The year 1804 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, listed below.

Astronomy and space science

* April 5 –

High Possil meteorite High may refer to: Science and technology * Height * High (atmospheric), a high-pressure area * High (computability), a quality of a Turing degree, in computability theory * High (tectonics), in geology an area where relative tectonic uplift to ...

, the first recorded

meteorite A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or moon. When the original object en ...

to fall in

Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to th ...

in modern times, falls at Possil. * September 1 – Karl Ludwig Harding discovers the

asteroid An asteroid is a minor planet of the Solar System#Inner solar system, inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic o ...

Juno Juno commonly refers to: * Juno (mythology), the Roman goddess of marriage and queen of the gods * ''Juno'' (film), 2007 Juno may also refer to: Arts, entertainment and media Fictional characters *Juno, in the film ''Jenny, Juno'' *Juno, in the ...

Botany

* March 7 – John Wedgwood founds the

Horticultural Society of London The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity. The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr (Nort ...

. * Jacques-Julien Labillardière begins publication of '' Novæ Hollandiæ Plantarum Specimen'' in

Paris Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. ...

, the first

flora Flora (: floras or florae) is all the plant life present in a particular region or time, generally the naturally occurring (indigenous (ecology), indigenous) native plant, native plants. The corresponding term for animals is ''fauna'', and for f ...

of Australia. * Publication in Paris of Nicolas-Théodore de Saussure's collected papers ''Recherches chimiques sur la végétation'', outlining the basic reaction of

photosynthesis Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities. Some of this chemical energy is stored i ...

. * Publication in London of Maria Elizabetha Jacson's ''Botanical Lectures by a Lady''.

Chemistry

William Hyde Wollaston William Hyde Wollaston (; 6 August 1766 – 22 December 1828) was an English chemist and physicist who is famous for discovering the chemical elements palladium and rhodium. He also developed a way to process platinum ore into malleable in ...

discovers how to make malleable

platinum Platinum is a chemical element with the symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish , a diminutive of "silver". Pla ...

. * German pharmacist Friedrich Sertürner first isolates

morphine Morphine is a strong opiate that is found naturally in opium, a dark brown resin in poppies ('' Papaver somniferum''). It is mainly used as a pain medication, and is also commonly used recreationally, or to make other illicit opioids. Ther ...

from

opium Opium (or poppy tears, scientific name: ''Lachryma papaveris'') is dried latex obtained from the seed capsules of the opium poppy '' Papaver somniferum''. Approximately 12 percent of opium is made up of the analgesic alkaloid morphine, which ...

, probably the first ever isolation of a natural plant

alkaloid Alkaloids are a class of basic BASIC (Beginners' All-purpose Symbolic Instruction Code) is a family of general-purpose, high-level programming languages designed for ease of use. The original version was created by John G. Kemeny and Th ...

Exploration

* May 14 – The

Lewis and Clark Expedition The Lewis and Clark Expedition, also known as the Corps of Discovery Expedition, was the United States expedition to cross the newly acquired western portion of the country after the Louisiana Purchase. The Corps of Discovery was a select gr ...

departs from Camp Dubois and begin their historic journey by traveling up the Missouri River.

Geology

Alexander von Humboldt Friedrich Wilhelm Heinrich Alexander von Humboldt (14 September 17696 May 1859) was a German polymath, geographer, naturalist, explorer, and proponent of Romantic philosophy and science. He was the younger brother of the Prussian minister, ...

discovers that the Earth's magnetic field decreases from the poles to the equator.

Medicine

* October 13 – In Japan,

Hanaoka Seishū was a Japanese surgeon of the Edo period with a knowledge of Chinese herbal medicine, as well as Western surgical techniques he had learned through ''Rangaku'' (literally "Dutch learning", and by extension "Western learning"). Hanaoka is said ...

(華岡青洲) performs a partial

mastectomy Mastectomy is the medical term for the surgical removal of one or both breasts, partially or completely. A mastectomy is usually carried out to treat breast cancer. In some cases, women believed to be at high risk of breast cancer have the operat ...

for

breast cancer Breast cancer is cancer that develops from breast tissue. Signs of breast cancer may include a lump in the breast, a change in breast shape, dimpling of the skin, milk rejection, fluid coming from the nipple, a newly inverted nipple, or ...

on a 60-year-old woman named Kan Aiya, using tsūsensan as a

general anesthetic General anaesthetics (or anesthetics, see spelling differences) are often defined as compounds that induce a loss of consciousness in humans or loss of righting reflex in animals. Clinical definitions are also extended to include an induced coma ...

