Portal:Technology
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Technology is the application of conceptual knowledge for achieving 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 prehistoric times, followed by the control of fire, which contributed to the growth of the human brain and the development of language during the Ice Age. 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...)
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Image 1Route 143 is a short state highway in southern Missouri. The route starts at Missouri Route 34 near Patterson, and it travels north through Sam A. Baker State Park. North of the park, Route 143 turns westwards and ends at Route 49 at Des Arc. The road that became part of Route 143 was constructed around 1934, as a supplemental route traveling east from Des Arc. Four years later, a new state route, Route 101, was constructed from Route 34 to the state park, and it was renumbered to Route 143 in 1941. By 1964, a new supplemental route connected the two routes. The two supplemental routes were merged into Route 143 around six years later. (Full article...)
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Image 2Interstate 640 (I-640) is an east–west auxiliary Interstate Highway in Knoxville, Tennessee. It serves as a bypass for I-40 around Downtown Knoxville and is also an alternative route for traffic passing between I-40 and I-75. All trucks carrying hazardous cargo through Knoxville are required to use I-640. It has a total length of 10.80 miles (17.38 km) and runs approximately three miles (4.8 km) north of downtown through the northern neighborhoods of Knoxville.
For its first 3 miles (4.8 km), I-640 has a concurrency with I-75, although exits along this segment are numbered according to the former's mileage. For the rest of its length, the Interstate maintains an unsigned concurrency with U.S. Route 25W (US 25W). Both of these highways were rerouted from their original alignments upon I-640's completion. (Full article...) -
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Matthew Boulton FRS (/ˈboʊltən/ ⓘ BOHL-tən; 3 September 1728 – 17 August 1809) was an English businessman, inventor, mechanical engineer, and silversmith. He was a business partner of the Scottish engineer James Watt. In the final quarter of the 18th century, the partnership installed hundreds of Boulton & Watt steam engines, which were a great advance on the state of the art, making possible the mechanisation of factories and mills. Boulton applied modern techniques to the minting of coins, striking millions of pieces for Britain and other countries, and supplying the Royal Mint with up-to-date equipment.
Born in Birmingham, he was the son of a Birmingham manufacturer of small metal products who died when Boulton was 31. By then Boulton had managed the business for several years, and thereafter expanded it considerably, consolidating operations at the Soho Manufactory, built by him near Birmingham. At Soho, he adopted the latest techniques, branching into silver plate, ormolu ("gilt bronze") and other decorative arts. He became associated with James Watt when Watt's business partner, John Roebuck, was unable to pay a debt to Boulton, who accepted Roebuck's share of Watt's patent as settlement. He then successfully lobbied Parliament to extend Watt's patent for an additional 17 years, enabling the firm to market Watt's steam engine. The firm installed hundreds of Boulton & Watt steam engines in Britain and abroad, initially in mines and then in factories. (Full article...) -
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El Laco is a volcanic complex in the Antofagasta Region of Chile. It is directly south of the Cordón de Puntas Negras volcanic chain. Part of the Central Volcanic Zone of the Andes, it is a group of seven stratovolcanoes and a caldera. It is about two million years old. The main summit of the volcano is a lava dome called Pico Laco, which is variously reported to be 5,325 metres (17,470 ft) or 5,472 metres (17,953 ft) high. The edifice has been affected by glaciation, and some reports indicate that it is still fumarolically active.
The volcano is known for its magnetite-containing lava flows of enigmatic origin. In total, there are four lava flows and two dykes, as well as a formation of uncertain nature. In addition to lava flow structures, pyroclastics containing iron oxide are also found within the complex. The magmas formed within a magma chamber with a volume of about 30 cubic kilometres (7.2 cu mi); whether the iron-rich lavas are native magnetite lavas or were formed by hydrothermal processes acting on regular rock is under debate. After their discovery in 1958, these iron deposits have been mined. Similar deposits of volcanic iron oxide exist in Australia, Chile, and Iran. (Full article...) -
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The Indian River Inlet Bridge (officially the Charles W. Cullen Bridge) is a cable-stayed bridge located in Sussex County, Delaware, in the United States. It carries four lanes of Delaware Route 1 (DE 1) over the Indian River Inlet between the Indian River Bay and the Atlantic Ocean. The bridge also carries Delaware Bicycle Route 1 (Bike Route 1) across the inlet. The bridge is within Delaware Seashore State Park between Dewey Beach and Bethany Beach. The Indian River Inlet Bridge is maintained by the Delaware Department of Transportation (DelDOT). The bridge is 2,600 feet (790 m) long and 107.66 feet (32.81 m) wide, with a span of 950 feet (290 m) and overhead clearance of 45 feet (14 m).
