Template:Selected anniversaries/August 4: Difference between revisions
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||1719: Johann Gottlob Lehmann born ... mineralogist and geologist. Pic. | ||1719: Johann Gottlob Lehmann born ... mineralogist and geologist. Pic. | ||
||1753: Gottfried Silbermann dies ... builder of keyboard instruments. He built harpsichords, clavichords, organs, and fortepianos; his modern reputation rests mainly on the latter two. Pic search | ||1753: Gottfried Silbermann dies ... builder of keyboard instruments. He built harpsichords, clavichords, organs, and fortepianos; his modern reputation rests mainly on the latter two. Pic search. | ||
File:William Rowan Hamilton.png|link=William Rowan Hamilton (nonfiction)|1805: Physicist, astronomer, and mathematician [[William Rowan Hamilton (nonfiction)|William Rowan Hamilton]] born. He will make important contributions to classical mechanics, optics, and algebra, inventing the [[Quaternion (nonfiction)|quaternion]]. | File:William Rowan Hamilton.png|link=William Rowan Hamilton (nonfiction)|1805: Physicist, astronomer, and mathematician [[William Rowan Hamilton (nonfiction)|William Rowan Hamilton]] born. He will make important contributions to classical mechanics, optics, and algebra, inventing the [[Quaternion (nonfiction)|quaternion]]. | ||
File:John Venn.jpg|link=John Venn (nonfiction)|1834: Mathematician and philosopher [[John Venn (nonfiction)|John Venn]] born. He will invent the Venn diagram, now widely used set theory, probability, logic, statistics, and computer science. | File:John Venn.jpg|link=John Venn (nonfiction)|1834: Mathematician and philosopher [[John Venn (nonfiction)|John Venn]] born. He will invent the Venn diagram, now widely used set theory, probability, logic, statistics, and computer science. | ||
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||1879: Ludwig Otto Hesse dies ... mathematician. He worked mainly on algebraic invariants, and geometry. The Hessian matrix, the Hesse normal form, the Hesse configuration, the Hessian group, Hessian pairs, Hesse's theorem, Hesse pencil, and the Hesse transfer principle are named after him. Pic. | ||1879: Ludwig Otto Hesse dies ... mathematician. He worked mainly on algebraic invariants, and geometry. The Hessian matrix, the Hesse normal form, the Hesse configuration, the Hessian group, Hessian pairs, Hesse's theorem, Hesse pencil, and the Hesse transfer principle are named after him. Pic. | ||
|| | ||1900: Étienne Lenoir dies ... engineer, designed the internal combustion engine. Pic. | ||
||1912: Aleksandr Danilovich Aleksandrov born ... mathematician, physicist, and mountaineer. Pic search | ||1909: Saunders Mac Lane born ... mathematician who co-founded category theory with Samuel Eilenberg. Pic. | ||
||1912: Aleksandr Danilovich Aleksandrov born ... mathematician, physicist, and mountaineer. Pic search. | |||
||1920: Mathematician and academic Karl Rohn dies. He studied algebraic space curves and completed the classification work of Georges Halphen and Max Noether. Pic. | ||1920: Mathematician and academic Karl Rohn dies. He studied algebraic space curves and completed the classification work of Georges Halphen and Max Noether. Pic. | ||
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||1921: Konstantin Sergeevich Mereschkowski dies ... biologist and botanist, active mainly around Kazan, whose research on lichens led him to propose the theory of symbiogenesis. | ||1921: Konstantin Sergeevich Mereschkowski dies ... biologist and botanist, active mainly around Kazan, whose research on lichens led him to propose the theory of symbiogenesis. | ||
||1926: George Irving Bell born ... physicist, biologist, and mountaineer. | ||1924: Mohamed M. Atalla born ...engineer, physical chemist, cryptographer, inventor and entrepreneur. His pioneering work in semiconductor technology laid the foundations for modern electronics. Pic. | ||
||1926: George Irving Bell born ... physicist, biologist, and mountaineer. Pic search. | |||
||1927: Daniel Marinus Kan born ... mathematician working in homotopy theory. Pic. | ||1927: Daniel Marinus Kan born ... mathematician working in homotopy theory. Pic. | ||
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||1945: Gerhard Gentzen dies ... mathematician and logician. He made major contributions to the foundations of mathematics, proof theory, especially on natural deduction and sequent calculus. He died in 1945 after the Second World War, because he was deprived of food after being arrested in Prague. Pic. | ||1945: Gerhard Gentzen dies ... mathematician and logician. He made major contributions to the foundations of mathematics, proof theory, especially on natural deduction and sequent calculus. He died in 1945 after the Second World War, because he was deprived of food after being arrested in Prague. Pic. | ||
||1948: Mileva Maric dies ... physicist. Einstein collaboration debate, love child unknown fate. Pic. | |||
||1964: Gulf of Tonkin incident: U.S. destroyers USS Maddox and USS Turner Joy report coming under attack in the Gulf of Tonkin. | ||1964: Gulf of Tonkin incident: U.S. destroyers USS Maddox and USS Turner Joy report coming under attack in the Gulf of Tonkin. | ||
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||2013: Daniel Marinus Kan dies ... mathematician working in homotopy theory. Pic. | ||2013: Daniel Marinus Kan dies ... mathematician working in homotopy theory. Pic. | ||
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Latest revision as of 11:01, 7 February 2022
1805: Physicist, astronomer, and mathematician William Rowan Hamilton born. He will make important contributions to classical mechanics, optics, and algebra, inventing the quaternion.
1834: Mathematician and philosopher John Venn born. He will invent the Venn diagram, now widely used set theory, probability, logic, statistics, and computer science.