42,772 articles
Heinz Bauer
Heinz Bauer (1928–2002) was a German mathematician and professor at the University of Erlangen-Nürnberg, known for axiomatic potential theory, where the harmonic spaces called Bauer spaces carry his name.
Heinz Billing
Heinz Billing (1914–2017) was a German physicist who built the first electronic computers in postwar Germany and started the laser-interferometer work behind the 2015 gravitational-wave detection.
Heinz Frei
Heinz Frei is a Swiss-born physical chemist at Lawrence Berkeley National Laboratory known for cobalt oxide water-oxidation catalysts and artificial photosynthesis using sunlight to make fuels.
Heinz G. Viehe
Heinz G. Viehe (Heinz Günther Viehe, 1929–2010) was a German-born organic chemist and professor at Louvain, known for Viehe's salt and cited in the 2021 Nobel Prize background.
Heinz Heinemann
Heinz Heinemann (1913–2005) was a German-born American chemist in heterogeneous catalysis who helped develop 14 commercial processes, held 75 patents, and spent 17 years at Lawrence Berkeley National Laboratory.
Heinz Hopf
Heinz Hopf (1894–1971) was a German-born mathematician who worked in algebraic topology and differential geometry, and gave his name to Hopf algebras and the Hopf fibration.
Heinz London
Heinz London (1907–1970) was a German-British physicist who co-created the 1935 London equations of superconductivity with his brother Fritz and proposed the dilution refrigerator, which enabled sustained millikelvin experiments.
Heinz Maier-Leibnitz
Heinz Maier-Leibnitz (1911–2000) was a German experimental physicist who built Germany's first research reactor at Garching, co-founded and directed the Institut Laue–Langevin in Grenoble, and served as president of the Deutsche Forschungsgemeinschaft from 1974 to 1979.
Heinz Prüfer
Heinz Prüfer (Ernst Paul Heinz Prüfer, 1896–1934) was a German mathematician, a pioneer of abelian group theory, known for the Prüfer sequence, group, and domain.
Heinz-Otto Kreiss
Heinz-Otto Kreiss (1930–2015) was a German-born mathematician who worked in Stockholm and at UCLA, known for the Kreiss matrix theorem and stability theory for the numerical solution of differential equations.
Heisei (era)
Heisei (平成) was the era name of Japan from January 8, 1989 to April 30, 2019, corresponding to the reign of Emperor Akihito, the 125th emperor.
Heisenberg algebra
The Heisenberg algebra is a nilpotent Lie algebra, formally the Heisenberg Lie algebra, whose brackets encode the canonical commutation relations of quantum mechanics; Hermann Weyl identified it in the 1920s.
Heisenberg cut
The Heisenberg cut is the dividing line, in the Copenhagen description of a quantum experiment, between the object treated quantum mechanically and the apparatus treated classically.
Heisenberg group
The Heisenberg group is a nilpotent Lie group of real upper triangular 3 × 3 matrices with ones on the diagonal, named for its role in quantum mechanics.
Heisenberg limit
The Heisenberg limit is the fundamental bound on precision in quantum metrology, stating uncertainty can scale no better than 1/N in the number of quantum resources.
Heisenberg model
The Heisenberg model is a lattice model of magnetism in which localized quantum spins on atomic sites interact through exchange, introduced by Werner Heisenberg in 1928 to explain ferromagnetism.
Heisenberg picture
The Heisenberg picture is a formulation of quantum mechanics, developed by Werner Heisenberg in 1925, in which states stay fixed and operators evolve in time.
Heisenberg uncertainty principle
The Heisenberg uncertainty principle, derived by Werner Heisenberg in 1927, is a cornerstone of quantum mechanics stating that position and momentum cannot both be determined with arbitrary precision at the same time.
Heisenberg's microscope
Heisenberg's microscope, also called the gamma-ray microscope, is a thought experiment from Heisenberg's 1927 uncertainty principle paper, where gamma rays measuring an electron's position give it an uncontrollable recoil.
Heisuke Hironaka (広中平祐)
Heisuke Hironaka (広中平祐) was a Japanese mathematician, born in 1931, who solved resolution of singularities in algebraic geometry and received the Fields Medal in 1970, the second Japanese mathematician to win it.
Hekla
Hekla is an active stratovolcano in southern Iceland, standing 1,490 m high and among the country's most active, erupting 23 times in historical time, most recently in 2000.
Held group
The Held group (He) is a sporadic finite simple group discovered by Dieter Held in 1969 while studying groups related to the Mathieu group M24.
Hele-Shaw cell
A Hele-Shaw cell is an experimental device with two parallel transparent plates separated by a narrow gap, used to study fluid flow and viscous fingering.
Helen Czerski
Helen Czerski is a British physicist at University College London who studies bubbles and breaking waves at the ocean surface, and presents BBC science documentaries.
Helen Hansma
Helen Hansma is an American biophysicist, born in 1945, at UC Santa Barbara known for imaging DNA with atomic force microscopy and proposing the mica hypothesis of life's origin.
Helen Longino
Helen Longino is an American philosopher of science, emerita professor at Stanford University, known for critical contextual empiricism, holding that scientific objectivity comes from community criticism rather than individual method.
Helen Quinn
Helen Rhoda Quinn (born 1943) is an Australian-born American theoretical particle physicist, Professor Emerita at SLAC, known for the Peccei–Quinn symmetry behind the axion and for the Georgi–Quinn–Weinberg calculation.
Helen Sharman
Helen Sharman is a British chemist who became the first Briton in space and the first woman to visit Mir, flying there in May 1991.
Helen Thom Edwards
Helen Thom Edwards (1936–2016) was an American accelerator physicist at Fermilab who led the Tevatron, the first superconducting proton synchrotron and the world's most powerful collider for 27 years.
Helena Rasiowa
Helena Rasiowa (1917–1994) was a Polish mathematician and logician who established algebraic methods for studying classical, intuitionistic, modal, and many-valued logics, heading mathematical logic at the University of Warsaw.