Prior to the current bridge, four other bridges have spanned the Indian River Inlet, opened in 1934, 1940, 1952, 1965, and 1976, the latter serving as a twin span to the 1965 one. All were known informally as the Indian River Inlet Bridge, and all but the first officially were named the Charles W. Cullen Bridge. The 1965 and 1976 bridges, of the steel girdertype, were subject to scouring from the inlet, leading to the need to replace them. Initial plans for a tied-arch bridge over the inlet in 2004 were over budget, and 2006 plans for a 1,400-foot (427-meter) cable-stayed bridge were cancelled because of early construction and legal problems. Construction of the current, 2,600-foot (792-meter) bridge began in 2008 as part of a design-build project, with Skanska awarded the contract to build the bridge. The current Indian River Inlet Bridge opened partially in January 2012 and completely in May 2012 at a cost of $150 million. (Full article...) -
Image 6The Homestead Extension of Florida's Turnpike (HEFT), designated as unsigned State Road 821 (SR 821), is the southern extension of Florida's Turnpike, a controlled-access toll road in the U.S. state of Florida maintained by Florida's Turnpike Enterprise (FTE). Spanning approximately 48 miles (77 km) along a north–south axis, it supplements the 265-mile (426 km) mainline (designated as SR 91) to form the complete 309-mile (497 km) turnpike. The extension begins at its southern terminus at U.S. Route 1 (US 1) in Florida City, and transitions into the SR 91 mainline in Miramar at its northern end. Despite their designations as different state roads, the mainline and the extension are continuous in their exit numbering.
It was opened in stages between 1973 and 1974, after the mainline of the Turnpike was completed, and is used by both commuters and travelers to the Florida Keys and Everglades National Park. Due to its alignment, it acts as a de facto outer beltway for Miami, with the Palmetto Expressway (State Road 826) forming an inner beltway. (Full article...) -
Image 7Maryland Route 363 (MD 363) is a state highway in the U.S. state of Maryland. Known for almost all of its length as Deal Island Road, the state highway runs 18.30 miles (29.45 km) from a dead end on Deal Island east to Mansion Avenue in Princess Anne. MD 363 connects Princess Anne and U.S. Route 13 (US 13) with the communities of Deal Island, Chance, and Dames Quarter on Tangier Sound in northwestern Somerset County. The state highway was constructed starting from Princess Anne around 1920, and reached Chance in the early 1930s. It was extended to Deal Island when a modern bridge to the island was constructed in 1940. MD 363 was extended to its present terminus on the island in the late 1950s. (Full article...)
Selected picture
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Image 1A 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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Image 2Diagram: 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-00000019-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)
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Image 3Photograph credit: Petar MiloševićA thermoplastic-sheathed cable consists of a toughened outer thermoplastic sheath of polyvinyl chloride, covering one or more individual annealed copper conductors. Each of the current-carrying conductors in the "core" is insulated by an individual thermoplastic sheath, coloured to indicate the purpose of the conductor concerned. The protective earth conductor may also be covered with insulation, although, in some countries, this conductor may be left as bare copper. The type of thermoplastic, the dimensions of the conductors and the colour of their individual insulation are specified by the regulatory bodies in the various countries concerned.
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Image 4Credit: 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.
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Image 5The 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.
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Image 6Photograph: Donald Y TongBurj Khalifa is a skyscraper in Dubai, United Arab Emirates, and currently the tallest man-made structure in the world, at 829.8 m (2,722 ft). It was designed to be the centerpiece of a large-scale, mixed-use development known as Downtown Dubai. Construction took over five years, and the skyscraper was officially opened in January 2010.
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Image 7Photograph: 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.
