edgepedia

Physical world and mathematics

42,772 articles

Joseph Polchinski

Joseph Polchinski (1954–2018) was an American theoretical physicist at UC Santa Barbara known for discovering D-branes, his two-volume textbook String Theory, and the 2012 black hole firewall argument.

Joseph Priestley

Joseph Priestley (1733–1804) was an English chemist, minister, and prolific author who isolated oxygen in 1774, discovered several gases, and emigrated to Pennsylvania in 1794 after a mob destroyed his Birmingham laboratory.

Joseph Ritt

Joseph Fels Ritt (1893–1951) was an American mathematician at Columbia University who created differential algebra, the algebraic theory of ordinary and partial differential equations, and was elected to the National Academy of Sciences in 1933.

Joseph Rotblat

Joseph Rotblat (Józef Rotblat, 1908–2005) was a Polish-born British physicist who left the Manhattan Project in 1944 and shared the 1995 Nobel Peace Prize with Pugwash.

Joseph Rudnick

Joseph Rudnick is a statistical physicist, UCLA professor emeritus and former Dean of Physical Sciences, known for the Rudnick–Gaspari asphericity and Rudnick–Hu winding-angle results and the textbook Elements of the Random Walk.

Joseph Saxton

Joseph Saxton (1799–1873) was an American inventor and metrologist who built the magneto-electric machine in London in 1832, took the oldest extant American photograph in 1839, and led the U.S. Office of Weights and Measures.

Joseph Silk

Joseph Silk, born 1942 in London, is a British and US cosmologist known for Silk damping, cosmic microwave background anisotropy theory, and the physics of galaxy formation.

Joseph Smagorinsky

Joseph Smagorinsky (1924–2005) was an American meteorologist who founded and directed NOAA's Geophysical Fluid Dynamics Laboratory from 1955 to 1983, pioneering computer modeling of weather and climate.

Joseph Sweetman Ames

Joseph Sweetman Ames (1864–1943) was an American physicist and Johns Hopkins University president known for spectroscopy research and chairing the NACA, forerunner of NASA's Ames Research Center.

Joseph T. Kummer

Joseph T. Kummer (1919–1997) was an American chemical engineer and electrochemist at Ford Motor Company's research laboratories, known for inventing the sodium-sulfur battery and pioneering beta-alumina ionic conductors.

Joseph Tyrrell

Joseph Burr Tyrrell was a Canadian geologist with the Geological Survey of Canada who in 1884 found the Albertosaurus skull in the Alberta badlands and later explored the Barren Lands.

Joseph Valentin Boussinesq

Joseph Valentin Boussinesq (1842–1929) was a French mathematician and physicist known for the Boussinesq approximation, the Boussinesq equation for water waves, and the eddy-viscosity hypothesis in turbulence.

Joseph Veverka

Joseph Frank Veverka, born 1941, is an American planetary astronomer and Cornell professor emeritus who led imaging teams on Voyager, Galileo, NEAR, and Deep Impact, and won the 2013 Kuiper Prize.

Joseph Victor Smith

Joseph Victor Smith (1928–2007) was an English mineralogist and crystallographer who spent 45 years as a University of Chicago professor, known for feldspar crystal structures, zeolite frameworks, and Apollo lunar sample analysis.

Joseph W. Kennedy

Joseph W. Kennedy (1916–1957) was an American chemist who co-discovered plutonium at Berkeley in 1941, led Los Alamos' Chemistry and Metallurgy Division, and chaired chemistry at Washington University in St. Louis.

Joseph W. Orenstein

Joseph W. Orenstein is an experimental condensed matter physicist at UC Berkeley and Lawrence Berkeley National Laboratory, known for ultrafast optical studies of quantum materials.

Joseph W. Perry

Joseph W. Perry (1955–2022) was an American physical chemist and Georgia Tech professor known for two-photon absorption, optical limiting, and 3D microfabrication, and a 1999 Nature paper.

Joseph W. Ziller

Joseph W. Ziller is an American X-ray crystallographer and staff scientist who has directed UC Irvine's X-ray Crystallography Facility since 1986, co-authoring actinide and lanthanide structures.

Joseph Wang

Joseph Wang, born 1948, is an electrochemist and nanoengineer who holds the SAIC Endowed Chair at UC San Diego, known for wearable chemical sensors, synthetic nanomotors, and on-body energy systems.

Joseph Weber

Joseph Weber (1919–2000) was an American physicist at the University of Maryland who founded the experimental search for gravitational waves and pioneered the resonant bar detector.

Joseph Wedderburn

Joseph Henry Maclagan Wedderburn was a Scottish mathematician who proved in 1905 that every finite division algebra is commutative, and gave the structure theory of semisimple algebras.

Joseph Winlock

Joseph Winlock (1826–1875) was an American astronomer, third director of the Harvard College Observatory from 1866, and a founding member of the National Academy of Sciences.

Joseph Wyan Chamberlain

Joseph Wyan Chamberlain (1928–2004) was an American astronomer and geophysicist specializing in the aurora, airglow, and planetary atmospheres; an airglow band system bears his name.

Joseph-Louis Lagrange

Joseph-Louis Lagrange, baptized Giuseppe Lodovico Lagrangia, was an Italian-born mathematician who directed mathematics at the Berlin Academy for 20 years and finished his career in Paris.

Josephson diode effect

The Josephson diode effect is the nonreciprocal behavior of a Josephson junction, the superconducting analog of a semiconducting diode, carrying supercurrent with zero resistance in only one direction.

Josephson diode in van der Waals junctions

A Josephson diode in van der Waals junctions is a superconducting device that conducts supercurrent in one direction only, demonstrated field-free in stacked NbSe2 crystals in 2022.

Josephson effect

The Josephson effect, also known as Josephson tunneling, is the flow of a supercurrent across a thin barrier between two superconductors, predicted by Brian Josephson in 1962.

Josephson junction

A Josephson junction is a pair of superconducting electrodes separated by a thin weak link, predicted by Brian Josephson in 1962 and honored with the 1973 Nobel Prize in Physics.

Josephson parametric amplifier

A Josephson parametric amplifier (JPA) is a superconducting microwave amplifier using the nonlinearity of Josephson junctions to read out superconducting qubits with noise at or near the quantum limit.

Josephson parametric converter

A Josephson ring modulator amplifier is a superconducting microwave parametric amplifier using a ring of four Josephson junctions, capable of amplification near the quantum limit.