons; 300 short tons).
This photograph, showing five of the Australia Telescope Compact Array's dishes, was taken around 1984, in the late phase of the construction process. It is a long-exposure photograph taken in darkness in the late evening; during the exposure, the photographer, John Masterson, walked around the dishes firing off over 130 flashes using a hand-held flash gun.
Diagram: H Padleckas and Ju gatsu mikkaA diagram showing a side and underside view of an 18-wheeler semi-trailer truck with an enclosed cargo space. The underside view shows the arrangement of the wheels, and in blue, the axles, drive shaft, and differentials.
The numbered parts are:
'"`UNIQ--templatestyles-00000010-QINU`"'
#tractor unit
#semi-trailer (detachable)
#engine compartment
#cabin
#sleeper (not present in all trucks)
#air dam
#fuel tanks
#fifth-wheel coupling
#enclosed cargo space
#landing gear (legs for when semi-trailer is detached)
#tandem axles
A diagram showing the parts of a tugboat, a boat used to maneuver large ships in harbours, over the open sea, or through rivers and canals. They also tow barges, disabled ships, and oil rigs. Equipped with powerful engines producing thousands of horsepower, extensive rigging equipment, and a fender of tires for protection, tugboats can push or tow large vessels with high precision and speed.
A disc of copper made by continuous casting, the process whereby molten metal is solidified into a "semifinished" state for subsequent rolling in the finishing mills. Continuous casting replaced the creation of ingots using stationary moulds. The process allows lower-cost production of metal sections with better quality, due to the inherently lower costs of continuous, standardised production of a product, as well as providing increased control over the process through automation. After casting, this disc was then etched to achieve its final state.
Photograph: MyrabellaThe Nice tramway crossing Place Garibaldi, Nice, where it lowers its pantograph and is powered by batteries. This 8.7-kilometre (5.4 mi), single-line tramway is operated by Veolia Transdev. It opened on 24 November 2007, replacing bus lines 1, 2, 5 and 18.
A billet of enriched uranium, which is uranium where the percent composition of uranium-235 (235U) has been increased through the process of isotope separation. Enriched uranium is a critical component for both civil nuclear power generation and military nuclear weapons.
Photograph: National Photo Company, Restoration: Adam CuerdenThe William Crooks is a 4-4-0 steam locomotive that was the first locomotive to operate in the U.S. state of Minnesota, beginning in 1861. It was named after William Crooks, the chief mechanical engineer for the St. Paul and Pacific Railroad, who earlier served as a colonel in the 6th Minnesota Volunteer Infantry Regiment during the American Civil War. Crooks laid out the initial ten-mile track between Minneapolis and St. Paul on which the locomotive operated. It was retired from regular service in 1897, but operated special services for several further decades. It is now in the Lake Superior Railroad Museum in Duluth.- A wheel is a circular component that is intended to rotate on an axial bearing. The wheel is one of the main components of the wheel and axle which is one of the six simple machines.
Photograph credit: Dllu
The N700 Series Shinkansen is a Japanese Shinkansen high-speed train with tilting capability developed jointly by JR Central and JR West. It has been used on the Tokaido and San'yō Shinkansen lines since 2007. This photograph shows the train travelling at approximately 300 km/h through Himeji Station, and was captured with a line scan camera using strip photography.
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Did you know -
- ... that Research Policy is regarded as the leading journal in the field of innovation studies?
- ... that technology developed for use in inkjet printers helped make the automated white blood cell differential, a common blood test, possible?
- ... that the melt-blowing technology used to create N95 respirators was previously used to produce ready-made ribbon bows and bra cups?
- ... that Guy Parmelin, now President of Switzerland, opened the study program of cyber security of the Lucerne School of Information Technology in 2018?
- ... that Mary Earle was born near Ben Nevis, and although she became a professor of food technology in New Zealand, she never forgot her Scottish roots?
- ... that Theresa M. Korn turned down a scholarship to the Carnegie Institute of Technology in order to become the institute's first female engineer?
Top 10 WikiProject Technology Popular articles of the month
YouTube is an American online video sharing and social media platform owned by Google. It was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim. It is the second most visited website, right after Google itself. YouTube has more than one billion monthly users who collectively watch more than one billion hours of videos each day. , videos were being uploaded at a rate of more than 500 hours of content per minute. (Full article...)
