Portal:Technology

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 The Technology Portal 

The wheel, invented sometime before the 4th millennium BC, is one of the most ubiquitous and important technologies. This detail of the "Standard of Ur", c. 2500 BCE., displays a Sumerian chariot

Technology is the application of conceptual knowledge to achieve practical goals, especially in a reproducible way. The word technology can also mean the products resulting from such efforts, including both tangible tools such as utensils or machines, and intangible ones such as software. Technology plays a critical role in science, engineering, and everyday life.

Technological advancements have led to significant changes in society. The earliest known technology is the stone tool, used during prehistory, followed by the control of fire—which in turn contributed to the growth of the human brain and the development of language during the Ice Age, according to the cooking hypothesis. The invention of the wheel in the Bronze Age allowed greater travel and the creation of more complex machines. More recent technological inventions, including the printing press, telephone, and the Internet, have lowered barriers to communication and ushered in the knowledge economy. (Full article...)

Recognized articles -

Entries here consist of Good and Featured articles, which meet a core set of high editorial standards.

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  M-89 is an east–west state trunkline highway in the US state of Michigan that runs from near Ganges to Battle Creek. M-89 starts at an interchange with Interstate 196/US Highway 31 (I-196/US 31) and passes through Allegan, Kalamazoo County, Michigan, and Calhoun counties. The highway also briefly crosses the southwest corner of Barry County before it terminates an at intersection with Business Loop I-94 (BL I-94) on the northwestern side of downtown Battle Creek. In between the trunkline runs parallel to the Kalamazoo River through rural southwestern Michigan farmlands while also running through the middle of several smaller towns in the area.
  
  Dating back to 1919, M-89 was originally just a segment of the current highway between the Ganges area and Martin. Changes through the 1920s and 1930s moved the eastern end to Calhoun County. The last section was paved in the 1950s before the highway was rerouted in the Allegan, Michigan area. The last extensions into Battle Creek came in the 1960s and 1998. (Full article...)
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  Energy is sustainable if it "meets the needs of the present without compromising the ability of future generations to meet their own needs." Definitions of sustainable energy usually look at its effects on the environment, the economy, and society. These impacts range from greenhouse gas emissions and air pollution to energy poverty and toxic waste. Renewable energy sources such as wind, hydro, solar, and geothermal energy can cause environmental damage but are generally far more sustainable than fossil fuel sources.
  
  The role of non-renewable energy sources in sustainable energy is controversial. Nuclear power does not produce carbon pollution or air pollution, but has drawbacks that include radioactive waste, the risk of nuclear proliferation, and the risk of accidents. Switching from coal to natural gas has environmental benefits, including a lower climate impact, but may lead to a delay in switching to more sustainable options. Carbon capture and storage can be built into power plants to remove their carbon dioxide (CO₂) emissions, but this technology is expensive and has rarely been implemented. (Full article...)
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  The station on its opening day, September 24, 2016

  
  Angle Lake station is a Link light rail station in SeaTac, Washington. The elevated station is the southern terminus of the 1 Line and also includes a large parking garage. The light rail line travels north from Angle Lake through Tukwila, Seattle, Shoreline, Mountlake Terrace, and Lynnwood.
  
  The station was built as part of the South 200th Link Extension project, extending the light rail line south from its terminus at SeaTac Airport via a 1.6-mile-long (2.6 km) elevated guideway. The project was originally approved by voters in the 1996 "Sound Move" ballot measure, with a promise to open in 2006, but was deferred when funding was not found. The 2008 "Sound Transit 2" campaign was approved with funding for the station and extension, estimated to open in 2020; federal grants were obtained to accelerate design and construction, moving up the opening date to late 2016. (Full article...)
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  Seaforth station, April 2022

  
  Seaforth railway station is a suburban railway station in Gosnells, a suburb of Perth, Western Australia. It is on the Armadale line which is part of the Transperth network, and is 22.6 kilometres (14.0 mi) south-west of Perth station and 7.8 kilometres (4.8 mi) north of Armadale station. The station opened on 4 May 1948 with low-level platforms. High-level platforms were added in 1968. The station consists of two side platforms with a pedestrian level crossing. It is not fully accessible due to steep ramps and a lack of tactile paving.
  
