Physical world and mathematics

Josephson voltage standard

The Josephson voltage standard is a quantum instrument producing exact, calculable voltages from superconducting junctions driven by microwaves, realizing the volt from fundamental constants since 2019.

Josephus problem

The Josephus problem, named for the historian Flavius Josephus, asks where the sole survivor stands when n people in a circle are removed every q-th in turn.

Joshua A. Breslau

Joshua A. Breslau, also known as Joshua Adam Breslau, is an American computational plasma physicist at Princeton Plasma Physics Laboratory known for the M3D simulation codes.

Joshua C. Bienfang

Joshua C. Bienfang is an American physicist at NIST in Gaithersburg, Maryland, working on quantum communications and single-photon detection, who received a Presidential Early Career Award in 2006.

Joshua D. Caldwell

Joshua D. Caldwell, also known as Joshua Caldwell, is an American materials scientist and professor of mechanical engineering at Vanderbilt University known for phonon polariton research.

Joshua E. Goldberger

Joshua E. Goldberger is the Charles H. Kimberly Professor of Chemistry and Biochemistry at Ohio State, a leader in two-dimensional materials known for germanane and goniopolar materials.

Joshua Edel

Joshua B. Edel is a professor of biosensing and analytical sciences at Imperial College London, where since 2006 he has developed single-molecule sensors, including nanopores and nanoscale tweezers.

Sep 20, 2026

Joshua Jortner

Joshua Jortner (Hebrew: יהושע יורטנר), born in Poland in 1933, is an Israeli physical chemist at Tel Aviv University known for radiationless transitions and electron transfer theory.

Oct 10, 2026

Joshua N. Goldberg

Joshua N. Goldberg, also known as Joshua Norman Goldberg, was an American mathematical physicist at Syracuse University known for the 1962 Goldberg–Sachs theorem on Einstein's equations.

Joshua S. Figueroa

Joshua S. Figueroa is an American inorganic and organometallic chemist, professor at UC San Diego, known for stabilizing reactive low-valent metal complexes with bulky isocyanide ligands.

Oct 10, 2026

Joshua Silver

Joshua Silver is a professor of physics at the University of Oxford who invented self-adjusting eyeglasses, fluid-filled lenses wearers dial to their own prescription, distributed in developing countries.

Joshua Winn

Joshua Winn is an astrophysicist and Professor of Astrophysical Sciences at Princeton who studies exoplanetary systems, known for measuring spin-orbit alignment and authoring The Little Book of Exoplanets (2023).

Josiah P. Cooke

Josiah P. Cooke was an American chemist and mineralogist who held Harvard's Erving Professorship from 1850 until 1894, known for atomic-weight measurements and pioneering laboratory teaching.

Josiah Whitney

Josiah Dwight Whitney was an American geologist who directed the California Geological Survey from 1860 to 1874 and later taught at Harvard; Mount Whitney is named for him.

Josiah Willard Gibbs

Josiah Willard Gibbs (1839–1903) was an American theoretical physicist and chemist who spent his career at Yale, laying the foundation of chemical thermodynamics with papers published from 1876 to 1878.

Oct 10, 2026

Josip Plemelj

Josip Plemelj (1873–1967) was a Slovenian mathematician known for the Sokhotski–Plemelj formulas, his 1908 solution of the Riemann problem, and serving as the first rector of the University of Ljubljana.

Jost function

The Jost function is an analytic function of the complex wave number that encodes the bound states, resonances, and scattering phase shifts of a quantum two-body problem.

Joukowsky transform

The Joukowsky transform, also written Joukowski or Zhukovsky transform, is a conformal map that turns flow around a circle into flow around an airfoil to compute lift.

Joule

The joule (symbol J) is the SI derived unit of energy, work, and heat, equal to one newton-meter, adopted in 1889 and named after physicist James Prescott Joule.

Joule expansion

Joule expansion, also called free expansion, is the expansion of a gas into a vacuum inside an insulated container, with no temperature change for an ideal gas.

Joule heating

Joule heating, also called Ohmic or resistive heating, is the irreversible conversion of electrical energy into heat when current flows through a resistive element, as quantified by Joule's law.

Joule–Thomson effect

The Joule–Thomson effect, also called the Kelvin–Joule effect, is the temperature change of a real gas forced through a valve or porous plug from higher to lower pressure.

Journal Article Tag Suite

Journal Article Tag Suite (JATS) is an XML standard, published as ANSI/NISO Z39.96, defining elements for tagging journal articles, developed by NCBI and first released in 2003.

Journal de Physique

The Journal de Physique, founded as Journal de Physique Théorique et Appliquée in 1872 by Joseph Charles d'Almeida, was the first periodical devoted exclusively to physics.

Oct 21, 2026

Journal of agricultural and food chemistry

Journal of Agricultural and Food Chemistry (JAFC), ISSN 0021-8561, is the American Chemical Society's peer-reviewed journal of agricultural and food chemistry, founded 1953 with the ACS Ag & Food Division; Editor-in-Chief Thomas F. Hofmann.

Journal of Algebraic Combinatorics

The Journal of Algebraic Combinatorics is a peer-reviewed mathematics journal published by Springer. It was founded in 1992 and publishes research where combinatorics and algebra interact.

Oct 21, 2026

Journal of anthropological sciences = Rivista di antropologia : JASS

Journal of Anthropological Sciences (JASs), Italian peer-reviewed anthropology journal of the Istituto Italiano di Antropologia, Rome; continues Rivista di Antropologia; covers human paleontology, prehistory, and population genetics; print ISSN 1827-4765.