All articles starting with K

Karl Henrik Johansson

Karl Henrik Johansson, born 1967 in Växjö, Sweden, is Chaired Professor of Networked Control at KTH, working on networked control systems and road traffic control, and received the 2024 IEEE Hendrik W. Bode Lecture Prize.

Karl Henry Beyer, Jr.

Karl Henry Beyer, Jr. (1914–1996) was an American pharmacologist who led the discovery of probenecid and the thiazide diuretics, including chlorothiazide, and won the Albert Lasker Award in 1974.

Karl Hermann Frank

Karl Hermann Frank (1898–1946), Sudeten German Nazi official, State Secretary then German State Minister for Bohemia and Moravia and Higher SS and Police Leader; responsible for Lidice, executed in Prague in 1946.

Karl Herrup

Karl Herrup is a neurobiologist and professor at the University of Pittsburgh known for rejecting the amyloid hypothesis of Alzheimer's disease and for the cell-cycle hypothesis of neuronal death.

Karl Herzfeld

Karl Herzfeld was an Austrian-born American theoretical physicist who founded the relaxation theory of ultrasonic sound absorption, taught at the Catholic University of America, and joined the National Academy of Sciences in 1960.

Karl Hess

Karl Hess is an Austrian-born American electrical engineer at the University of Illinois Urbana-Champaign, a founder of computational electronics known for real space transfer and deuterium processing of chips.

Karl Heun

Karl Heun (1859–1929) was a German mathematician who introduced Heun's equation, a second-order differential equation generalizing the hypergeometric equation, and Heun's 1900 method, an early step in the Runge–Kutta lineage.

Karl Hildebrand von Canstein

Karl Hildebrand von Canstein (1667–1719) was a Brandenburg nobleman and Pietist layman who founded the Cansteinsche Bibelanstalt in Halle in 1710, considered the world's first Bible society.

Karl Howman

Karl Howman (born 1953, Woolwich, London) is an English actor, best known as Jacko in the BBC1 sitcom Brush Strokes (1986–1991) and as Buster Briggs in EastEnders from 2014, also known for Mulberry and Flash commercials.

Oct 22, 2026

Karl Immermann

Karl Leberecht Immermann (1796–1840) was a German novelist, dramatist, poet, and judge in Düsseldorf who wrote Die Epigonen and Münchhausen and led an influential reform of the city theater.

Karl J. Astrom

Karl J. Astrom, born Karl Johan Åström in 1934, is a Swedish control engineer at Lund University known for adaptive control and auto-tuning of PID regulators.

Karl J. Niklas

Karl J. Niklas (K. J. Niklas) is a plant evolutionist and paleobotanist, Liberty Hyde Bailey Professor emeritus at Cornell, known for quantitative studies of plant form, biomechanics, and allometry.

Karl J. Springer

Karl J. Springer (Karl Josef Springer) was a San Antonio mechanical engineer at Southwest Research Institute, elected to the National Academy of Engineering in 1996.

Karl Jacobs

Karl Thomas Jacobs, also known as GamerBoyKarl, is an American YouTuber and Twitch streamer born 1998 in New York, known for MrBeast's crew, the Dream SMP, Tales from the SMP, and Misfits Gaming co-ownership.

Karl Jaspers

Karl Theodor Jaspers (1883–1969), German-Swiss psychiatrist and existential philosopher; author of General Psychopathology (1913) and Philosophie (1932); Heidelberg professor dismissed by the Nazis, later Basel.

Karl Jenkins

Sir Karl Jenkins (born 1944, Penclawdd, Wales) is a Welsh composer, formerly of Nucleus and Soft Machine, creator of Adiemus and The Armed Man: A Mass for Peace, knighted in 2015.

Karl Johan Åström

Karl Johan Åström, born in Sweden in 1934, is a control engineer and Professor Emeritus at Lund University known for adaptive control and auto-tuning of PID regulators.

Oct 21, 2026

Karl Johan Svensson

Karl Johan Svensson (later Sarland), Swedish gymnast born 12 March 1887 in Solna, died 20 January 1964 in Stockholm; won Olympic team gold at London 1908 and Stockholm 1912 with KFUM GA Stockholm, and worked as a civil engineer.

Karl Johann Friedrich Roth

Karl Johann Friedrich Roth (1780–1852) was a German jurist and royal Bavarian Staatsrat who led the Protestant church in Bavaria as Oberkonsistorialpräsident from 1828 to 1848.

Karl Johann Greith

Karl Johann Greith (1807–1882) was a Swiss Catholic priest, church historian, and Bishop of St. Gallen from 1862, known for his history of the early Irish Church.

Karl Josef von Hefele

Karl Josef von Hefele (1809–1893) was a German Catholic bishop and church historian, author of the Conciliengeschichte, the standard reference work on the church's councils.

Karl K. Berggren

Karl K. Berggren is an MIT electrical engineer working on superconducting nanowire single-photon detectors and nanofabrication; in 2025 he became faculty head of electrical engineering at MIT.

Karl K. Turekian

Karl K. Turekian (1927–2013) was an American geochemist who spent his career at Yale University, best known for osmium-isotope measurements supporting the meteorite impact that ended the dinosaurs.

Karl Kandler

Karl Kandler is a German-trained neuroscientist and professor of neurobiology at the University of Pittsburgh who studies how auditory brain circuits are wired before hearing begins.

Karl Kautsky

Karl Kautsky, born Karl Johann Kautsky (1854–1938), was a Czech-Austrian Marxist theoretician who edited Die Neue Zeit and drafted the German Social Democrats' 1891 Erfurt Programme.

Karl Kehrle

Karl Kehrle, Brother Adam (1898–1996), German-born Benedictine monk at Buckfast Abbey, Devon, who bred the Buckfast honey bee after acarine disease wiped out native British bees; abbey beekeeper 1919–1992, OBE 1974.

Karl Kennedy

Karl Kennedy (Karl Raymond Marx Kennedy) is a fictional doctor in the Australian soap Neighbours, played by Alan Fletcher from 20 September 1994 to 2022. Married to Susan, father of Malcolm, Libby, Billy and Holly; Ramsay Street's longest-serving resident.