  Services are operated by the Public Transport Authority. Peak services reach seven trains per hour in each direction, whilst off-peak services are four trains per hour. The station is one of the least used ones on the Transperth network, with just 136 boardings per day in October 2017. Since November 2023, the station has been temporarily closed for construction of the Victoria Park-Canning Level Crossing Removal Project and the Byford rail extension. (Full article...)
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  Dent in 1928

  
  Beryl May Dent MIEE (10 May 1900 – 9 August 1977) was an English mathematical physicist, technical librarian, and a programmer of early analogue and digital computers to solve electrical engineering problems. She was born in Chippenham, Wiltshire, the eldest daughter of schoolteachers. The family left Chippenham in 1901, after her father became head teacher of the then recently established Warminster County School. In 1923, she graduated from the University of Bristol with First Class Honours in applied mathematics. She was awarded the Ashworth Hallett scholarship by the university and was accepted as a postgraduate student at Newnham College, Cambridge.
  
  She returned to Bristol in 1925, after being appointed a researcher in the Physics Department at the University of Bristol, with her salary being paid by the Department of Scientific and Industrial Research. In 1927, John Lennard-Jones was appointed Professor of Theoretical physics, a chair being created for him, with Dent becoming his research assistant in theoretical physics. Lennard‑Jones pioneered the theory of interatomic and intermolecular forces at Bristol and she became one of his first collaborators. They published six papers together from 1926 to 1928, dealing with the forces between atoms and ions, that were to become the foundation of her master's thesis. Later work has shown that the results they obtained had direct application to atomic force microscopy by predicting that non-contact imaging is possible only at small tip-sample separations. (Full article...)
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  A 2007 Motor Coach D4500CL (3471) on the Glen Oaks-bound QM5 at Union Turnpike/164th Street in June 2018

  
  The QM1, QM5, QM6, QM7, QM8, QM31, QM35, and QM36 bus routes constitute a public transit line in New York City, operating express between Northeast Queens and Midtown or Downtown Manhattan. The routes operate primarily on Union Turnpike in Queens, and travel non-stop via Queens Boulevard, the Long Island Expressway, and the Midtown Tunnel or Queensboro Bridge between Queens and Manhattan.
  
  The routes are numbered based on their origin and destination; buses that run to Third Avenue in Midtown Manhattan are double-digit routes that start with the number "3" or "4", while all other routes are single-digit routes. In Manhattan, the QM1, QM5, and QM6 buses run via Sixth Avenue in Midtown; the QM31, QM35, and QM36 buses run via Third Avenue in Midtown; and the QM7 and QM8 buses run through the Financial District. In Queens, the QM1, QM7, and QM31 run to 188th Street and Horace Harding Expressway; the QM5, QM8, and QM35 run to 260th Street and Union Turnpike via the Horace Harding Expressway; and the QM6 and QM36 go to North Shore Towers. Some QM8 buses employ "Super Express" service, with larger non-stop sections during the trip. (Full article...)
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  The original Ma and Pa, with the former PRR's York–Hanover, Pennsylvania branch highlighted

  
  The Maryland and Pennsylvania Railroad (reporting mark MPA), colloquially known as the "Ma and Pa", was an American short-line railroad between York and Hanover, Pennsylvania, formerly operating passenger and freight trains on its original line between York and Baltimore, Maryland, from 1901 until the 1950s. The Ma and Pa was popular with railfans in the 1930s and 1940s for its antique equipment and curving, picturesque right-of-way through the hills of rural Maryland and Pennsylvania. Reflecting its origin as the unintended product of the merger of two 19th-century narrow-gauge railways, the meandering main line took 77.2 miles (124 km) to connect Baltimore and York (via Bel Air, Maryland and Delta, Pennsylvania), although the two cities are only 45 miles (72 km) apart.
  
  Passenger service on the railroad was discontinued on August 31, 1954, and its trackage in Maryland was abandoned in June 1958. The Maryland and Pennsylvania Railroad acquired a former 19-mile (31 km) Pennsylvania Railroad (PRR) branch line between York and Hanover in 1976, now operated by a successor corporation, York Railway. Most of the remaining original line in Pennsylvania was abandoned by 1984. (Full article...)

Selected picture

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  Escalator

  Credit: Stig Nygaard

  An escalator is a moving staircase for carrying people between floors of a building. The device consists of a motor-driven chain of individual, linked steps that move up or down on tracks, allowing the step treads to remain horizontal.
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  Hybrid-propellant rocket

  Photograph credit: Matt Steiner and Kees08

  A hybrid-propellant rocket is a rocket with an engine that uses propellants in two different phases, one solid and the other gaseous or liquid. The concept can be traced back to at least the 1930s.
  
