42,772 articles
E-values
An e-value is a nonnegative measure of statistical evidence against a null hypothesis, central to anytime-valid inference where researchers may stop or continue studies at will.
E–Z notation
E–Z notation, also called the Entgegen-Zusammen system, is the IUPAC method for specifying double-bond configuration: Z (zusammen, together) or E (entgegen, opposite), assigned by CIP priority rules.
E. Bruce Watson
E. Bruce Watson is an American experimental geochemist and Institute Professor Emeritus at Rensselaer Polytechnic Institute, known for the Ti-in-zircon thermometer and studies of element diffusion in the Earth's crust and mantle.
E. C. George Sudarshan
E. C. George Sudarshan (Ennackal Chandy George Sudarshan, 1931–2018) was an Indian-American theoretical physicist who made foundational contributions to weak interactions, quantum optics, and the quantum Zeno effect.
E. J. Putzer
E. J. Putzer (Eugene James Putzer, 1929–2006) was an American mathematician and physicist whose 1966 paper introduced the Putzer algorithm, an eigenvalue-based formula for the matrix exponential still taught today.
E. M. Purcell
E. M. Purcell, or Edward Mills Purcell, was an American Harvard physicist who co-discovered nuclear magnetic resonance and shared the 1952 Nobel Prize in Physics.
E. Norval Fortson
E. Norval Fortson, born 1936 in Atlanta, Georgia, is an American atomic physicist at the University of Washington known for precision measurements with lasers and atoms.
E. P. J. van den Heuvel
E. P. J. van den Heuvel, born 1940, is a Dutch astronomer known for his work on the formation and evolution of neutron stars and black holes in binary systems.
E. T. Whittaker
E. T. Whittaker, fully Sir Edmund Taylor Whittaker, was a British mathematician who held the University of Edinburgh mathematics chair for thirty-four years and co-authored A Course of Modern Analysis.
E. Virginia Armbrust
E. Virginia Armbrust, known informally as Ginger Armbrust, is a biological oceanographer who studies marine diatoms; she is the Karl M. Banse Endowed Professor at the University of Washington.
E×B drift
The E×B drift is the steady cross-field motion of charged particles in perpendicular electric and magnetic fields, with velocity E×B/B², the same for ions and electrons.
E1821+643
E1821+643, also cataloged as H1821+643, is a luminous radio-quiet quasar about 3.4 billion light-years away in Draco, hosted by a giant elliptical galaxy at the center of a rich cluster.
E3SM
E3SM (Energy Exascale Earth System Model) is a coupled Earth system model developed by the U.S. Department of Energy to simulate atmosphere, ocean, land, sea ice, rivers, and land ice.
E7 (mathematics)
E7 is an exceptional simple Lie group and Lie algebra, one of five exceptional algebras, of dimension 133 and rank 7, distinguished by a 56-dimensional fundamental representation.
E8 (mathematics)
E8 (Lie group E8, E8 Lie algebra) is the largest of the five exceptional simple Lie algebras, a 248-dimensional structure of continuous symmetry with 240 roots.
E8 lattice
The E8 lattice, also called the Gosset lattice, is the unique even, unimodular lattice in 8 dimensions, generated by the 240 roots of the E8 root system.
E91 protocol
The E91 protocol is a quantum key distribution scheme proposed by Artur Ekert in 1991, in which two parties share a secret key from entangled particles and use Bell's inequality to test for eavesdropping.
Eady model
The Eady model is an idealized analytical model of baroclinic instability, introduced by Eric Eady in 1949, which with Charney's 1947 model founded the study of extratropical circulation.
Eagle Ford Shale
The Eagle Ford Shale is a Late Cretaceous hydrocarbon-bearing formation in South Texas, developed since 2008 as one of the largest US tight-oil and shale-gas plays.
Eagle Nebula
The Eagle Nebula, also known as Messier 16, is a star-forming nebula in Serpens, famous for the Pillars of Creation imaged by Hubble in 1995.
Earendel
Earendel, designated WHL0137-LS, is a gravitationally lensed light source identified in 2022 as the most distant single-star candidate ever observed, with light that traveled 12.9 billion years.
Earl E. Gossard
Earl E. Gossard was an American research meteorologist at NOAA in Boulder, Colorado, known for work on atmospheric gravity waves and clear-air Doppler radar wind profiling.
Earl Muetterties
Earl Muetterties (1927–1984) was an American inorganic chemist, a professor at the University of California, Berkeley, known for boron hydrides, fluxional molecules, and metal clusters as catalysis models.
Early dark energy
Early dark energy (EDE) is a proposed dark-energy component that briefly became significant in the early universe before diluting away, proposed to resolve the Hubble tension.
Early Warnings for All
Early Warnings for All is a United Nations initiative, launched by Secretary-General António Guterres in 2022, aiming to cover every person with early warning systems by 2027.
Early-type galaxy
An early-type galaxy (ETG) is an elliptical or lenticular galaxy with smooth, featureless morphology and mostly old stars, a name dating to Edwin Hubble's 1926 classification that once implied an evolutionary stage.
Earnshaw's theorem
Earnshaw's theorem of electrostatics states that charges or magnets governed by inverse-square force laws cannot be held in stable static equilibrium by those forces alone.
Earth
Earth is the third planet from the Sun and the largest of the four terrestrial planets, a 4.54-billion-year-old rocky world with one moon, large surface oceans, and the only known life.
Earth analog
An Earth analog, also called Earth 2.0, is a planet or moon with conditions similar to Earth's, sought as a possible home for liquid water and life.
Earth and Planetary Science Letters
Earth and Planetary Science Letters, also known as EPSL, is a peer-reviewed Elsevier journal founded in 1966 that publishes short, high-impact articles on Earth and planetary sciences.