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Image 8Ruby 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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Image 9Photograph: Evan AmosThe Apple Bandai Pippin is a multimedia technology console designed by Apple Computer based on the Apple Pippin platform, and produced by Bandai. Only 100,000 of the consoles were produced between its 1996 release and 1997 discontinuation. The Bandai Pippin was intended to create an inexpensive computer aimed mostly at playing CD-based multimedia software, especially games, but also functioning as a thin client.
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Image 10Credit: Mike McGregorThe OLPC XO-1 is an inexpensive subnotebook laptop computer intended to be distributed to children in developing countries.
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Image 11Photo credit: Alfred T. Palmer"Big Pete" Ramagos, rigger at work on Douglas Dam, Tennessee, June 1942. A rigger is a person or company which specializes in the lifting and/or moving of extremely large and/or heavy objects. Riggers use equipment expressly designed for moving and lifting objects where ordinary material handling equipment cannot go.
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Image 12Image credit: Søren Peo PedersenTwo TRS connectors (also known as jack plugs or phone plugs), a common audio connector. They are cylindrical in shape, with two or more contacts. Originally invented for use in telephone switchboards, jack plugs are still widely used, both in the original ¼-inch (6.3 mm) size and in miniaturized versions. The top plug in this image is for stereo connections, while the bottom is for mono.
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Image 14Photo credit: Willi HeidelbachA composing stick and movable type, the system of printing and typography using pieces of metal type, made by casting from matrices struck by letterpunches. The text on the stick reads, "The quick brown fox jumps over the lazy dog and feels as if he were in the seventh heaven of typography together with Hermann Zapf, the most famous artist of the" [sic].
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Image 15Photograph credit: Langley Research Center; restored by Adam CuerdenMary 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. -
Image 16Photograph credit: Diego DelsoThe Walchensee Hydroelectric Power Station is a storage power station in Bavaria, Germany. The turbines, seen here, are fed by water from the Walchensee which is then released into the Kochelsee. The power station uses the hydraulic head of about 200 metres (660 ft) between the two natural lakes, and water from the Rißbach river is also used to augment the supply. The installed capacity is 124 MW with an annual production of 300 GWh; this is one of the largest of such power plants in Germany.
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Image 17Photo 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. -
Image 18An 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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Image 19Photograph credit: Matt Steiner and Kees08A 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. -
Image 20Photo: Benh Lieu SongThe Eiffel Tower as seen from the Champ de Mars. At 324 metres (1,063 ft) tall, the tower, an iron lattice tower, is the tallest building in Paris, the most-visited paid monument in the world, as well as one of the most recognizable structures in the world. Named after its designer, Gustave Eiffel, it was built as an entrance arch for the 1889 Exposition Universelle and has since become the most prominent symbol of both Paris and France.
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General images - load new batch
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Image 2Self-replicating 3D printer (from Emerging technologies)
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Image 3Eric M. C. Tigerstedt (1887–1925) was known as a pioneer of sound-on-film technology. Tigerstedt in 1915. (from Invention)
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Image 6The 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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Image 7Newcomen steam engine for pumping mines (from History of technology)
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Image 10'BUILD YOUR OWN TELEVISION RECEIVER.' Science and Invention magazine cover, November 1928 (from Invention)
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Image 12Alessandro Volta with the first electrical battery. Volta is recognized as an influential inventor. (from Invention)
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Image 13Edison electric light bulbs 1879–80 (from History of technology)
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Image 15Agriculture preceded writing in the history of technology. (from History of technology)
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Image 16A variety of stone tools (from History of technology)
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Image 17A 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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Image 18The preserved Rocket (from History of technology)
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Image 19Ford assembly line, 1913. The magneto assembly line was the first. (from History of technology)
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Image 20Walls at Sacsayhuaman (from History of technology)
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Image 21Top 30 AI patent applicants in 2016 (from Emerging technologies)
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Image 23Thomas Edison with his second phonograph, photographed by Levin Corbin Handy in Washington, April 1878 (from History of technology)
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Image 273D printer (from Emerging technologies)
Did you know (auto-generated) - load new batch
- ... that Peter Corby's electric trouser press used technology designed for Concorde?
