The year 1746 in

science Science is a systematic endeavor that Scientific method, builds and organizes knowledge in the form of Testability, testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earli ...

and

technology Technology is the application of knowledge to reach practical goals in a specifiable and reproducible way. The word ''technology'' may also mean the product of such an endeavor. The use of technology is widely prevalent in medicine, scie ...

involved some significant events.

Chemistry

John Roebuck John Roebuck of Kinneil FRS FRSE (1718 – 17 July 1794) was an English inventor and industrialist who played an important role in the Industrial Revolution and who is known for developing the industrial-scale manufacture of sulphuric ac ...

invents the lead-chamber process for the manufacture of sulfuric acid. * German chemist

Andreas Sigismund Marggraf Andreas Sigismund Marggraf (; 3 March 1709 – 7 August 1782) was a German chemist from Berlin, then capital of the Margraviate of Brandenburg, and a pioneer of analytical chemistry. He isolated zinc in 1746 by heating calamine and carbon. Though ...

(1709–1782) is credited with describing

zinc Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic t ...

as a separate metal. *

Eva Ekeblad Eva Ekeblad (née De la Gardie; 10 July 1724 – 15 May 1786) was a Swedish countess, salon hostess, agronomist, and scientist. She was widely known for discovering a method in 1746 to make alcohol and flour from potatoes, allowing greater use ...

discovers how to make

flour Flour is a powder made by grinding raw grains, roots, beans, nuts, or seeds. Flours are used to make many different foods. Cereal flour, particularly wheat flour, is the main ingredient of bread, which is a staple food for many c ...

and

alcohol Alcohol most commonly refers to: * Alcohol (chemistry), an organic compound in which a hydroxyl group is bound to a carbon atom * Alcohol (drug), an intoxicant found in alcoholic drinks Alcohol may also refer to: Chemicals * Ethanol, one of sev ...

out of

potato The potato is a starchy food, a tuber of the plant ''Solanum tuberosum'' and is a root vegetable native to the Americas. The plant is a perennial in the nightshade family Solanaceae. Wild potato species can be found from the southern Un ...

es.

Geology

Jean-Étienne Guettard Jean-Étienne Guettard (22 September 1715 – 7 January 1786), French naturalist and mineralogist, was born at Étampes, near Paris. In boyhood, he gained a knowledge of plants from his grandfather, who was an apothecary, and later he qualif ...

presents the first

mineralogical Mineralogy is a subject of geology specializing in the scientific study of the chemistry, crystal structure, and physical (including optical) properties of minerals and mineralized artifacts. Specific studies within mineralogy include the pro ...

map of

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan ar ...

to the

French Academy of Sciences The French Academy of Sciences (French: ''Académie des sciences'') is a learned society, founded in 1666 by Louis XIV at the suggestion of Jean-Baptiste Colbert, to encourage and protect the spirit of French scientific research. It was at th ...

. *

William Cookworthy William Cookworthy (12 April 170517 October 1780) was an English Quaker minister, a successful pharmacist A pharmacist, also known as a chemist (Commonwealth English) or a druggist (North American and, archaically, Commonwealth English), i ...

discovers

kaolin Kaolinite ( ) is a clay mineral, with the chemical composition Al2 Si2 O5( OH)4. It is an important industrial mineral. It is a layered silicate mineral, with one tetrahedral sheet of silica () linked through oxygen atoms to one octahed ...

Cornwall Cornwall (; kw, Kernow ) is a historic county and ceremonial county in South West England. It is recognised as one of the Celtic nations, and is the homeland of the Cornish people. Cornwall is bordered to the north and west by the Atlan ...

Mathematics

Jean le Rond d'Alembert Jean-Baptiste le Rond d'Alembert (; ; 16 November 1717 – 29 October 1783) was a French mathematician, mechanician, physicist, philosopher, and music theorist. Until 1759 he was, together with Denis Diderot, a co-editor of the '' Encyclop� ...

develops the theory of

complex number In mathematics, a complex number is an element of a number system that extends the real numbers with a specific element denoted , called the imaginary unit and satisfying the equation i^= -1; every complex number can be expressed in the for ...

s. *

Patrick d'Arcy Patrick d'Arcy (27 September 1725 – 18 October 1779) was an Irish mathematician born in Kiltullagh, County Galway in the west of Ireland. His family, who were Catholics, suffered under the penal laws. In 1739 d'Arcy was sent abroad b ...

announces discovery of the principle of

angular momentum In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational analog of linear momentum. It is an important physical quantity because it is a conserved quantity—the total angular momentum of a closed sy ...

in a form known as "the principle of areas" (

areal velocity In classical mechanics, areal velocity (also called sector velocity or sectorial velocity) is a pseudovector whose length equals the rate of change at which area is swept out by a particle as it moves along a curve. In the adjoining figure, sup ...

