42,772 articles
March equinox
The March equinox, also called the northward or vernal equinox, is the moment the Sun crosses Earth's equator moving north, around March 19 to 21, starting northern spring.
Marching cubes
Marching cubes is an algorithm that extracts an isosurface as a triangle mesh from a 3D scalar field, presented by Lorensen and Cline at SIGGRAPH 1987.
Marcia J. Rieke
Marcia J. Rieke, born 1951, is an American infrared astronomer at the University of Arizona's Steward Observatory and principal investigator of the James Webb Space Telescope's NIRCam camera.
Marcia McNutt
Marcia McNutt is an American geophysicist and the first woman to direct the U.S. Geological Survey and to serve as president of the National Academy of Sciences.
Marcin Poczobutt-Odlanicki
Marcin Poczobutt-Odlanicki (Martynas Počobutas-Odlianickis, 1728–1810) was a Jesuit astronomer who directed the Vilnius University Observatory from 1764 to 1807, served as rector of Vilnius University from 1780 to 1799, and created the constellation Taurus Poniatovii.
Marcin Stępień
Marcin Stępień, born 1977 in Wrocław, is a Polish organic chemist and professor at the University of Wrocław known for curved aromatic molecules and heterocyclic nanographenes.
Marco Polini
Marco Polini is an Italian condensed matter physicist known for work on graphene, electron hydrodynamics, and quantum batteries, and a professor at the University of Pisa.
Marco Tavani
Marco Tavani is an Italian astrophysicist at INAF-IAPS in Rome, Principal Investigator of the AGILE gamma-ray satellite and President of INAF from 2020 to 2024.
Marcos Rigol
Marcos Rigol is a theoretical physicist and Distinguished Professor of Physics at Pennsylvania State University, known for a 2008 Nature paper showing how isolated quantum systems thermalize.
Marcus du Sautoy
Marcus du Sautoy is a British mathematician at Oxford, Simonyi Professor for the Public Understanding of Science since 2008, known for research on zeta functions of groups and for books like The Music of the Primes.
Marcus Müller
Marcus Müller is a German theoretical physicist, professor at the University of Göttingen since 2008, known for simulations and self-consistent field theory of polymer and membrane systems.
Marcus theory
Marcus theory, also known as Marcus-Hush theory, is a physical chemistry theory giving the rates of electron transfer reactions in solution, proposed by Rudolph A. Marcus in 1956.
Marcus Weck
Marcus Weck, born in Berlin in 1968, is a German-born polymer chemist and Professor of Chemistry at New York University whose group studies supramolecular polymers, colloidal assembly, and catalysis.
Marfa lights
The Marfa lights, also called the Marfa Mystery Lights, are glowing lights seen on clear nights near Marfa, West Texas, reported for over a century.
Margaret A. Tolbert
Margaret A. Tolbert is an American atmospheric chemist at the University of Colorado Boulder known for explaining how polar stratospheric clouds activate chlorine in the Antarctic ozone hole.
Margaret Brimble
Margaret Brimble is a New Zealand synthetic medicinal chemist and Distinguished Professor at the University of Auckland, known for the Rett syndrome drug trofinetide, approved in 2023.
Margaret Burbidge
Margaret Burbidge, née Peachey (1919–2020), was a British-American observational astronomer at UC San Diego, known for the 1957 B²FH paper on stellar element synthesis and pioneering quasar spectroscopy.
Margaret Geller
Margaret Geller is an American astrophysicist at the Smithsonian Astrophysical Observatory in Cambridge, Massachusetts, known for mapping the cosmic web and discovering the Great Wall of galaxies.
Margaret H. Wright
Margaret H. Wright is an American mathematician and computer scientist known for numerical optimization, including the barrier trajectory method, and for serving as SIAM's first woman President.
Margaret Kivelson
Margaret Kivelson (born 1928) is an American space physicist at UCLA who used spacecraft magnetometers to discover Ganymede's magnetic field and hidden oceans on Jupiter's moons.
Margaret Melhase
Margaret Melhase, later Margaret Melhase Fuchs, was an American nuclear chemist who discovered cesium-137 in 1941 as a 20-year-old UC Berkeley undergraduate under Glenn Seaborg; wartime secrecy kept her credit unknown until 1994.
Margaret Murnane
Margaret M. Murnane is an Irish-born optical physicist and professor at the University of Colorado Boulder and JILA, known for tabletop X-ray sources from ultrafast lasers and the 2022 Isaac Newton Medal.
Margin of error
The margin of error is the half-width of a confidence interval, reported in polls as a plus-or-minus range; it covers only sampling error and shrinks as sample size grows.
Marginal distribution
A marginal distribution, also called a marginal probability distribution, is the distribution of a subset of random variables, obtained by summing or integrating a joint distribution over the other variables.
Marginal ice zone
The marginal ice zone (MIZ) is the dynamic interface between open ocean and sea ice, where waves break the cover into small floes and strongly influence atmosphere–ocean heat fluxes.
Marginal model
A marginal model is a semiparametric regression model for clustered or longitudinal data that describes the population-averaged mean of a response, typically fitted by generalized estimating equations introduced by Liang and Zeger in 1986.
Marginal structural model
A marginal structural model is a causal model, introduced by Robins, Hernán, and Brumback in 2000, that estimates the causal effect of time-varying exposures from observational data.
Marguerite Perey
Marguerite Catherine Perey (1909–1975) was a French radiochemist who discovered francium, element 87, in 1939, and remains the only woman to have discovered a chemical element as sole author.
Maria Flytzani-Stephanopoulos
Maria Flytzani-Stephanopoulos was a Greek-born chemical engineer and Tufts University professor who pioneered single-atom metal catalysis and was elected to the National Academy of Engineering in 2014.
Maria Gaetana Agnesi
Maria Gaetana Agnesi (1718–1799) was an Italian mathematician of Milan whose 1748 calculus textbook Instituzioni analitiche was acclaimed across Europe; the witch of Agnesi curve bears her name.