Portal:Ciencia

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Portal de la ciencia

Miembros de la Academia en 1667 con Luis XIV

La ciencia es una disciplina sistemática que construye y organiza el conocimiento en forma de hipótesis y predicciones comprobables sobre el mundo. La ciencia moderna suele dividirse en dos o tres ramas principales: las ciencias naturales (por ejemplo, física , química y biología ), que estudian el mundo físico ; y las ciencias del comportamiento (por ejemplo, economía , psicología y sociología ), que estudian a los individuos y las sociedades. Las ciencias formales (por ejemplo, lógica , matemáticas e informática teórica ), que estudian los sistemas formales regidos por axiomas y reglas, a veces también se describen como ciencias; sin embargo, a menudo se las considera un campo separado porque se basan en el razonamiento deductivo en lugar del método científico o la evidencia empírica como su metodología principal. Las ciencias aplicadas son disciplinas que utilizan el conocimiento científico con fines prácticos, como la ingeniería y la medicina . ( Artículo completo... )

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Aquí se muestran artículos destacados , que representan algunos de los mejores contenidos de Wikipedia en inglés.

Imagen 1
Betelgeuse es unaestrella supergigante roja de la constelación de Orión . Suele ser la décima estrella más brillante del cielo nocturno y, después de Rigel , la segunda más brillante de su constelación. Es una estrella variable semirregular de color rojizo, cuya magnitud aparente , que varía entre +0,0 y +1,6, tiene el rango más amplio mostrado por cualquier estrella de primera magnitud . Betelgeuse es la estrella más brillante del cielo nocturno en longitudes de onda del infrarrojo cercano . Su designación Bayer es α Orionis , latinizada como Alpha Orionis y abreviada Alpha Ori o α Ori . ( Artículo completo... )
Imagen 2

SARS-CoV-2 , miembro de la subfamilia Coronavirinae

Un virus es un agente infeccioso submicroscópico que se replica únicamente dentro de las células vivas de un organismo . Los virus infectan todas las formas de vida , desde animales y plantas hasta microorganismos , incluidas bacterias y arqueas . Los virus se encuentran en casi todos los ecosistemas de la Tierra y son el tipo de entidad biológica más numeroso. Desde el artículo de Dmitri Ivanovsky de 1892 que describe un patógeno no bacteriano que infecta las plantas de tabaco y el descubrimiento del virus del mosaico del tabaco por Martinus Beijerinck en 1898, se han descrito en detalle más de 11.000 de los millones de especies de virus . El estudio de los virus se conoce como virología , una subespecialidad de la microbiología . ( Artículo completo... )
Image 3

A field of iceberg lettuces in California

Lettuce (Lactuca sativa) is an annual plant of the family Asteraceae. It is most often grown as a leaf vegetable, but sometimes for its stem and seeds. Lettuce is most often used for salads, although it is also seen in other kinds of food, such as soups, sandwiches and wraps; it can also be grilled. One variety, celtuce (asparagus lettuce), is grown for its stems, which are eaten either raw or cooked. In addition to its main use as a leafy green, it has also gathered religious and medicinal significance over centuries of human consumption. Europe and North America originally dominated the market for lettuce, but by the late 20th century the consumption of lettuce had spread throughout the world. As of 2021^[update], world production of lettuce and chicory was 27 million tonnes, 53 percent of which came from China. (Full article...)
Image 4

Durrell's vontsira (Salanoia durrelli) is a small, reddish-brown, fox-like mammal native to the island of Madagascar. Discovered in 2004, it lives only in the biodiverse wetlands of Lake Alaotra. Durrell's vontsira belongs to the family Eupleridae, a group of meat-eating, cat- or fox-like mammals (of the order Carnivora) found only on Madagascar. The species is closely related to the brown-tailed mongoose (Salanoia concolor), with which it forms the genus Salanoia. The two are genetically similar, but morphologically distinct, and S. durrelli was described as a new species in 2010. (Full article...)
Image 5