, generally regarded as the first reliably documented operation performed under general anesthesia. * Publication of ''The Anatomy of the Human Body, vol. 3, Nervous System'' by

Charles Bell Sir Charles Bell (12 November 177428 April 1842) was a Scottish surgeon, anatomist, physiologist, neurologist, artist, and philosophical theologian. He is noted for discovering the difference between sensory nerves and motor nerves in the spi ...

. * Antonio Scarpa publishes ''Riflessioni ed Osservazione anatomico-chirugiche sull' Aneurisma'', a classic text on aneurisms.

Meteorology

Joseph Louis Gay-Lussac Joseph Louis Gay-Lussac (, , ; 6 December 1778 – 9 May 1850) was a French chemist and physicist. He is known mostly for his discovery that water is made of two parts hydrogen and one part oxygen (with Alexander von Humboldt), for two laws ...

and

Jean Baptiste Biot Jean-Baptiste Biot (; ; 21 April 1774 – 3 February 1862) was a French physicist, astronomer, and mathematician who co-discovered the Biot–Savart law of magnetostatics with Félix Savart, established the reality of meteorites, made an earl ...

study the atmosphere from a hot-air balloon.

Paleontology

James Parkinson James Parkinson (11 April 175521 December 1824) was an English surgeon, apothecary, geologist, palaeontologist and political activist. He is best known for his 1817 work ''An Essay on the Shaking Palsy'', in which he was the first to describe ...

publishes the first volume of ''Organic Remains of a Former World'', supporting belief in

Catastrophism In geology, catastrophism theorises that the Earth has largely been shaped by sudden, short-lived, violent events, possibly worldwide in scope. This contrasts with uniformitarianism (sometimes called gradualism), according to which slow incrementa ...

Technology

* February 21 – The

Cornishman The Cornish people or Cornish ( kw, Kernowyon, ang, Cornƿīelisċ) are an ethnic group native to, or associated with Cornwall: and a recognised national minority in the United Kingdom, which can trace its roots to the ancient Britons ...

Richard Trevithick Richard Trevithick (13 April 1771 – 22 April 1833) was a British inventor and mining engineer. The son of a mining captain, and born in the mining heartland of Cornwall, Trevithick was immersed in mining and engineering from an early age. He ...

's newly built "Penydarren"

steam locomotive A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, oil or, rarely, wood) to heat water in the loco ...

operates on the Merthyr Tramroad between

Penydarren Ironworks Penydarren Ironworks was the fourth of the great ironworks established at Merthyr Tydfil in South Wales. Built in 1784 by the brothers Samuel Homfray, Jeremiah Homfray, and Thomas Homfray, all sons of Francis Homfray of Stourbridge. Their ...

Merthyr Tydfil Merthyr Tydfil (; cy, Merthyr Tudful ) is the main town in Merthyr Tydfil County Borough, Wales, administered by Merthyr Tydfil County Borough Council. It is about north of Cardiff. Often called just Merthyr, it is said to be named after Ty ...

and

Abercynon Abercynon (), is both a village and a community (and electoral ward) in the Cynon Valley within the unitary authority of Rhondda Cynon Taf, Wales. The community comprises the village and the districts of Carnetown and Grovers Field to the south, ...

South Wales South Wales ( cy, De Cymru) is a loosely defined region of Wales bordered by England to the east and mid Wales to the north. Generally considered to include the historic counties of Glamorgan and Monmouthshire, south Wales extends westwards ...

, following several trials since February 13, the world's first locomotive to work on rails. * The first

Burr Truss The Burr Arch Truss—or, simply, Burr Truss or Burr Arch—is a combination of an arch and a ''multiple kingpost'' truss design. It was invented in 1804 by Theodore Burr, patented on April 3, 1817, and used in bridges, usually covered bridge ...

bridge is built by

Theodore Burr Theodore Burr (August 16, 1771 – November 22, 1822) was an inventor from Torrington, Connecticut, who was credited with the Burr Arch Truss bridge design. He designed and built one of the first bridges across the Hudson River and several b ...

across the

Hudson River The Hudson River is a river that flows from north to south primarily through eastern New York. It originates in the Adirondack Mountains of Upstate New York and flows southward through the Hudson Valley to the New York Harbor between Ne ...