  This picture shows a transparent 3D-printed hybrid-rocket fuel grain with dual helical fuel ports, a post-combustion chamber, and a de Laval nozzle, photographed prior to the hot-fire test. The motor used nitrous oxide as the oxidizer and Pyrodex pellets for the igniter.
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  Curiosity (rover)

  Photograph: NASA

  A self-portrait by the Mars rover Curiosity on October 31, 2012. The mosaic is stitched from a set of 55 images taken by the Mars Hand Lens Imager at "Rocknest," the spot in Gale crater where the mission's first scoop sampling took place. Self-portraits such as this help NASA document the state of the rover and track changes, such as dust accumulation and wheel wear.
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  Red telephone box

  Photograph: Christoph Braun

  A 'K6' model red telephone box outside of St Paul's Cathedral in London. These kiosks for a public telephone were designed by Sir Giles Gilbert Scott and painted "currant red" for easy visibility. Although such telephone boxes ceased production when the KX series was introduced in 1985, they remain a common sight in Britain and some of its colonies, and are considered a British cultural icon.
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  New York City Subway

  Map: CountZ

  A transit map of the New York City Subway, one of the oldest and most extensive public transportation systems in the world. Operated by the Metropolitan Transportation Authority of the State of New York, it has 468 stations in operation on 209 mi (337 km) of routes, with 842 miles (1,355 km) of track. It is the busiest rapid transit rail system by annual ridership in the Western Hemisphere, and fifth busiest in the world. Its stations are located throughout the boroughs of Manhattan, Brooklyn, Queens and the Bronx. Staten Island has its own rail line which is not part of the system, but is included in the map as well.
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  Telephone

  Credit: Berthold Werner

  A 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.
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  AgustaWestland AW109

  Photo: Ikiwaner

  An Agusta A109 rescue helicopter leaves Mount Pilatus, near Lucerne, Switzerland, after recovering a patient. Later renamed AgustaWestland AW109, the A109 is a helicopter manufactured by Agusta (now AgustaWestland) of Italy. It is a light-weight, twin-engine, eight-seat multi-purpose craft.
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  Brusio spiral viaduct

  Photo: David Gubler

  The Bernina Express passing over the Brusio spiral viaduct. Located near Brusio, Graubünden, Switzerland, the single track nine-arched stone spiral railway viaduct was opened in 1908. It is part of the World Heritage-listed Bernina railway.
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  Paddle steamer

  Daguerreotype credit: Unknown

  A daguerreotype from the 1850s of the Ben Campbell, a paddle steamer—a ship or boat driven by a steam engine that uses one or more paddle wheels to develop thrust for propulsion. The paddle wheel was the first form of mechanical propulsion for a boat, but has now been almost entirely superseded by more modern forms of marine propulsion.
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  Pin tumbler lock

  Photo credit: Eric Pierce

  The 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).
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  Mary Jackson

  Photograph credit: Langley Research Center; restored by Adam Cuerden

  Mary Jackson (1921–2005) was an African American mathematician and aerospace engineer at the National Advisory Committee for Aeronautics, which was succeeded by NASA in 1958. For most of her career, she worked at Langley Research Center in Hampton, Virginia; starting as a computer at the segregated West Area Computing division, she later took advanced engineering classes and, in 1958, became NASA's first black female engineer.
  
  After 34 years at NASA, Jackson had earned the most senior engineering title available. Realizing that she could not earn further promotions without becoming a supervisor, she accepted a demotion to become a manager of the Federal Women's Program in the NASA Office of Equal Opportunity Programs, as well as of the Affirmative Action Program. In this role, she worked to influence both the hiring and promotion of women in NASA's science, engineering and mathematics careers. She was portrayed by Janelle Monáe as a lead character in the 2016 film Hidden Figures. This picture, taken in 1980, shows Jackson working at NASA Langley.
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  Tugboat

  Image credit: Al2/Lycaon/Jeff Dahl

  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.
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  Ruby Loftus Screwing a Breech Ring

  Painting: Laura Knight

  Ruby Loftus Screwing a Breech Ring is a 1943 painting by the British painter Laura Knight depicting a young woman, Ruby Loftus (1921–2004), working at an industrial lathe as part of the British war effort in World War II. The painting was commissioned by the War Artists' Advisory Committee, and is now part of the Imperial War Museum's art collection. The painting brought instant fame to Loftus, and has been likened to the American figure of "Rosie the Riveter".
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  Aerospike engine

  Photo credit: Marshall Space Flight Center

  A test firing of twin linear XRS-2200 aerospike engines, originally built for the Lockheed Martin X-33, a next-generation, commercially operated reusable launch vehicle. The aerospike engine is a type of rocket engine that maintains its efficiency across a wide range of altitudes through the use of an aerospike nozzle. A vehicle with an aerospike engine uses 25-30% less fuel at low altitudes, where most missions have the greatest need for thrust.
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  Flat-four engine