Adult

The queen angelfish (Holacanthus ciliaris), also known as the blue angelfish, golden angelfish, or yellow angelfish, is a species of marine angelfish found in the western Atlantic Ocean. It is a benthic (ocean floor) warm-water species that lives in coral reefs. It is recognized by its blue and yellow coloration and a distinctive spot or "crown" on its forehead. This crown distinguishes it from the closely related and similar-looking Bermuda blue angelfish (Holacanthus bermudensis), with which it overlaps in range and can interbreed. (Full article...)
Image 6

Annotated satellite image of the chain

The Mono–Inyo Craters are a volcanic chain of craters, domes and lava flows in Mono County, Eastern California. The chain stretches 25 miles (40 km) from the northwest shore of Mono Lake to the south of Mammoth Mountain. The Mono Lake Volcanic Field forms the northernmost part of the chain and consists of two volcanic islands in the lake and one cinder cone volcano on its northwest shore. Most of the Mono Craters, which make up the bulk of the northern part of the Mono–Inyo chain, are phreatic (steam explosion) volcanoes that have since been either plugged or over-topped by rhyolite domes and lava flows. The Inyo volcanic chain form much of the southern part of the chain and consist of phreatic explosion pits, and rhyolitic lava flows and domes. The southernmost part of the chain consists of fumaroles and explosion pits on Mammoth Mountain and a set of cinder cones south of the mountain; the latter are called the Red Cones. (Full article...)
Image 7

At Skomer, Wales

The Atlantic puffin (Fratercula arctica), also known as the common puffin, is a species of seabird in the auk family. It is the only puffin native to the Atlantic Ocean; two related species, the tufted puffin and the horned puffin being found in the northeastern Pacific. The Atlantic puffin breeds in Russia, Iceland, Ireland, Britain, Norway, Greenland, Newfoundland and Labrador, Nova Scotia, and the Faroe Islands, and as far south as Maine in the west and France in the east. It is most commonly found in the Westman Islands, Iceland. Although it has a large population and a wide range, the species has declined rapidly, at least in parts of its range, resulting in it being rated as vulnerable by the IUCN. On land, it has the typical upright stance of an auk. At sea, it swims on the surface and feeds on zooplankton, small fish, and crabs, which it catches by diving underwater, using its wings for propulsion. (Full article...)
Image 8
Hurricane Florence, seen from the International Space Station, showing a well-defined eye at the center of the storm

The eye is a region of mostly calm weather at the center of a tropical cyclone. The eye of a storm is a roughly circular area, typically 30–65 kilometers (19–40 miles; 16–35 nautical miles) in diameter. It is surrounded by the eyewall, a ring of towering thunderstorms where the most severe weather and highest winds of the cyclone occur. The cyclone's lowest barometric pressure occurs in the eye and can be as much as 15 percent lower than the pressure outside the storm. (Full article...)
Image 9

Composite photo of the mounted holotype skeleton shortly before display in 1905

Cetiosauriscus (/ˌsiːtioʊˈsɔːrɪskəs/ SEE-tee-oh-SOR-iss-kəs) is a genus of sauropod dinosaur that lived between 166 and 164 million years ago during the Callovian (Middle Jurassic Period) in what is now England. A herbivore, Cetiosauriscus had – by sauropod standards – a moderately long tail, and longer forelimbs, making them as long as its hindlimbs. It has been estimated as about 15 m (49 ft) long and between 4 and 10 t (3.9 and 9.8 long tons; 4.4 and 11.0 short tons) in weight. (Full article...)
Image 10

Clockwise from top left: humpback whale, gray whale, North Atlantic right whale, and common minke whale