- ... that when Chorus Systèmes SA was founded in 1986, French technology start-up companies were rare?
- ... that Pamela McCorduck, who chronicled the evolution of artificial intelligence, regretted not recognizing the technology's potential for misuse?
- ... that touch-screen technology, pay-at-the-pump, car phones, and Coca-Cola Cherry were shown at the 1982 World's Fair?
- ... that Suresh Jadhav led the development of the COVID-19 vaccine marketed as Covishield?
- ... 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 Research Policy is regarded as the leading journal in the field of innovation studies?
- ... that OPTi Inc. won a patent suit against Apple for unauthorized use of "predictive snooping" technology?
Top 10 WikiProject Technology popular articles of the month
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YouTube is an American online video sharing platform owned by Google. Accessible worldwide, YouTube launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim, three former employees of PayPal. Headquartered in San Bruno, California, United States, it is the second most visited website in the world, after Google Search. YouTube has more than 2.5 billion monthly users, who collectively watch more than one billion hours of videos every day. , videos were being uploaded to the platform at a rate of more than 500 hours of content per minute, and as of 2021, there were approximately 14 billion videos in total. (Full article...) -
Image 2Facebook 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. Since 2006, Facebook allows everyone to register from 13 years old, except in the case of a handful of nations, where the age limit is 14 years. , Facebook claimed almost 3 billion monthly active users. As of October 2023, Facebook ranked as the 3rd most visited website in the world, with 22.56% of its traffic coming from the United States. It was the most downloaded mobile app of the 2010s. (Full article...)
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ChatGPT is a chatbot and virtual assistant developed by OpenAI and launched on November 30, 2022. Based on large language models (LLMs), it enables users to refine and steer a conversation towards a desired length, format, style, level of detail, and language. Successive user prompts and replies are considered at each conversation stage as context. (Full article...) -
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WhatsApp (officially WhatsApp Messenger) is an 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. 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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X, commonly referred to by its former name Twitter, is a social networking service based in the United States. With over 500 million users, it is one of the world's largest social media websites and the fifth-most visited website in the world. Users can share short text messages, images, and videos in posts (formerly "tweets") and like or repost other users' content. X also includes direct messaging, video and audio calling, bookmarks, lists and communities, and Spaces, a social audio feature. Users can vote on context added by approved users using the Community Notes feature. (Full article...) -
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Elon Reeve Musk (/ˈiːlɒn/ EE-lon; born June 28, 1971) is a businessman and investor. He is the founder, chairman, CEO, and CTO of SpaceX; angel investor, CEO, product architect, and former chairman of Tesla, Inc.; owner, executive chairman, and CTO of X Corp.; founder of The Boring Company and xAI; co-founder of Neuralink and OpenAI; and president of the Musk Foundation. He is one of the wealthiest people in the world; , Forbes estimates his net worth to be US$196 billion. (Full article...) -
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Google LLC (/ˈɡuːɡəl/ ⓘ, GOO-ghəl) 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" and is one of the world's most valuable brands due to its market dominance, data collection, and technological advantages in the field of AI. Google's parent company, Alphabet Inc. is one of the five Big Tech companies, alongside Amazon, Apple, Meta, and Microsoft. (Full article...) -
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Benjamin Franklin FRS FRSA FRSE (January 17, 1706 [O.S. January 6, 1705] – April 17, 1790) was an American polymath: a leading writer, scientist, inventor, statesman, diplomat, printer, publisher, and political philosopher. Among the most influential intellectuals of his time, Franklin was one of the Founding Fathers of the United States; a drafter and signer of the Declaration of Independence; and the first postmaster general. (Full article...) -
Image 9Artificial intelligence (AI), in its broadest sense, is intelligence exhibited by machines, particularly computer systems. It is a field of research in computer science that develops and studies methods and software that enable machines to perceive their environment and uses learning and intelligence to take actions that maximize their chances of achieving defined goals. Such machines may be called AIs. (Full article...)
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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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- Police dismantle encampments and arrest dozens of students protesting at the Massachusetts Institute of Technology in Cambridge, Massachusetts, and the University of Pennsylvania in Philadelphia, Pennsylvania. (Reuters)
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