). *

Scottish Scottish usually refers to something of, from, or related to Scotland, including: *Scottish Gaelic, a Celtic Goidelic language of the Indo-European language family native to Scotland *Scottish English *Scottish national identity, the Scottish ide ...

mathematician

Matthew Stewart Matthew or Matt Stewart may refer to: *Matthew Stewart, 4th Earl of Lennox (1516–1571), father of Henry Stewart, King of the Scots *Matthew Stewart, 2nd Earl of Lennox (1460–1513), Scottish nobleman *Matthew Stewart (mathematician) (1717–1785 ...

publishes ''Some General Theorems of Considerable use in the Higher Parts of Mathematics'', including an account of

Stewart's theorem In geometry, Stewart's theorem yields a relation between the lengths of the sides and the length of a cevian in a triangle. Its name is in honour of the Scottish mathematician Matthew Stewart, who published the theorem in 1746. Statement Let ...

on the measurement of the

triangle A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices ''A'', ''B'', and ''C'' is denoted \triangle ABC. In Euclidean geometry, any three points, when non- colli ...

Physics

Pierre Louis Maupertuis Pierre Louis Moreau de Maupertuis (; ; 1698 – 27 July 1759) was a French mathematician, philosopher and man of letters. He became the Director of the Académie des Sciences, and the first President of the Prussian Academy of Science, at the ...

reads before the Berlin Science Academy the paper ''Recherche des Lois du Mouvement''. He claims that nature acts in such a way as to minimize the product of mass times velocity times distance, in an incomplete but seminal idea that derives in what is known today as the

Principle of least action The stationary-action principle – also known as the principle of least action – is a variational principle that, when applied to the ''action'' of a mechanical system, yields the equations of motion for that system. The principle states that ...

Technology

Pierre Bouguer Pierre Bouguer () (16 February 1698, Croisic – 15 August 1758, Paris) was a French mathematician, geophysicist, geodesist, and astronomer. He is also known as "the father of naval architecture". Career Bouguer's father, Jean Bouguer, one ...

publishes a treatise on

naval architecture Naval architecture, or naval engineering, is an engineering discipline incorporating elements of mechanical, electrical, electronic, software and safety engineering as applied to the engineering design process, shipbuilding, maintenance, and ...

, ''Traité du navire'', which first explains use of the

metacentric height The metacentric height (GM) is a measurement of the initial static stability of a floating body. It is calculated as the distance between the centre of gravity of a ship and its metacentre. A larger metacentric height implies greater initial stab ...

as a measure of ships' stability. * John Muller publishes ''A Treatise Containing the Elementary Part of Fortification''.

Zoology

Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, t ...

publishes ''Fauna Svecica''.

Awards

Copley Medal The Copley Medal is an award given by the Royal Society, for "outstanding achievements in research in any branch of science". It alternates between the physical sciences or mathematics and the biological sciences. Given every year, the medal is t ...

Benjamin Robins Benjamin Robins (170729 July 1751) was a pioneering British scientist, Newtonian mathematician, and military engineer. He wrote an influential treatise on gunnery, for the first time introducing Newtonian science to military men, was an early en ...

Births

* January 4 –

Benjamin Rush Benjamin Rush (April 19, 1813) was a Founding Father of the United States who signed the United States Declaration of Independence, and a civic leader in Philadelphia, where he was a physician, politician, social reformer, humanitarian, educato ...

Founding Father of the United States The Founding Fathers of the United States, known simply as the Founding Fathers or Founders, were a group of late-18th-century American revolutionary leaders who united the Thirteen Colonies, oversaw the war for independence from Great Britain ...

chemist A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties. Chemists carefully describe ...

and

physician A physician (American English), medical practitioner (Commonwealth English), medical doctor, or simply doctor, is a health professional who practices medicine, which is concerned with promoting, maintaining or restoring health through th ...

(died

1813 Events January–March * January 18–January 23 – War of 1812: The Battle of Frenchtown is fought in modern-day Monroe, Michigan between the United States and a British and Native American alliance. * January 24 – ...

