42,772 articles
Edwin J. Vandenberg
Edwin J. Vandenberg (1918–2005) was an American industrial polymer chemist who spent 43 years at Hercules Powder Company, independently discovered isotactic polypropylene, and received the Priestley Medal in 2003.
Edwin James George Pitman
Edwin James George Pitman (1897–1993) was an Australian mathematician and statistician, professor at the University of Tasmania from 1926 to 1962, known for the Pitman estimator and efficiency.
Edwin Joseph Cohn
Edwin Joseph Cohn (1892–1953) was an American protein biochemist at Harvard Medical School whose cold ethanol fractionation supplied albumin and gamma globulin to the armed forces in World War II.
Edwin M. McMillan
Edwin M. McMillan, also known as Edwin Mattison McMillan, was an American physicist who co-discovered neptunium in 1940 and won half of the 1951 Nobel Prize in Chemistry.
Edwin Roedder
Edwin Woods Roedder (1919–2006) was an American geochemist at the U.S. Geological Survey who pioneered fluid inclusion research on ore deposits, winning the Roebling and Penrose medals.
Edwin Spanier
Edwin Henry Spanier (1921–1996) was an American algebraic topologist known for Spanier–Whitehead duality and his 1966 textbook Algebraic Topology, and a professor at Berkeley from 1959 to 1991.
Edwin T. Mertz
Edwin T. Mertz (1909–1999) was an American biochemist at Purdue University best known for co-discovering high-lysine maize, the opaque-2 corn rich in the essential amino acid lysine.
Edwin Thompson Jaynes
Edwin Thompson Jaynes (1922–1998) was an American physicist at Washington University in St. Louis whose 1957 maximum-entropy papers recast statistical mechanics as inference, and who co-created the Jaynes–Cummings model.
Edwin Vedējs
Edwin Vedejs (Edvīns Vedējs, 1941–2017) was a Latvian-born American organic chemist at Wisconsin and Michigan known for synthetic methodology, total synthesis, and Wittig reaction studies.
Edwin Wilkinson Miller
Edwin Wilkinson Miller was a mathematician who earned his doctorate at the University of Michigan in 1930 under Raymond Louis Wilder and published a 1937 paper on biconnected sets.
EdX
edX is a massive open online course provider and learning platform founded by Harvard University and MIT in 2012, offering university-backed courses and certificates, and owned since 2021 by 2U.
Edziza
Edziza (Mount Edziza volcanic complex) is a 2,786 m stratovolcano in northern British Columbia, Canada, active over 7.5 million years in five magmatic cycles, with a 2-km ice-filled caldera, over 30 young cinder cones, and a High Canadian threat ranking.
Eelco Rohling
Eelco J. Rohling is a Dutch paleoceanographer who reconstructs past sea level from Red Sea records, and professor of Ocean and Climate Change at Utrecht University.
EF Eri
EF Eridani, or EF Eri, is a short-period polar, a magnetic cataclysmic variable with an 81-minute period, identified in 1979, with a likely brown dwarf companion.
EF5 drought
The EF5 drought, also called the EF5 gap, was the period from 2013 to 2025 with no EF5-rated US tornadoes, the longest since records began in 1950.
Efavirenz
Efavirenz, sold as Sustiva and Stocrin, is an NNRTI drug used to treat HIV type 1 infection, the first of its class approved as preferred first-line therapy.
Effect of Hurricane Katrina on the Louisiana Superdome
During Hurricane Katrina in 2005, the Louisiana Superdome in New Orleans sheltered over 10,000 evacuees while its roof partially failed and its utilities broke down.
Effect size
Effect size is a quantitative measure of how large a difference or relationship in a study is, reported in original units or standardized forms such as Cohen's d.
Effective climate sensitivity
Effective climate sensitivity (EffCS) is the warming response to doubled CO2 evaluated for evolving non-equilibrium conditions, allowing estimation from observations or models without waiting for full equilibrium.
Effective descriptive set theory
Effective descriptive set theory is the lightface study of effective Borel, analytic, and co-analytic sets on recursive Polish spaces, merging classical descriptive set theory with Kleene's recursion theory.
Effective dose (pharmacology)
The effective dose in pharmacology is the amount of a drug that produces a defined therapeutic effect; the median effective dose (ED50) produces it in 50% of the population.
Effective dose (radiation)
Effective dose, also known as effective dose equivalent or effective radiation dose, is an ICRP radiation protection quantity expressing cancer risk from non-uniform body exposure as a tissue-weighted sum of organ doses, measured in sievents.
Effective field theory
An effective field theory (EFT) is a quantum field theory describing a system below a chosen energy scale, organizing suppressed corrections from higher-energy physics through power counting.
Effective field theory of gravity
The effective field theory of gravity treats general relativity as a low-energy quantum field theory, predicting finite quantum corrections like the corrected Newtonian potential below the Planck scale.
Effective field theory of large-scale structure
The effective field theory of large-scale structure (EFTofLSS) is a cosmological framework that predicts matter and galaxy clustering by treating dark matter as an effective fluid.
Effective mass (solid-state physics)
Effective mass, also called electron effective mass, is the mass an electron or hole appears to have moving through a crystal, defined by the curvature of its energy band.
Effective nuclear charge
Effective nuclear charge is the net positive charge an electron in a multi-electron atom experiences after shielding by the other electrons, written Zeff = Z − S.
Effective potential
The effective potential in general relativity is a function of the radial coordinate that reduces the Schwarzschild orbital motion of a test particle to a one-dimensional energy equation.
Effective radiative forcing
Effective radiative forcing (ERF) is the change in Earth's energy balance from a climate perturbation after rapid atmospheric adjustments, measured in watts per square meter.
Effective radius (cloud physics)
The effective radius in cloud physics is a characteristic droplet radius, defined as the ratio of the third to the second moment of the particle size distribution.