Baleen whales (/bəˈliːn/), also known as whalebone whales, are marine mammals of the parvorder Mysticeti in the infraorder Cetacea (whales, dolphins and porpoises), which use keratinaceous baleen plates (or "whalebone") in their mouths to sieve planktonic creatures from the water. Mysticeti comprises the families Balaenidae (right and bowhead whales), Balaenopteridae (rorquals), Eschrichtiidae (the gray whale) and Cetotheriidae (the pygmy right whale). There are currently 16 species of baleen whales. While cetaceans were historically thought to have descended from mesonychians, molecular evidence instead supports them as a clade of even-toed ungulates (Artiodactyla). Baleen whales split from toothed whales (Odontoceti) around 34 million years ago. (Full article...)
Image 11

Trinity was the code name of the first detonation of a nuclear weapon, conducted by the United States Army at 5:29 a.m. MWT (11:29:21 GMT) on July 16, 1945, as part of the Manhattan Project. The test was of an implosion-design plutonium bomb, nicknamed the "gadget", of the same design as the Fat Man bomb later detonated over Nagasaki, Japan, on August 9, 1945. Concerns about whether the complex Fat Man design would work led to a decision to conduct the first nuclear test. The code name "Trinity" was assigned by J. Robert Oppenheimer, the director of the Los Alamos Laboratory, possibly inspired by the poetry of John Donne. (Full article...)
Image 12
The Somerset Levels, seen from Glastonbury Tor

The Somerset Levels are a coastal plain and wetland area of Somerset, England, running south from the Mendips to the Blackdown Hills. (Full article...)
Image 13
Tertiary structure of a mouse major urinary protein. The protein has eight beta sheets (yellow) arranged in a beta barrel open at one end, with alpha helices (red) at both the amino- and carboxyl termini. The structure is resolved from Protein Data Bank entry 1i04.
Find all instances of this protein in the PDB

Major urinary proteins (Mups), also known as α₂u-globulins, are a subfamily of proteins found in abundance in the urine and other secretions of many animals. Mups provide a small range of identifying information about the donor animal, when detected by the vomeronasal organ of the receiving animal. They belong to a larger family of proteins known as lipocalins. Mups are encoded by a cluster of genes, located adjacent to each other on a single stretch of DNA, that varies greatly in number between species: from at least 21 functional genes in mice to none in humans. Mup proteins form a characteristic glove shape, encompassing a ligand-binding pocket that accommodates specific small organic chemicals. (Full article...)
Image 14

Oliphant in 1939

Sir Marcus Laurence Elwin Oliphant, AC, KBE, FRS, FAA, FTSE (8 October 1901 – 14 July 2000) was an Australian physicist and humanitarian who played an important role in the first experimental demonstration of nuclear fusion and in the development of nuclear weapons. (Full article...)
Image 15

Franklin in 2006 during the launch of The Ursula Franklin Reader at Massey College in Toronto

Ursula Martius Franklin CC OOnt FRSC (16 September 1921 – 22 July 2016) was a Canadian metallurgist, research physicist, author, and educator who taught at the University of Toronto for more than 40 years. Franklin is best known for her writings on the political and social effects of technology. She was the author of The Real World of Technology, which is based on her 1989 Massey Lectures; The Ursula Franklin Reader: Pacifism as a Map, a collection of her papers, interviews, and talks; and Ursula Franklin Speaks: Thoughts and Afterthoughts, containing 22 of her speeches and five interviews between 1986 and 2012. Franklin was a practising Quaker and actively worked on behalf of pacifist and feminist causes. She wrote and spoke extensively about the futility of war and the connection between peace and social justice. Franklin received numerous honours and awards, including the Governor General's Award in Commemoration of the Persons Case for promoting the equality of girls and women in Canada and the Pearson Medal of Peace for her work in advancing human rights. In 2012, she was inducted into the Canadian Science and Engineering Hall of Fame. A Toronto high school, Ursula Franklin Academy, as well as Ursula Franklin Street on the University of Toronto campus, have been named in her honor. (Full article...)

Imágenes destacadas

Imágenes destacadas sobre Ciencia.

