The year 1751 in

science Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. Modern science is typically divided into twoor threemajor branches: the natural sciences, which stu ...

and

technology Technology is the application of Conceptual model, conceptual knowledge to achieve practical goals, especially in a reproducible way. The word ''technology'' can also mean the products resulting from such efforts, including both tangible too ...

involved some significant events.

Astronomy

* The

globular cluster A globular cluster is a spheroidal conglomeration of stars that is bound together by gravity, with a higher concentration of stars towards its center. It can contain anywhere from tens of thousands to many millions of member stars, all orbiting ...

47 Tucanae 47 Tucanae or 47 Tuc (also designated as NGC 104 and Caldwell 106) is a globular cluster located in the constellation Tucana. It is about from Earth, and 120 light years in diameter. 47 Tuc can be seen with the naked eye, with an apparent magni ...

'' (or 47 Tuc), visible with the unaided eye from the southern hemisphere, is discovered by the French astronomer

Nicolas Louis de Lacaille Abbé Nicolas-Louis de Lacaille (; 15 March 171321 March 1762), formerly sometimes spelled de la Caille, was a French astronomer and geodesist who named 14 out of the 88 constellations. From 1750 to 1754, he studied the sky at the Cape of Goo ...

, who catalogues it in his list of southern nebulous objects: at a distance of 16000

lightyear A light-year, alternatively spelled light year (ly or lyr), is a unit of length used to express astronomical distance, astronomical distances and is equal to exactly , which is approximately 9.46 trillion km or 5.88 trillion mi. As defined by t ...

s, it has a total mass nearly 1 million times the

Sun The Sun is the star at the centre of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light a ...

's mass and is 120

light years A light-year, alternatively spelled light year (ly or lyr), is a unit of length used to express astronomical distances and is equal to exactly , which is approximately 9.46 trillion km or 5.88 trillion mi. As defined by the International Astro ...

across, making it appear in the sky as wide as the full moon.

Biology

Linnaeus Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming o ...

publishes his ''

Philosophia Botanica ''Philosophia Botanica'' ("Botanical Philosophy", ed. 1, Stockholm & Amsterdam, 1751.) was published by the Swedish naturalist and physician Carl Linnaeus (1707–1778) who greatly influenced the development of botanical Taxonomy (biology), taxono ...

'', the first textbook of descriptive

systematic Systematic may refer to: Science * Short for systematic error * Systematic fault * Systematic bias, errors that are introduced by an inaccuracy inherent to the system Economy * Systematic trading, a way of defining trade goals, risk control ...

botanical

taxonomy image:Hierarchical clustering diagram.png, 280px, Generalized scheme of taxonomy Taxonomy is a practice and science concerned with classification or categorization. Typically, there are two parts to it: the development of an underlying scheme o ...

and the first appearance of his

binomial nomenclature In taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, altho ...

Chemistry

Nickel Nickel is a chemical element; it has symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive, but large pieces are slo ...

(symbol Ni,

atomic weight Relative atomic mass (symbol: ''A''; sometimes abbreviated RAM or r.a.m.), also known by the deprecated synonym atomic weight, is a dimensionless physical quantity defined as the ratio of the average mass of atoms of a chemical element in a giv ...

58.71,

atomic number The atomic number or nuclear charge number (symbol ''Z'') of a chemical element is the charge number of its atomic nucleus. For ordinary nuclei composed of protons and neutrons, this is equal to the proton number (''n''p) or the number of pro ...

28) is discovered, in the mineral

nickeline Nickeline or niccolite is the mineral form of nickel arsenide. The naturally-occurring mineral contains roughly 43.9% nickel and 56.1% arsenic by mass, but composition of the mineral may vary slightly. Small quantities of sulfur, iron and cobalt ...

, by

chemist A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a graduated scientist trained in the study of chemistry, or an officially enrolled student in the field. Chemists study the composition of ...

