42,772 articles
Julius Wess
Julius Erich Wess (1934–2007) was an Austrian theoretical physicist who, with Bruno Zumino, constructed the first renormalizable supersymmetric quantum field theory in four spacetime dimensions in 1974.
Julius Wolff (Dutch mathematician)
Julius Wolff was a Dutch mathematician and professor at Groningen and Utrecht, known for the Denjoy–Wolff theorem; dismissed in 1940, he died in Bergen-Belsen in 1945.
Juliusz Schauder
Juliusz Schauder, also known as Juliusz Paweł Schauder, was a Polish mathematician of the Lwów school, born in 1899 in Lemberg, known for the Schauder fixed point theorem.
Julong Copper Mine
The Julong Copper Mine is a large open-pit copper-molybdenum mine in Maizhokunggar County near Lhasa, Tibet, holding China's largest copper resources at 25.88 million tonnes.
July 2018 lunar eclipse
The July 2018 lunar eclipse was a total lunar eclipse on 27–28 July 2018, the longest total lunar eclipse of the 21st century at 1 hour 43 minutes.
July 2025 Central Texas floods
The July 2025 Central Texas floods, also called the Kerr County floods, killed at least 135 people along the Guadalupe River on July 4, 2025.
Jump diffusion
Jump diffusion is a class of stochastic process, also called jump-diffusion models, that combines smooth diffusion with sudden jumps, best known through Merton's 1976 option pricing model.
Jump operator
The jump operator (Turing jump) maps a set of natural numbers to its jump, the halting problem for machines with an oracle for that set, always strictly harder.
Jump resonance
Jump resonance is a nonlinear vibration phenomenon in which a driven oscillator's amplitude jumps abruptly at a critical frequency, producing hysteresis between upward and downward frequency sweeps.
Jun Kondō
Jun Kondō (近藤淳) was a Japanese condensed matter physicist who explained the resistance minimum of dilute magnetic alloys, a result known worldwide as the Kondo effect, and died in 2022 aged 92.
Jun Korenaga
Jun Korenaga is a geophysicist and professor of Earth and planetary sciences at Yale University, known for work on plate tectonics, mantle convection, and Earth's thermal history.
Jun Okuda
Jun Okuda (奥田 潤爾), born 1957 in Osaka, is a Japanese organometallic chemist who held the Chair of Organometallic Chemistry at RWTH Aachen University from 2003.
Jun S. Liu
Jun S. Liu (刘军) is a statistician known for foundational work on Markov chain Monte Carlo methods and statistical genomics, and a professor at Tsinghua and Harvard.
Jun Ye
Jun Ye (叶军) is a physicist at JILA and NIST known for record-setting strontium optical lattice clocks and frequency-comb spectroscopy, honored with the 2022 Breakthrough Prize in Fundamental Physics.
Jun-Ichi Igusa
Jun-Ichi Igusa (井口潤一) was a Japanese-American mathematician at Johns Hopkins University who founded the theory of local zeta functions and Siegel modular forms of genus two.
Jun-ichi Yoshida
Jun-ichi Yoshida (吉田潤一; 1952–2019) was a Japanese synthetic organic chemist and professor at Kyoto University known for the cation pool method, electroorganic synthesis, and flash chemistry in flow microreactors.
Jun-iti Nagata
Jun-iti Nagata (1925–2007) was a Japanese mathematician born in Osaka, known for the Nagata–Smirnov metrization theorem, counterexamples that settled Hilbert's fourteenth problem negatively, and Nagata's compactification theorem in algebraic geometry.
Juna Kollmeier
Juna Kollmeier is an astrophysicist at the Carnegie Observatories who directs the Sloan Digital Sky Survey V and studies supermassive black holes and the intergalactic medium.
Junction conditions in general relativity
Junction conditions in general relativity are the rules for joining two solutions of Einstein's equations across a hypersurface, with the standard formalism given by Werner Israel in 1966.
Junction tree algorithm
The junction tree algorithm is an exact inference method for probabilistic graphical models that computes marginals by message passing on a tree of variable clusters, introduced by Lauritzen and Spiegelhalter in 1988.
June 2012 North American derecho
The June 2012 North American derecho was a severe thunderstorm complex that on June 29, 2012 swept 1,000 km from the Midwest to the Mid-Atlantic, killing 13.
June Gloom
June Gloom, also known as May Grey, is a Southern California weather pattern of cool, overcast skies in May and June, caused by ocean stratus clouds moving over the coast.
June Huh
June Huh (허준이, born 1983) is a Korean-American mathematician at Princeton University who won the 2022 Fields Medal for bringing Hodge theory to combinatorics and proving long-standing conjectures about matroids.
Jung‐Fu Lin
Jung-Fu Lin, known as Afu, is a Taiwanese-American geophysicist at the University of Texas at Austin who studies the mineral physics of the Earth's deep interior.
JUNGFRAU pixel detector
JUNGFRAU (adJUstiNg Gain detector FoR the Aramis User station) is a charge-integrating hybrid pixel X-ray detector developed at the Paul Scherrer Institute for SwissFEL, combining single-photon sensitivity with a wide dynamic range through gain switching.
Junggar Basin
Junggar Basin: large sedimentary basin in northern Xinjiang, NW China, between Tian Shan and Altai mountains; 13.6 × 10^4 km², China's second-largest basin, major petroleum province with a thick Late Carboniferous–Quaternary fill and deep-time climate records.
Junghans
Junghans, formally Junghans Uhren GmbH, is a German watch and clock manufacturer founded in 1861 in Schramberg in the Black Forest, known for its Bauhaus max bill designs.
Jungwon Park
Jungwon Park is a South Korean materials chemist and professor at Seoul National University known for 3D atomic imaging of individual nanocrystals in liquid and platinum cluster catalysts.
Junichiro Kono
Junichiro Kono is a physicist at Rice University in Houston, Texas, known for optical studies of condensed matter, carbon nanotube photonics, terahertz science, and cavity quantum electrodynamics.
Junsuk Rho
Junsuk Rho (노준석) is a South Korean nanophotonics researcher and endowed chair professor at POSTECH, working on metasurfaces, structural color, metalens-based AR displays, and LiDAR since 2014.