Image 1Arqueólogos explorando la cueva de Santa Ana en la excavación (arqueología) , de Mario modesto (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 2Energía de activación , por Debivort (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 3Diploma del Premio Nobel de Física , de Sofia Gisberg (restaurado por Jebulon ) (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 4Catodoluminiscencia en color de un diamante , por Pavel Somov (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 5Impacto de una gota sobre la superficie de un líquido , por José Manuel Suárez (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 6Cadena oxidada , de WikipedianMarlith (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 7Los Andes peruanos en la expedición exploratoria de Estados Unidos , por Alfred Thomas Agate (editado por Durova ) (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 8Prisma dicroico , por rayos X (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 9Erupción de Coca-Cola Light y Mentos , por Mikemurphy (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 10Movimiento de proyectil de una pelota que rebota en una colisión inelástica , por MichaelMaggs (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 11Movimiento traslacional a temperatura termodinámica , por Greg L (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 12Reacción de la termita , por Nikthestunned (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 13Globo de plasma , de Colin (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
$Imagen 14 Refracción en gotas de lluvia, de Mila Zinkova (de Wikipedia: Imágenes destacadas/Ciencias/Otros)$
Image 14Refracción en gotas de lluvia , por Mila Zinkova (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 15Reflexión interna total , de Jean-Marc Kuffer (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 16Calle del vórtice Kármán , de Cesareo de La Rosa Siqueira (de Wikipedia:Fotos destacadas/Ciencias/Otros )
Image 17Zonas de vida de Holdridge , por Peter Halasz (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 18Dispersión de la luz , por LucasVB (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 19Rayas que calientan el ambiente , por Ed Hawkins (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 20Choque oblicuo , de la NASA / Fuerza Aérea de los Estados Unidos (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 21Operación Tumbler-Snapper , del Laboratorio Nacional Lawrence Livermore (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 22Dispositivo de ventaja mecánica , de Prolineserver (editado por Tomia , Ss181292 y Atropos235 ) (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 23Abundancia global de fotoautótrofos oceánicos y terrestres en producción primaria , por el Proyecto SeaWiFS (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 24Estudio de la NASA sobre los vórtices en las puntas de las alas durante la turbulencia de estela , realizado por el Centro de Investigación Langley (editado por Fir0002 ) (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 25Vibración de un haz de vidrio en la teoría de haces de Euler-Bernoulli , por Ben pcc (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 26Animación de una gota de agua , de Chris 73 y Gmaxwell (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 27Imanes toroidales del detector ATLAS , de Maximilien Brice, CERN (editado por Bammesk ) (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 28Reactor reproductor rápido , de Graevemoore (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 29Excavación arqueológica en la Sierra de Atapuerca , obra de Mario Modesto (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 30Demostración de impacto a hipervelocidad , por la NASA (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 31Parallax , de Mila Zinkova (editado por Richard Bartz ) (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 32Sección del Gran Colisionador de Hadrones , por Maximilien Brice (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 33Sincrotrón australiano , de John O'Neill (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 34Núcleo de hielo , del Proyecto de la capa de hielo de Groenlandia (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 35Transformación de Lorentz de la línea del universo , por Cyp (de Wikipedia:Imágenes destacadas/Ciencias/Otros )
Image 36Simulación de líquidos con diferentes viscosidades , por Synapticrelay (de Wikipedia:Imágenes destacadas/Ciencias/Otros )

Artículos vitales

Artículos vitales para entender la Ciencia.

El tiempo es la secuencia continua de existencia y acontecimientos que se produce en unasucesión aparentemente irreversible desde el pasado , pasando por el presente y hasta el futuro . Es una cantidad componente de diversas mediciones utilizadas para secuenciar acontecimientos, comparar la duración de los acontecimientos o los intervalos entre ellos y cuantificar las tasas de cambio de las cantidades en la realidad material o en la experiencia consciente . El tiempo se suele considerar una cuarta dimensión , junto con tres dimensiones espaciales . ( Artículo completo... )

Sabías...