Musk at the Royal Society admissions day in London, 2018
Elon Reeve Musk FRS (/ˈiːlɒn/; born June 28, 1971) is an entrepreneur and business magnate. He is the founder, CEO, and Chief Engineer at SpaceX; early-stage investor, CEO, and Product Architect of Tesla, Inc.; founder of The Boring Company; and co-founder of Neuralink and OpenAI. With an estimated net worth of around US$243 billion as of January 2022, Musk is the wealthiest person in the world according to both the Bloomberg Billionaires Index and the Forbes real-time billionaires list. (Full article...)
Google LLC is an American multinational technology company that specializes in Internet-related services and products, which include online advertising technologies, a search engine, cloud computing, software, and hardware. It is considered one of the Big Five companies in the American information technology industry, along with Amazon, Apple, Meta (Facebook)
and Microsoft. (Full article...)
YouTube Premium (formerly YouTube Red) is a subscription service offered by the video platform YouTube. The service provides ad-free access to content across the service, as well as access to premium YouTube Originals programming produced in collaboration with the site's creators, downloading videos and background playback of videos on mobile devices, and access to the YouTube Music music streaming service. (Full article...)
Facebook is an American online social media and social networking service owned by Meta Platforms. Founded in 2004 by Mark Zuckerberg with fellow Harvard College students and roommates Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes, its name comes from the face book directories often given to American university students. Membership was initially limited to Harvard students, gradually expanding to other North American universities and, since 2006, anyone over 13 years old. As of 2020, Facebook claimed 2.8 billion monthly active users, and ranked seventh in global internet usage. It was the most downloaded mobile app of the 2010s. (Full article...)
Amazon.com, Inc. (/ˈæməzɒn/ AM-ə-zon) is an American multinational technology company which focuses on e-commerce, cloud computing, digital streaming, and artificial intelligence. It is one of the Big Five companies in the U.S. information technology industry, along with Google (Alphabet Inc.), Apple, Meta (Facebook), and Microsoft. It has been referred to as "one of the most influential economic and cultural forces in the world", and the world's most valuable brand. (Full article...)
Netflix, Inc. is an American subscription streaming service and production company. Launched on August 29, 1997, it offers a library of films and television series through distribution deals as well as its own productions, known as Netflix Originals. (Full article...)
iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that powers many of the company's mobile devices, including the iPhone and iPod Touch; the term also included the versions running on iPads until the name iPadOS was introduced with version 13 in 2019. It is the world's second-most widely installed mobile operating system, after Android. It is the basis for three other operating systems made by Apple: iPadOS, tvOS, and watchOS. It is proprietary software, although some parts of it are open source under the Apple Public Source License and other licenses. (Full article...)
WhatsApp Messenger, or simply WhatsApp, is an internationally available American freeware, cross-platform centralized instant messaging (IM) and voice-over-IP (VoIP) service owned by Meta Platforms. It allows users to send text messages and voice messages, make voice and video calls, and share images, documents, user locations, and other content. WhatsApp's client application runs on mobile devices but is also accessible from desktop computers, as long as the user's mobile device remains connected to the Internet while they use the desktop app. The service requires a cellular mobile telephone number to sign up. In January 2018, WhatsApp released a standalone business app targeted at small business owners, called WhatsApp Business, to allow companies to communicate with customers who use the standard WhatsApp client. (Full article...)
macOS (/ˌmækoʊˈɛs/; previously Mac OS X and later OS X) is a proprietary graphical operating system developed and marketed by Apple Inc. since 2001. It is the primary operating system for Apple's Mac computers. Within the market of desktop and laptop computers it is the second most widely used desktop OS, after Microsoft Windows and ahead of Chrome OS. (Full article...)
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- December 2, 2021 – COVID-19 pandemic
- The Medicines and Healthcare products Regulatory Agency approves GSK and Vir Biotechnology's sotrovimab antibody treatment, after a clinical trial found that the treatment reduced the risk of hospital admission and death by 79% in vulnerable adults if administered within five days of symptoms developing. (The Guardian)
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- Jack Dorsey resigns as the CEO of Twitter and is succeeded by Chief technology officer Parag Agrawal. (CNBC)
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