  Photograph: ULPower Aero Engines

  The ULPower UL260i, a flat-four engine produced by ULPower Aero Engines of Belgium. Flat-four engines are flat engines with four cylinders arranged horizontally in two banks of two cylinders on each side of a central crankcase; they can be used in cars, motorcycles, or aircraft. This type of engine tends to be well-balanced and have efficient cooling, but is expensive to manufacture and considerably wider than other engines.
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  Mars rovers

  Photograph: NASA

  Two Jet Propulsion Laboratory engineers stand with three vehicles, providing a size comparison of three generations of Mars rovers. Front and center is the flight spare for the first Mars rover, Sojourner, which landed on Mars in 1997 as part of the Mars Pathfinder Project. On the left is a Mars Exploration Rover test vehicle, a working sibling to Spirit and Opportunity, which landed on Mars in 2004. On the right is a test rover for the Mars Science Laboratory, which landed Curiosity on Mars in 2012.
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  Wheel

  Credit: fir0002

  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.
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  Overhead power line

  Credit: Simon Koopmann

  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.
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  Laptop computer

  Credit: Mike McGregor

  The OLPC XO-1 is an inexpensive subnotebook laptop computer intended to be distributed to children in developing countries.
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  Semi-trailer truck

  Diagram: H Padleckas and Ju gatsu mikka

  A 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-0000001C-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
  

  
  

Main topics

General images -

The following are images from various technology-related articles on Wikipedia.

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  Top 30 AI patent applicants in 2016 (from Emerging technologies)
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  An axehead made of iron, dating from the Swedish Iron Age (from History of technology)
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  The preserved Rocket (from History of technology)
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  The wheel, invented sometime before the 4th millennium BC, is one of the most ubiquitous and important technologies. This detail of the "Standard of Ur", c. 2500 BCE., displays a Sumerian chariot. (from History of technology)
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  Self-replicating 3D printer (from Emerging technologies)
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  Eric M. C. Tigerstedt (1887–1925) was known as a pioneer of sound-on-film technology. Tigerstedt in 1915. (from Invention)
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  Newcomen steam engine for pumping mines (from History of technology)
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  Thomas Edison with his second phonograph, photographed by Levin Corbin Handy in Washington, April 1878 (from History of technology)
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  A rare 1884 photo showing the experimental recording of voice patterns by a photographic process at the Alexander Graham Bell Laboratory in Washington, D.C. Many of their experimental designs panned out in failure. (from Invention)
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  A late Bronze Age sword or dagger blade (from History of technology)
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  Agriculture preceded writing in the history of technology. (from History of technology)
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  A variety of stone tools (from History of technology)
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  The compartmented water wheel, here its overshot version (from History of technology)
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  Clock from Salisbury Cathedral, ca. 1386 (from History of technology)
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  Solid-state air batteries
  Li-Air composition (from Emerging technologies)
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  'BUILD YOUR OWN TELEVISION RECEIVER.' Science and Invention magazine cover, November 1928 (from Invention)
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  Edison electric light bulbs 1879–80 (from History of technology)
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  Design for a flying machine (c.1488) by da Vinci (from History of technology)
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  Walls at Sacsayhuaman (from History of technology)
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  3D printer (from Emerging technologies)
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  Dome of Florence Cathedral (from History of technology)
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  Pont du Gard in France, a Roman aqueduct (from History of technology)
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  Johannes Gutenberg's printing press was voted the most important invention of the second millennium. (from Invention)
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  NASA Fuel cell stack
  Direct-methanol cell (from Emerging technologies)
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  Ford assembly line, 1913. The magneto assembly line was the first. (from History of technology)
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  Alessandro Volta with the first electrical battery. Volta is recognized as an influential inventor. (from Invention)
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  A water-powered mine hoist used for raising ore, ca. 1556 (from History of technology)

Did you know (auto-generated) -

• ... that Kathanar – The Wild Sorcerer is being shot on a custom-built studio spanning 45,000 square feet (4,200 m²), utilizing the virtual production technology?
• ... that OPTi Inc. won a patent suit against Apple for unauthorized use of "predictive snooping" technology?
• ... that touch-screen technology, pay-at-the-pump, car phones, and Coca-Cola Cherry were shown at the 1982 World's Fair?
• ... that Criccieth Castle combined the "latest advances in military technology" with the "haphazard Welsh castle building style"?
• ... that Peter Corby's electric trouser press used technology designed for Concorde?
• ... that ice XVII (structure shown) potentially has a use in green technology as a medium for storing hydrogen?
• ... that the Japanese manga series Mink featured futuristic technology even though its creator was unfamiliar with computers?
• ... that it was Caltech experimental physicist Rana X. Adhikari's idea to build a gravitational-wave observatory in India?