¿Sabías esto sobre la Ciencia?

... que el género del espacio interior psicológico era una rebelión contra el enfoque tradicional de la ciencia ficción en el espacio exterior literal ?
... que la Cowbridge Girls School , construida en 1896, era inusual para su época al proporcionar un laboratorio de ciencias para las estudiantes?
... que la casa del siglo XIV Maison de Jeanne fue datada positivamente con la ciencia de la dendrocronología ?
... que La ciencia de Dune contiene un análisis científico de los conceptos ficticios de la franquicia Dune , como los gusanos de arena , los destiltrajes y la droga ficticia melange ?
... que el documental I Am Human ha sido el inicio de mesas redondas sobre neurociencia en universidades como Harvard ?
... que a Charles Leslie Richardson se le ordenó "poner la ciencia de moda en el ejército"?

Complicarse

Para obtener recursos para editores y colaborar con otros editores para mejorar los artículos de Wikipedia relacionados con la ciencia, visita WikiProject Science .

Noticias científicas

10 de octubre de 2024 –: En su informe anual Planeta Vivo , el Fondo Mundial para la Naturaleza estima que las poblaciones silvestres de especies animales han disminuido más del 70% desde 1970, y que en algunas áreas de gran biodiversidad se han registrado descensos de hasta el 95%. (DW)
10 de octubre de 2024 – Tumba de Cristóbal Colón: Investigadores de la Universidad de Granada confirman que los huesos que se encuentran en la Catedral de Sevilla , en Andalucía , España , pertenecían a Cristóbal Colón . (ABC España)
9 de octubre de 2024 – Premio Nobel de Química: El Premio Nobel de Química de este año se otorga conjuntamente al informático británico Demis Hassabis y al químico estadounidense John M. Jumper por su trabajo sobre la predicción de la estructura de las proteínas , y al bioquímico y biólogo computacional estadounidense David Baker por su trabajo sobre el diseño computacional de proteínas . (The New York Times) (Premio Nobel)
8 de octubre de 2024 – Premio Nobel de Física: El físico estadounidense John Hopfield y el informático británico-canadiense Geoffrey Hinton han sido galardonados con el Premio Nobel de Física de este año "por descubrimientos e invenciones fundamentales que permiten el aprendizaje automático con redes neuronales artificiales ". (The Guardian)
24 de septiembre de 2024 –: Científicos de la Universidad de Waterloo anuncian que han identificado positivamente los huesos encontrados en la isla Rey Guillermo en Nunavut , Canadá , como los de James Fitzjames , capitán del HMS Erebus durante la expedición perdida de Franklin . (CBC News)
23 de septiembre de 2024 – Deforestación de la selva amazónica: Los investigadores del clima informan que desde 1985, la deforestación en la Amazonia ha causado la pérdida de una superficie de selva tropical equivalente a la superficie de Francia y Alemania juntas . (France 24)

Portales relacionados

Los 10 artículos más populares del mes de WikiProject Science -cargar nuevo lote

Los siguientes artículos relacionados con la ciencia son los artículos más visitados de WikiProject Science . Consulte la lista completa en Wikipedia:WikiProject Science/Páginas populares .

Image 1

La canica azul , Apolo 17 , diciembre de 1972

La Tierra es el tercer planeta desde el Sol y el único objeto astronómico conocido que alberga vida . Esto es posible porque la Tierra es un mundo oceánico , el único en el Sistema Solar que sostiene agua líquida. Casi toda el agua de la Tierra está contenida en su océano global, que cubre el 70,8% de la corteza terrestre . El 29,2% restante de la corteza terrestre es tierra, la mayor parte de la cual se encuentra en forma de masas continentales dentro del hemisferio terrestre de la Tierra . La mayor parte de la tierra de la Tierra es algo húmeda y está cubierta de vegetación , mientras que grandes capas de hielo en los desiertos polares de la Tierra retienen más agua que el agua subterránea , los lagos, los ríos y el agua atmosférica de la Tierra juntos. La corteza terrestre está formada por placas tectónicas que se mueven lentamente , que interactúan para producir cadenas montañosas, volcanes y terremotos. La Tierra tiene un núcleo externo líquido que genera una magnetosfera capaz de desviar la mayor parte de los vientos solares destructivos y la radiación cósmica . ( Artículo completo... )
Image 2
Artificial 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 use learning and intelligence to take actions that maximize their chances of achieving defined goals. Such machines may be called AIs. (Full article...)
Image 3
A plot of normal distribution (or bell-shaped curve) where each band has a width of 1 standard deviation – See also: 68–95–99.7 rule.

