42,772 articles
Joel N. Bregman
Joel N. Bregman is an astronomer, the H.D. Curtis Professor at the University of Michigan, whose research on hot X-ray-emitting galaxy halos seeks the universe's missing baryons.
Joel N. Ullom
Joel Nathan Ullom is an American physicist at NIST in Boulder, Colorado, who develops superconducting sensors and has been Acting Chief of the Quantum Sensors Division since 2023.
Joel R. Primack
Joel R. Primack (1945–2025) was an American theoretical physicist and astrophysicist at UC Santa Cruz, a principal originator of the cold dark matter theory of galaxy formation.
Joel S. Miller
Joel S. Miller is an American chemist known for molecule-based magnets and Emeritus Distinguished Professor of Chemistry at the University of Utah who reported an organic magnet ordering at room temperature in 1991.
Joel Schneider
Joel P. Schneider is an American chemist at the National Cancer Institute in Frederick, Maryland, known for self-assembling beta-hairpin peptide hydrogels that deliver drugs and cells.
Joel Spencer
Joel Spencer, born 1946, is an American mathematician and Silver Professor Emeritus at NYU's Courant Institute, coauthor of The Probabilistic Method and a direct collaborator of Paul Erdős.
Joel Stebbins
Joel Stebbins (1878–1966) was an American astronomer who pioneered photoelectric photometry, measuring starlight with electrical cells, directed Washburn Observatory from 1922 to 1948, and was elected to the National Academy of Sciences in 1922.
Joel W. Ager
Joel W. Ager is a materials chemist at Lawrence Berkeley National Laboratory and adjunct professor at UC Berkeley, known for research on electrocatalysis and CO2 reduction on copper catalysts.
Joerg Lahann
Joerg Lahann is a chemist and biomedical engineer at the University of Michigan, known for reactive polymer coatings by chemical vapor deposition, switchable surfaces, and founding its Biointerfaces Institute.
Joeri Rogelj
Joeri Rogelj is a Belgian climate scientist, professor at Imperial College London and IPCC lead author whose carbon budget research shaped the Paris Agreement's 1.5 °C warming limit.
Jōgan
Jōgan (貞観) was a Japanese era name of the early Heian period, from 859 to 877 under Emperor Seiwa; it names the Jōgan period in art history.
Jōgan earthquake
The Jōgan earthquake (貞観地震) was a great earthquake and tsunami that struck Mutsu Province in northern Japan on 9 July 869, drowning roughly 1,000 people on the Sendai plain.
Jōgan eruption of Mount Fuji
The Jōgan eruption (貞観噴火) of Mount Fuji was a fissure eruption on the volcano's northwest flank from 864 into 866, producing the large Aokigahara lava flows.
Jogendra Chandra Bardhan
Jogendra Chandra Bardhan (1896–1964) was an Indian organic chemist at the University of Calcutta, co-creator of the Bardhan–Sengupta phenanthrene synthesis, a standard named reaction first published in 1932.
Jogesh Pati
Jogesh Pati is a theoretical physicist who, with Abdus Salam, proposed in 1973 that quarks and leptons are unified, the Pati–Salam model of grand unification.
Johan A. Martens
Johan A. Martens is a Belgian chemist at KU Leuven known for work on zeolites and nanoporous materials in catalysis, adsorption, and molecular separation, and founder of five spin-off companies.
Johan Åkerman
Johan Åkerman is a Swedish experimental physicist and University of Gothenburg professor known for spintronics work on spin Hall nano-oscillators and magnetic droplet solitons, and founder of NanOsc Instruments.
Johan Arvid Hedvall
Johan Arvid Hedvall (1888–1974) was a Swedish chemist at Chalmers who showed that solids react below their melting points, giving his name to the Hedvall effect.
Johan Christensen
Johan Christensen is a Danish-trained wave physicist working on acoustic and mechanical metamaterials, leading a research group at the IMDEA Materials Institute in Madrid since 2022.
Johan Frederik Steffensen
Johan Frederik Steffensen (1873–1961) was a Danish mathematician and actuary who began as a jurist and became professor of actuarial mathematics at Copenhagen, known for Steffensen's method and inequality.
Johan Herman Lie Vogt
Johan Herman Lie Vogt (1858–1932) was a Norwegian geologist and metallurgist who applied physical chemistry to magmatic melts and helped establish the magmatic-segregation hypothesis for nickel-copper sulfide ores.
Johan Jacob Seidel
Johan Jacob Seidel (1919–2001) was a Dutch mathematician who founded the mathematics department of TU Eindhoven and was known for Seidel matrices, switching, and strongly regular graphs.
Johan Jensen (Danish mathematician)
Johan Jensen (1859–1925) was a Danish telephone engineer and self-taught mathematician, chief engineer of the Copenhagen Telephone Company, remembered for Jensen's inequality and Jensen's formula in complex analysis.
Johan Pieter Wibaut
Johan Pieter Wibaut (1886–1967) was a Dutch organic chemist, professor of organic chemistry at the University of Amsterdam from 1925 to 1956 and wartime rector magnificus.
Johan Rockström
Johan Rockström is a Swedish scientist best known as lead author of the planetary boundaries framework and director of the Potsdam Institute for Climate Impact Research.
Johann Bernoulli
Johann Bernoulli, also known as Jean Bernoulli, was a Swiss mathematician who helped master Leibniz's calculus, posed the brachistochrone problem in 1696, and taught Euler.
Johann Georg Hagen
Johann Georg Hagen was an Austrian-born Jesuit priest and astronomer who directed the Georgetown University Observatory from 1888 and the Vatican Observatory in Rome from 1906 until his death in 1930.
Johann Heinrich Louis Krüger
Johann Heinrich Louis Krüger (1857–1923) was a German geodesist and mathematician whose 1912 monograph turned Gauss's ellipsoidal mapping into the practical Gauss–Krüger projection, the basis of UTM.
Johann Nikuradse
Johann Nikuradse was a fluid dynamicist who took his doctorate under Ludwig Prandtl at Göttingen in 1923; his 1932–1933 pipe-friction experiments became the classical dataset of rough-wall turbulence.
Johann Radon
Johann Radon (1887–1956) was an Austrian mathematician known for the Radon transform, which underlies computed tomography, and the Radon–Nikodym theorem, a cornerstone of measure theory and probability.