Waterford, New York Waterford is a town in Saratoga County, New York, United States. The population was 8,423 at the 2010 census. The name of the town is derived from its principal village, also called Waterford. The town is located in the southeast corner of Sara ...

. *

William Congreve William Congreve (24 January 1670 – 19 January 1729) was an English playwright and poet of the Restoration period. He is known for his clever, satirical dialogue and influence on the comedy of manners style of that period. He was also a mi ...

begins development of the solid-fuel

Congreve rocket The Congreve rocket was a type of rocket artillery designed by British inventor Sir William Congreve in 1808. The design was based upon the rockets deployed by the Kingdom of Mysore against the East India Company during the Second, Third ...

as an artillery weapon. * The

British Army The British Army is the principal land warfare force of the United Kingdom, a part of the British Armed Forces along with the Royal Navy and the Royal Air Force. , the British Army comprises 79,380 regular full-time personnel, 4,090 Gur ...

first uses

shrapnel shell Shrapnel shells were anti-personnel artillery munitions which carried many individual bullets close to a target area and then ejected them to allow them to continue along the shell's trajectory and strike targets individually. They relied almo ...

s ("spherical case shot"), invented by Major

Henry Shrapnel Lieutenant General Henry Shrapnel (3 June 1761 – 13 March 1842) was a British Army officer whose name has entered the English language as the inventor of the shrapnel shell. Henry Shrapnel was born at Midway Manor in Bradford-on-Avon, Wiltshir ...

, in action, against the Dutch in

Suriname Suriname (; srn, Sranankondre or ), officially the Republic of Suriname ( nl, Republiek Suriname , srn, Ripolik fu Sranan), is a country on the northeastern Atlantic coast of South America. It is bordered by the Atlantic Ocean to the north ...

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 ...

Smithson Tennant Smithson Tennant FRS (30 November 1761 – 22 February 1815) was an English chemist. He is best known for his discovery of the elements iridium and osmium, which he found in the residues from the solution of platinum ores in 1803. He also co ...

Births

* February 12 –

Heinrich Lenz Heinrich Friedrich Emil Lenz (; ; also Emil Khristianovich Lenz, russian: Эмилий Христианович Ленц; 12 February 1804 – 10 February 1865), usually cited as Emil Lenz or Heinrich Lenz in some countries, was a Russian physic ...

, Russian-born Baltic German

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 ...

(died

1865 Events January–March * January 4 – The New York Stock Exchange opens its first permanent headquarters at 10-12 Broad near Wall Street, in New York City. * January 13 – American Civil War : Second Battle of Fort Fisher ...

) * February 18 – Baron Carl von Rokitansky, Bohemian

pathologist Pathology is the study of the causes and effects of disease or injury. The word ''pathology'' also refers to the study of disease in general, incorporating a wide range of biology research fields and medical practices. However, when used in t ...

(died

1878 Events January–March * January 5 – Russo-Turkish War – Battle of Shipka Pass IV: Russian and Bulgarian forces defeat the Ottoman Empire. * January 9 – Umberto I becomes King of Italy. * January 17 – Battle ...

) * March 8 –

Alvan Clark Alvan Clark (March 8, 1804 – August 19, 1887), born in Ashfield, Massachusetts, the descendant of a Cape Cod whaling family of English ancestry, was an American astronomer and telescope maker. Biography He started as a portrait painter and engra ...

, American telescope manufacturer (died

1887 Events January–March * January 11 – Louis Pasteur's anti-rabies treatment is defended in the Académie Nationale de Médecine, by Dr. Joseph Grancher. * January 20 ** The United States Senate allows the Navy to lease Pearl Har ...

) * April 5 **

Mary Philadelphia Merrifield Mary Philadelphia Merrifield (née Watkins; 15 April 1804 – 4 January 1889) was a British writer on art and fashion. She later became an algologist (an expert on seaweed). Life She was born Mary Philadelphia Watkins in Brompton, London in 18 ...

