Physical world and mathematics

Henri Padé

Henri Eugène Padé (1863–1953) was a French mathematician and academic administrator who introduced the Padé approximants in his 1892 thesis under Charles Hermite, winning the 1906 Grand Prix.

Henri Poincaré was a French mathematician, theoretical physicist, and philosopher of science (1854–1912) who founded algebraic topology, transformed celestial mechanics into chaos theory, and posed the Poincaré conjecture.

Henri Skoda

Henri Skoda, born 1945, is a French mathematician specializing in several complex variables, known for his L2 estimates, division theorem, and work on positive currents.

Henri ter Meulen

Henri ter Meulen (1871–1942) was a Dutch chemist and professor of analytical chemistry at Delft from 1905 to 1936 who developed a catalytic hydrogenation method for organic elemental analysis.

Henri Victor Regnault

Henri Victor Regnault (1810–1878) was a French chemist and physicist whose precise measurements of the thermal properties of gases fixed the data used by early thermodynamicists.

Henri-Alexandre Deslandres

Henri-Alexandre Deslandres (1853–1948) was a French astrophysicist who established the empirical laws of molecular band spectra and invented the spectroheliograph in 1892, independently of George Hale, later directing the Meudon Observatory.

Henrietta Swan Leavitt

Henrietta Swan Leavitt (1868–1921) was an American astronomer at Harvard College Observatory who discovered the Cepheid period–luminosity relation, the Leavitt Law, which enabled measuring distances to galaxies and underpinned Hubble's 1929 expanding-universe result.

Henrik Clausen

Henrik Clausen (born 1957 in Denmark) is a Danish glycobiologist, professor at the University of Copenhagen, and director of the Copenhagen Center for Glycomics, which he founded in 2008.

Henrik Koch

Henrik Koch, born 1964 in Aarhus, Denmark, is a quantum chemist and professor of theoretical chemistry at NTNU in Trondheim, known for developments in coupled cluster response theory.

Henrik Topsøe

Henrik Topsøe (1944–2019) was a Danish chemical engineer and catalysis scientist, son of Haldor Topsøe, known for the Co-Mo-S model of refinery hydrotreating catalysts and elected a National Academy of Engineering Foreign Associate in 2013.

Henry (unit)

The henry (symbol H) is the SI derived unit of electrical inductance: one henry produces one volt when the current changes at one ampere per second. It is named for Joseph Henry.

Henry A. Bent

Henry A. Bent (1926–2015) was an American physical chemist, professor at Minnesota, North Carolina State, and Pittsburgh, best known for Bent's rule on hybridization and bond angles.

Henry Alexander Miers

Henry Alexander Miers (1858–1942) was a British mineralogist and crystallographer who held the Waynflete Chair at Oxford, led the University of London and Manchester, and was knighted in 1912.

Henry Andrews Bumstead

Henry Andrews Bumstead (1870–1920) was an American physicist at Yale University known for research on electromagnetism, radioactivity, and the early American reception of Einstein's relativity.

Henry Augustus Rowland

Henry Augustus Rowland (1848–1901) was an American experimental physicist, the first professor of physics at Johns Hopkins University, known for the concave diffraction grating and his map of the solar spectrum.

Henry Barker Hill

Henry Barker Hill was an American organic chemist who spent his career at Harvard, becoming professor in 1884 and known for research on uric acid and furfural derivatives that helped establish furan chemistry.

Henry Benedict Medlicott

Henry Benedict Medlicott (1829–1905) was an Irish geologist who led the Geological Survey of India and co-authored the Manual of the Geology of India, the standard reference for Indian geologists.

Henry Bryant Bigelow

Henry Bryant Bigelow (1879–1967) was an American oceanographer who surveyed the Gulf of Maine and served as the first director of Woods Hole Oceanographic Institution.

Henry C. Wente

Henry C. Wente (1936–2020) was an American differential geometer at the University of Toledo who in 1984 found the first compact constant mean curvature surface besides the sphere, the Wente torus.

Henry Cavendish

Henry Cavendish (1731–1810) was a British natural philosopher best known for his work on hydrogen, proving water is a compound, and measuring the Earth's mean density in the Cavendish experiment.

Henry Clapp Sherman

Henry Clapp Sherman (1875–1955) was an American food chemist and nutritionist who spent his career at Columbia University, quantifying dietary calcium and vitamin requirements and receiving the Franklin Medal in 1946.

Henry Clifton Sorby

Henry Clifton Sorby (1826–1908) was a Sheffield scientist who founded microscopical petrology, the study of rocks in thin section, and is the father of metallography.

Henry Crew

Henry Crew (1859–1953) was an American physicist and spectroscopist, Fayerweather Professor of Physics at Northwestern University from 1892 to 1930, known for atomic spectroscopy and his 1914 translation of Galileo's Two New Sciences.

Henry Draper

Henry Draper (1837–1882) was an American physician and astronomer at the University of the City of New York who pioneered astrophotography, taking the first photograph of a star's spectrum, of Vega, in 1872.

Henry Draper Catalogue

The Henry Draper Catalogue, or HD Catalogue, is a Harvard star catalog of stellar spectral types, published in nine volumes between 1918 and 1924 by Annie Jump Cannon and Edward Pickering.

Henry Drysdale Dakin

Henry Drysdale Dakin (1880–1952) was a British-born chemist who worked in the United States, known for the Dakin oxidation, the synthesis of adrenaline, and Dakin's solution antiseptic.

Henry Dube

Henry Dube is a German organic chemist who holds the Chair of Organic Chemistry I at FAU Erlangen-Nürnberg and is known for light-driven molecular motors and photoswitches.

Sep 20, 2026

Henry Elderfield

Henry Elderfield (1943–2016), known as Harry, was a British marine geochemist at Cambridge who established modern oceanic trace metal chemistry and the foraminiferal Mg/Ca paleothermometer.

Henry Enfield Roscoe

Henry Enfield Roscoe (1833–1915) was an English chemist who, with Robert Bunsen, founded quantitative photochemistry, first prepared pure metallic vanadium, and built Owens College Manchester into Britain's leading chemistry school.