Top 10 WikiProject Technology popular articles of the month

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  ChatGPT is a generative artificial intelligence chatbot developed by the American company OpenAI and launched in 2022. It uses large language models (LLMs) such as GPT-4o as well as other multimodal models to create human-like responses in text, speech, and images. It has access to features such as searching the web, using apps, and running programs. It is credited with accelerating the AI boom, an ongoing period of rapid investment in and public attention to the field of artificial intelligence (AI). Some observers have raised concern about the potential of ChatGPT and similar programs to displace human intelligence, enable plagiarism, or fuel misinformation. (Full article...)
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  YouTube search results, May 2025

  
  YouTube is an American social media and online video sharing platform owned by Google. YouTube was founded on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim who were three former employees of PayPal. Headquartered in San Bruno, California, it is the second-most-visited website in the world, after Google Search. In January 2024, YouTube had more than 2.7 billion monthly active users, who collectively watched more than one billion hours of videos every day. As of May 2019, videos were being uploaded to the platform at a rate of more than 500 hours of content per minute, and as of mid-2024, there were approximately 14.8 billion videos in total. (Full article...)
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  Musk in 2022

  
  Elon Reeve Musk (/ˈiːlɒn/ EE-lon; born June 28, 1971) is a businessman known for his leadership of Tesla, SpaceX, X (formerly Twitter), and the Department of Government Efficiency (DOGE). Musk has been considered the wealthiest person in the world since 2021; as of May 2025, Forbes estimates his net worth to be US$424.7 billion. (Full article...)
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  Facebook is a social media and social networking service owned by the American technology conglomerate Meta. Created in 2004 by Mark Zuckerberg with four other Harvard College students and roommates, Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes, its name derives 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. (Full article...)
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  WhatsApp (officially WhatsApp Messenger) is an American social media, instant messaging (IM), and voice-over-IP (VoIP) service owned by technology conglomerate Meta. It allows users to send text, voice messages and video messages, make voice and video calls, and share images, documents, user locations, and other content. WhatsApp's client application runs on mobile devices, and can be accessed from computers. The service requires a cellular mobile telephone number to sign up. WhatsApp was launched in February 2009. In January 2018, WhatsApp released a standalone business app called WhatsApp Business which can communicate with the standard WhatsApp client. (Full article...)
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  The Google logo used since 2015

  
  Google LLC (/ˈɡuːɡəl/ ^ⓘ, GOO-gəl) is an American multinational corporation and technology company focusing on online advertising, search engine technology, cloud computing, computer software, quantum computing, e-commerce, consumer electronics, and artificial intelligence (AI). It has been referred to as "the most powerful company in the world" by the BBC and is one of the world's most valuable brands. Alongside Amazon, Apple, Meta, and Microsoft, Google's parent company, Alphabet Inc. is one of the five Big Tech companies. (Full article...)
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  Artificial intelligence (AI) is the capability of computational systems to perform tasks typically associated with human intelligence, such as learning, reasoning, problem-solving, perception, and decision-making. It is a field of research in computer science that develops and studies methods and software that enable machines to perceive their environment and use learning and intelligence to take actions that maximize their chances of achieving defined goals. (Full article...)
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  Aerial view of Apple Park, the company's headquarters, in Cupertino, California

  
  Apple Inc. is an American multinational corporation and technology company headquartered in Cupertino, California, in Silicon Valley. It is best known for its consumer electronics, software, and services. Founded in 1976 as Apple Computer Company by Steve Jobs, Steve Wozniak and Ronald Wayne, the company was incorporated by Jobs and Wozniak as Apple Computer, Inc. the following year. It was renamed Apple Inc. in 2007 as the company had expanded its focus from computers to consumer electronics. Apple is the largest technology company by revenue, with US$391.04 billion in the 2024 fiscal year. (Full article...)
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  Logo used since 2014.

  
  Netflix is an American subscription video on-demand over-the-top streaming service. The service primarily distributes original and acquired films and television shows from various genres, and it is available internationally in multiple languages. (Full article...)
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  OpenAI, Inc. is an American artificial intelligence (AI) organization founded in December 2015 and headquartered in San Francisco, California. It aims to develop "safe and beneficial" artificial general intelligence (AGI), which it defines as "highly autonomous systems that outperform humans at most economically valuable work". As a leading organization in the ongoing AI boom, OpenAI is known for the GPT family of large language models, the DALL-E series of text-to-image models, and a text-to-video model named Sora. Its release of ChatGPT in November 2022 has been credited with catalyzing widespread interest in generative AI. (Full article...)

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