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Physical world and mathematics

42,772 articles

Jacques Friedel

Jacques Friedel (1921–2014) was a French theoretical physicist who worked on the electron theory of metals and alloys, known for Friedel oscillations and the Friedel sum rule.

Jacques Hadamard

Jacques Hadamard (1865–1963) was a French mathematician who proved the prime number theorem in 1896, introduced Hadamard matrices, and shaped the theory of well-posed problems.

Jacques Herbrand

Jacques Herbrand (1908–1931) was a French mathematician and logician whose 1930 thesis yielded Herbrand's theorem, a foundation of automated theorem proving, and ten papers on class field theory.

Jacques Lalevée

Jacques Lalevée, born 1976 in Remiremont, France, is a French photochemist and professor at the Université de Haute-Alsace in Mulhouse, known for NHC-borane radical photoinitiators and visible-light photopolymerization.

Jacques Neveu

Jacques Neveu (1932–2016) was a Belgian-born French probabilist, considered one of the founders of modern probability theory, who directed the Laboratoire de Probabilités at Paris VI.

Jacques Piccard

Jacques Piccard, full name Jacques Ernest Piccard, was a Swiss engineer and oceanographer who made the first crewed dive to the Challenger Deep with Don Walsh in 1960.

Jacques Tits

Jacques Tits (1930–2021) was a Belgian-born French mathematician who introduced Tits buildings, held the Chair of Group Theory at the Collège de France, and won the 2008 Abel Prize for shaping modern group theory.

Jacques Tréfouël

Jacques Tréfouël (1897–1977) was a French chemist who showed in 1935 that the antibacterial action of Prontosil comes from its sulfanilamide portion, and directed the Institut Pasteur from 1940 to 1964.

Jacques U. Baenziger

Jacques U. Baenziger is a Swiss-born American biochemist and physician-scientist, Professor Emeritus at Washington University in St. Louis, known for defining the liver receptors that clear glycoprotein hormones from blood.

Jacques Vallée

Jacques Vallée, full name Jacques Fabrice Vallée, is a French-born American technologist, venture investor, and ufologist who worked on the ARPANET and proposed the control-system hypothesis of UFOs.

Jacques Winter

Jacques Winter, also Jacques-Michel Winter, was a French physicist of the École Normale Supérieure named in the 1966 Nobel speech as a performer of the first optical pumping experiment.

Jacques-Arsène d'Arsonval

Jacques-Arsène d'Arsonval (1851–1940) was a French physicist and physician who invented the moving-coil galvanometer, the basis of virtually all panel pointer meters, and established high-frequency electrotherapy, known in France as darsonvalisation.

Jacques-Louis Lions

Jacques-Louis Lions (1928–2001) was a French mathematician who worked on partial differential equations, control theory, and numerical analysis, holding a Collège de France chair from 1973 to 1998.

Jacutingaite

Jacutingaite (Pt₂HgSe₃) is a naturally occurring layered platinum-group mineral discovered in Brazil in 2008, whose exfoliated monolayer is a large-gap quantum spin Hall insulator realizing the Kane–Mele model.

Jade

Jade is a name shared by two distinct, exceptionally tough gem materials, nephrite and jadeite, whose finest form, imperial jadeite from northern Myanmar, is translucent emerald green.

Jadeite

Jadeite, known in Chinese as fei cui (翡翠), is a sodium aluminum pyroxene mineral and the more prized of the two minerals called jade, valued for its imperial-green variety.

JADES (JWST Advanced Deep Extragalactic Survey)

JADES, the JWST Advanced Deep Extragalactic Survey, is the largest James Webb Space Telescope program of its first cycle, probing early galaxy evolution in the GOODS deep fields.

JADES-GS-z14-0

JADES-GS-z14-0 (also written GS-z14) is a luminous star-forming galaxy in the GOODS-South field, confirmed by JWST in 2024 at redshift 14.32, then the most distant galaxy known.

Jae Sung Lee

Jae Sung Lee (이재성) is a South Korean chemical engineer and catalysis researcher at UNIST known for photoelectrochemical water splitting using sunlight to make hydrogen fuel.

Jaeger-LeCoultre

Jaeger-LeCoultre is a Swiss luxury watchmaker founded by Antoine LeCoultre in Le Sentier in 1833, known for making complete watches under one roof and the Reverso.

Jaephil Cho

Jaephil Cho (조재필) is a South Korean materials scientist and professor at Ulsan National Institute of Science and Technology since 2009, known for subnano-sized silicon anodes, reactive boride-infused cathodes, and founding the cathode maker SMLAB.

Jagadeesh S. Moodera

Jagadeesh S. Moodera, also published as J. S. Moodera, is an experimental condensed matter physicist at MIT known for the 1995 observation of room-temperature tunnel magnetoresistance.

Jagadese J. Vittal

Jagadese J. Vittal is an Indian-born solid-state chemist and Emeritus Professor at the National University of Singapore, known for the solid-state [2+2] photocycloaddition and metal–organic frameworks.

JAGB method

The JAGB method, introduced by Madore and Freedman in 2020, measures galaxy distances using carbon-rich asymptotic giant branch stars as near-infrared standard candles and helps calibrate the Hubble constant.

Jahn-Teller metal

A Jahn-Teller metal is an unconventional metallic state of matter, found in alkali-doped fullerides near a Mott insulator, where some electrons are localized while others conduct.

Jahn–Teller effect

The Jahn–Teller effect, also known as Jahn–Teller distortion, is a structural distortion of a non-linear molecule or crystal site that occurs when an electronic state is orbitally degenerate.

Jaime C. Grunlan

Jaime C. Grunlan is a materials scientist and professor at Texas A&M University, known for layer-by-layer polymer nanocoatings that serve as gas barriers, flame retardants, and thermoelectrics.

Jaime Gómez Rivas

Jaime Gómez Rivas is a Spanish physicist, full professor and chair of the Surface Photonics group at Eindhoven University of Technology, known for nanophotonics and THz photonics.

Jainendra K. Jain

Jainendra K. Jain is a physicist at Penn State known for his composite-fermion theory of the fractional quantum Hall effect, honored with the 2025 Wolf Prize in Physics.

Jake MacMillan

Jake MacMillan (1924–2014) was a British organic chemist at Bristol who became the world authority on gibberellin plant hormones, isolating them from runner bean seeds.