In statistics, the standard deviation is a measure of the amount of variation of the values of a variable about its mean. A low standard deviation indicates that the values tend to be close to the mean (also called the expected value) of the set, while a high standard deviation indicates that the values are spread out over a wider range. The standard deviation is commonly used in the determination of what constitutes an outlier and what does not. (Full article...)
Image 4

File:Ejaculation educational seq 4.png
Example of an ejaculation

Ejaculation is the discharge of semen (the ejaculate; normally containing sperm) from the testicles through the penis and out the urethra. It is the final stage and natural objective of male sexual stimulation, and an essential component of natural conception. After forming an erection, many men emit pre-ejaculatory fluid during stimulation prior to ejaculating. Ejaculation involves involuntary contractions of the pelvic floor and is normally linked with orgasm. It is a normal part of male human sexual development. (Full article...)
Image 5
Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the world. Modern science is typically divided into two or three major branches: the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; and the behavioural sciences (e.g., economics, psychology, and sociology), which study individuals and societies. The formal sciences (e.g., logic, mathematics, and theoretical computer science), which study formal systems governed by axioms and rules, are sometimes described as being sciences as well; however, they are often regarded as a separate field because they rely on deductive reasoning instead of the scientific method or empirical evidence as their main methodology. Applied sciences are disciplines that use scientific knowledge for practical purposes, such as engineering and medicine. (Full article...)
Image 6
Sci-Hub is a shadow library website that provides free access to millions of research papers, regardless of copyright, by bypassing publishers' paywalls in various ways. Unlike Library Genesis, it does not provide access to books. Sci-Hub was founded in Kazakhstan by Alexandra Elbakyan in 2011, in response to the high cost of research papers behind paywalls (see Serials crisis). The site is extensively used worldwide. In September 2019, the site's operator(s) said that it served approximately 400,000 requests per day.
In addition to its intensive use, Sci-Hub stands out among other shadow libraries because of its easy use/reliability and because of the enormous size of its collection; a 2018 study estimated that Sci-Hub provided access to 95% of all scholarly publications with issued DOI numbers. On 15 July 2022, Sci-Hub reported that its collection comprised 88,343,822 files. Since December 2020, the site has paused uploads due to legal troubles. (Full article...)
Image 7

Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other scholarly literature, including court opinions and patents. (Full article...)
Image 8

The Massachusetts Institute of Technology (MIT) is a private research university in Cambridge, Massachusetts, United States. Founded in response to the increasing industrialization of the United States, MIT adopted a European polytechnic university model and stressed laboratory instruction in applied science and engineering. (Full article...)
Image 9
A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol. The prefix kilo-, for example, may be added to gram to indicate multiplication by one thousand: one kilogram is equal to one thousand grams. The prefix milli-, likewise, may be added to metre to indicate division by one thousand; one millimetre is equal to one thousandth of a metre. (Full article...)
Image 10
The scientific method is an empirical method for acquiring knowledge that has characterized the development of science since at least the 17th century. The scientific method involves careful observation coupled with rigorous scepticism, because cognitive assumptions can distort the interpretation of the observation. Scientific inquiry includes creating a hypothesis through inductive reasoning, testing it through experiments and statistical analysis, and adjusting or discarding the hypothesis based on the results. (Full article...)