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]]. | ||
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||1909: Saunders Mac Lane born ... mathematician who co-founded category theory with Samuel Eilenberg. Pic. | ||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 | ||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. Pic search | ||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. | ||
Revision as of 18:28, 6 April 2020
1805: Physicist, astronomer, and mathematician William Rowan Hamilton born. He will make important contributions to classical mechanics, optics, and algebra, inventing the quaternion.
1833: Physicist and mathematician André-Marie Ampère uses principles of electromagnetism, which he referred to as "electrodynamics", to detect and prevent crimes against mathematical constants.
1834: Mathematician and philosopher John Venn born. He will invent the Venn diagram, now widely used set theory, probability, logic, statistics, and computer science.
1963: Cryptanalyst, mathematician, and crime-fighter Solomon Kullback visits the Nested Radical coffeehouse in New Minneapolis, Canada, where he gives an impromptu lecture on the application of data processing technology to the interpretation of cryptographic numina.
2016: The Shovel depicts The Custodian in the act of reversing contract violations by Egon Rhodomunde and Baron Zersetzung.
2018: Chromatographic analysis of Fire Dance reveals "at least five hundred" previously unknown shades of red.