) * March 7 –

André Michaux André Michaux, also styled Andrew Michaud, (8 March 174611 October 1802) was a French botanist and explorer. He is most noted for his study of North American flora. In addition Michaux collected specimens in England, Spain, France, and even Pe ...

French French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with France ...

botanist (died

1802 Events January–March * January 5 – Thomas Bruce, 7th Earl of Elgin, British ambassador to the Ottoman Empire, begins removal of the Elgin Marbles from the Parthenon in Athens, claiming they were at risk of destruction during the Ot ...

) * March 15 –

Giovanni Battista Venturi Giovanni Battista Venturi (11 September 1746 – 10 September 1822) was an Italian physicist, savant, man of letters, diplomat and historian of science. He was the discoverer of the Venturi effect, which was described in 1797 in his ''Recherches ...

, Italian

physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate ca ...

after whom the Venturi tube is named (died

1822 Events January–March * January 1 – The Greek Constitution of 1822 is adopted by the First National Assembly at Epidaurus. *January 3 - The famous French explorer, Aimé Bonpland, is made prisoner in Paraguay accused of being a sp ...

) * May 9 –

Gaspard Monge Gaspard Monge, Comte de Péluse (9 May 1746 – 28 July 1818) was a French mathematician, commonly presented as the inventor of descriptive geometry, (the mathematical basis of) technical drawing, and the father of differential geometry. Duri ...

, French

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematica ...

and

geometer A geometer is a mathematician whose area of study is geometry. Some notable geometers and their main fields of work, chronologically listed, are: 1000 BCE to 1 BCE * Baudhayana (fl. c. 800 BC) – Euclidean geometry, geometric algebra * ...

(died

1818 Events January–March * January 1 ** Battle of Koregaon: Troops of the British East India Company score a decisive victory over the Maratha Empire. ** Mary Shelley's ''Frankenstein'' is published anonymously in London. * January 2 – ...

) * July 7 –

Giuseppe Piazzi Giuseppe Piazzi ( , ; 16 July 1746 – 22 July 1826) was an Italian Catholic priest of the Theatine order, mathematician, and astronomer. He established an observatory at Palermo, now the '' Osservatorio Astronomico di Palermo – Giuseppe S ...

Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, an ethnic group or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance language *** Regional Ita ...

Theatine monk,

astronomer An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, moons, comets and galaxies – in either o ...

and mathematician (died

1826 Events January–March * January 15 – The French newspaper '' Le Figaro'' begins publication in Paris, initially as a weekly. * January 30 – The Menai Suspension Bridge, built by engineer Thomas Telford, is opened between the island ...

) * July 30 –

Louise du Pierry Louise du Pierry or Dupiery, née ''Elisabeth Louise Felicité Pourra de la Madeleine'' (30 July 1746 – 27 February 1807), was a French astronomer and professor. Life She was born in La Ferté-Bernard, in the French province of Maine, on 1 Augu ...

, French astronomer (died 1807) *

Isaac Swainson Isaac Swainson (1746–1812) was famous for his botanical garden, which was largely funded from the profits of a herbal remedy for venereal disease. For his commercial activities in the latter field, he has been called a "radical quack".McCalman, ...

English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national id ...

botanist (died

1812 Events January–March * January 1 – The ''Allgemeines bürgerliches Gesetzbuch'' (the Austrian civil code) enters into force in the Austrian Empire. * January 19 – Peninsular War: The French-held fortress of Ciudad Rodrigo is stor ...

)

Deaths

* June 14 –

Colin Maclaurin Colin Maclaurin (; gd, Cailean MacLabhruinn; February 1698 – 14 June 1746) was a Scottish mathematician who made important contributions to geometry and algebra. He is also known for being a child prodigy and holding the record for bein ...

, Scottish mathematician (born

1698 Events January–March * January 1 – The Abenaki tribe and Massachusetts colonists sign a treaty, ending the conflict in New England. * January 4 – The Palace of Whitehall in London, England is destroyed by fire. * January 23 – G ...

) * November 14 –

Georg Steller Georg Wilhelm Steller (10 March 1709 – 14 November 1746) was a German botanist, zoologist, physician and explorer, who worked in Russia and is considered a pioneer of Alaskan natural history.Evans, Howard Ensign. Edward Osborne Wilson (col.) ...

, German naturalist (born

1709 In the Swedish calendar it was a common year starting on Friday, one day ahead of the Julian and ten days behind the Gregorian calendar. Events January–March * January 1 – Battle of St. John's: The French capture St. Joh ...

)

References

{{reflist 18th century in science 1740s in science