Axel Fredrik Cronstedt Baron Axel Fredrik Cronstedt (''/kroonstet/'' 23 December 1722 – 19 August 1765) was a Sweden, Swedish Mineralogy, mineralogist and chemist who discovered the Chemical element, element nickel in 1751 as a mining expert with the Bureau of Mines. ...

Stockholm, Sweden Stockholm (; ) is the Capital city, capital and List of urban areas in Sweden by population, most populous city of Sweden, as well as the List of urban areas in the Nordic countries, largest urban area in the Nordic countries. Approximately ...

(although nickel was used in coins in

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

as early as 235 BCE).

Medicine and physiology

* May 11 –

Pennsylvania Hospital Pennsylvania Hospital is a Private hospital, private, non-profit, 515-bed teaching hospital located at 800 Spruce Street (Philadelphia), Spruce Street in Center City, Philadelphia, Center City Philadelphia, The hospital was founded on May 11, 17 ...

founded in

Philadelphia Philadelphia ( ), colloquially referred to as Philly, is the List of municipalities in Pennsylvania, most populous city in the U.S. state of Pennsylvania and the List of United States cities by population, sixth-most populous city in the Unit ...

Benjamin Franklin Benjamin Franklin (April 17, 1790) was an American polymath: a writer, scientist, inventor, statesman, diplomat, printer, publisher and Political philosophy, political philosopher.#britannica, Encyclopædia Britannica, Wood, 2021 Among the m ...

and Thomas Bond, the first in the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

. *

Newcastle Infirmary The Royal Victoria Infirmary (RVI) is a 673-bed tertiary referral hospital and research centre in Newcastle upon Tyne, England, with strong links to Newcastle University. The hospital is part of the Newcastle upon Tyne Hospitals NHS Foundation T ...

founded in

Newcastle upon Tyne Newcastle upon Tyne, or simply Newcastle ( , Received Pronunciation, RP: ), is a City status in the United Kingdom, cathedral city and metropolitan borough in Tyne and Wear, England. It is England's northernmost metropolitan borough, located o ...

, England. * The pupil

reflex In biology, a reflex, or reflex action, is an involuntary, unplanned sequence or action and nearly instantaneous response to a stimulus. Reflexes are found with varying levels of complexity in organisms with a nervous system. A reflex occurs ...

is discovered: it is the first reflex of the human body to be discovered.

Publications

* Commencement of publication in

Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...

of the '' Encyclopédie, ou dictionnaire raisonné des sciences, des arts et des métiers'' edited by

Denis Diderot Denis Diderot (; ; 5 October 171331 July 1784) was a French philosopher, art critic, and writer, best known for serving as co-founder, chief editor, and contributor to the along with Jean le Rond d'Alembert. He was a prominent figure during th ...

and

Jean 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 ''Encyclopédi ...

. * 1st edition of

's ''

Experiments and Observations on Electricity ''Experiments and Observations on Electricity'' is a treatise by Benjamin Franklin based on letters that he wrote to Peter Collinson, who communicated Franklin's ideas to the Royal Society. The letters were published as a book in England in 175 ...

'' is published.

Awards

Copley Medal The Copley Medal is the most prestigious award of the Royal Society of the United Kingdom, conferred "for sustained, outstanding achievements in any field of science". The award alternates between the physical sciences or mathematics and the bio ...

: John Canton

Births

* April 5 – Maria Lullin,

Swiss Swiss most commonly refers to: * the adjectival form of Switzerland * Swiss people Swiss may also refer to: Places * Swiss, Missouri * Swiss, North Carolina * Swiss, West Virginia * Swiss, Wisconsin Other uses * Swiss Café, an old café located ...

entomologist (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 imprisoned in Paraguay on charges of espionage. ...

) * March 3 – Pierre Prévost, Swiss philosopher and

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 cau ...

(died

1839 Events January–March * January 2 – The first photograph of the Moon is taken, by French photographer Louis Daguerre. * January 6 – Night of the Big Wind: Ireland is struck by the most damaging cyclone in 300 years. * January 9 – ...

) * March 17 –

Anders Dahl Anders (or Andreas) Dahl (17 March 1751 – 25 May 1789) was a Swedes, Swedish botanist and student of Carl Linnaeus. The dahlia flower is named after him. Early life and education Andreas (Anders) Dahl was the son of Christoffer Dahl, a preac ...

, Swedish botanist (died

1789 Events January–March * January – Emmanuel Joseph Sieyès publishes the pamphlet '' What Is the Third Estate?'' ('), influential on the French Revolution. * January 7 – The 1788-89 United States presidential election ...

) * June 3 or 29 –

William Roxburgh William Roxburgh FRSE FRCPE Linnean Society of London, FLS (3/29 June 1751 – 18 February 1815) was a Scottish people, Scottish surgeon and botanist who worked extensively in India, describing species and working on economic botany. He is known ...

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 ...

surgeon and botanist, "father of Indian botany" (died

1815 Events January * January 2 – Lord Byron marries Anna Isabella Milbanke in Seaham, county of Durham, England. * January 3 – Austria, Britain, and Bourbon-restored France form a secret defensive alliance treaty against Pr ...

) * July 1 –

Antide Janvier Antide Janvier (1 July 1751 – 23 September 1835) was a French clockmaker. Life Antide Janvier was born in a village in the Jura (département), Jura, and learned the basics of his trade from his father, and was educated in Latin, Greek ...

, French precision clockmaker (died

1835 Events January–March * January 7 – anchors off the Chonos Archipelago on her second voyage, with Charles Darwin on board as naturalist. * January 8 – The United States public debt contracts to zero, for the only time in history. ...

) * December 10 – George Shaw, English

naturalist Natural history is a domain of inquiry involving organisms, including animals, fungi, and plants, in their natural environment, leaning more towards observational than experimental methods of study. A person who studies natural history is cal ...

(died

1813 Events January–March * January 5 – The Danish state bankruptcy of 1813 occurs. * January 18– 23 – War of 1812: The Battle of Frenchtown is fought in modern-day Monroe, Michigan between the United States and a Britis ...

)

Deaths

* June 9 –

John Machin John Machin (bapt. c. 1686 – June 9, 1751)Anita McConnell, ‘Machin, John (bap. 1686?, died 1751)’, Oxford Dictionary of National Biography, Oxford University Press, 2004. Accessed 26 June 2007. was a professor of astronomy at Gresham ...

, English

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

astronomer An astronomer is a scientist in the field of astronomy who focuses on a specific question or field outside the scope of Earth. Astronomers observe astronomical objects, such as stars, planets, natural satellite, moons, comets and galaxy, galax ...

(born c.

1686 Events January–March * January 3 – In Madras (now Chennai) in India, local residents employed by the East India Company threaten to boycott their jobs after corporate administrator William Gyfford imposes a house tax on resid ...

) * August 22 – Andrew Gordon, Scottish-born Benedictine monk, physicist and inventor (born

1712 In the Swedish calendar it began as a leap year starting on Monday and remained so until Thursday, February 29. By adding a second leap day, Friday, February 30, Sweden reverted to the Julian calendar and the rest of the year (from Saturday, M ...

) * August 30 –

Christopher Polhem Christopher Polhammar (18 December 1661 – 30 August 1751) better known as Christopher Polhem (), which he took after his ennoblement in 1716, was a Swedish scientist, inventor, and industrialist. He made significant contributions to the econ ...

, Swedish scientist and inventor (born

1661 Events January–March * January 6 – The Fifth Monarchists, led by Thomas Venner, unsuccessfully attempt to seize control of London; George Monck's regiment defeats them. * January 29 – The Rokeby baronets, a Br ...

) * November 30 – Jean-Philippe de Cheseaux, Swiss mathematician and astronomer (born

1718 Events January – March * January 7 – In India, Sufi rebel leader Shah Inayat Shaheed from Sindh who had led attacks against the Mughal Empire, is beheaded days after being tricked into meeting with the Mughals to discuss ...

)

References

{{reflist 18th century in science 1750s in science