, née Watkins,

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 ...

fashion writer and algologist (died

1889 Events January–March * January 1 ** The total solar eclipse of January 1, 1889 is seen over parts of California and Nevada. ** Paiute spiritual leader Wovoka experiences a vision, leading to the start of the Ghost Dance movement in th ...

) ** Matthias Schleiden,

German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...

botanist (died 1881) * May 4 – Margaretta Riley, English pteridologist (died

1899 Events January 1899 * January 1 ** Spanish rule ends in Cuba, concluding 400 years of the Spanish Empire in the Americas. ** Queens and Staten Island become administratively part of New York City. * January 2 – **Bolivia sets up a ...

) * May 9 – Hewett Watson, English biologist (died 1881) * May 13 – Janet Taylor, née Jane Ann Ionn, English mathematician and navigational instrument maker (died

1870 Events January–March * January 1 ** The first edition of ''The Northern Echo'' newspaper is published in Priestgate, Darlington, England. ** Plans for the Brooklyn Bridge are completed. * January 3 – Construction of the B ...

) * June 5 – Robert Schomburgk, German-born explorer (died

) * July 20 –

Richard Owen Sir Richard Owen (20 July 1804 – 18 December 1892) was an English biologist, comparative anatomist and paleontologist. Owen is generally considered to have been an outstanding naturalist with a remarkable gift for interpreting fossils. Ow ...

, English anatomist and paleontologist (died 1892) * September 14 –

John Gould John Gould (; 14 September 1804 – 3 February 1881) was an English ornithologist. He published a number of monographs on birds, illustrated by plates produced by his wife, Elizabeth Gould, and several other artists, including Edward Lear, ...

, English

ornithologist Ornithology is a branch of zoology that concerns the "methodological study and consequent knowledge of birds with all that relates to them." Several aspects of ornithology differ from related disciplines, due partly to the high visibility and th ...

(died 1881) * September 16 –

Squire Whipple Squire Whipple (September 16, 1804 – March 15, 1888) was an American civil engineer. Biography Squire Whipple was born in Hardwick, Massachusetts on September 16, 1804. His family moved to New York when he was thirteen. He received his sec ...

, American civil engineer (died

1888 In Germany, 1888 is known as the Year of the Three Emperors. Currently, it is the year that, when written in Roman numerals, has the most digits (13). The next year that also has 13 digits is the year 2388. The record will be surpassed as late ...

) * October 1 – William Stokes, Irish physician (died 1878) * October 24 –

Wilhelm Eduard Weber Wilhelm Eduard Weber (; ; 24 October 1804 – 23 June 1891) was a German physicist and, together with Carl Friedrich Gauss, inventor of the first electromagnetic telegraph. Biography of Wilhelm Early years Weber was born in Schlossstrasse in ...

, German physicist (died

1891 Events January–March * January 1 ** Paying of old age pensions begins in Germany. ** A strike of 500 Hungarian steel workers occurs; 3,000 men are out of work as a consequence. **Germany takes formal possession of its new Africa ...

) * December 10 –

Carl Gustav Jacob Jacobi Carl Gustav Jacob Jacobi (; ; 10 December 1804 – 18 February 1851) was a German mathematician who made fundamental contributions to elliptic functions, dynamics, differential equations, determinants, and number theory. His name is occasio ...

, German mathematician (died

1851 Events January–March * January 11 – Hong Xiuquan officially begins the Taiping Rebellion. * January 15 – Christian Female College, modern-day Columbia College, receives its charter from the Missouri General Assembly. ...

) * December 24 – Édouard Chassaignac, French surgeon (died

1879 Events January–March * January 1 – The Specie Resumption Act takes effect. The United States Note is valued the same as gold, for the first time since the American Civil War. * January 11 – The Anglo-Zulu War begins. * Janu ...

)

Deaths

* February 6 –

Joseph Priestley Joseph Priestley (; 24 March 1733 – 6 February 1804) was an English chemist, natural philosopher, separatist theologian, grammarian, multi-subject educator, and liberal political theorist. He published over 150 works, and conducted e ...

, English chemist (born

1733 Events January–March * January 13 – Borommarachathirat V becomes King of Siam (now Thailand) upon the death of King Sanphet IX. * January 27 – George Frideric Handel's classic opera, ''Orlando'' is performed for the ...

) * March 26 – Wolfgang von Kempelen, Hungarian inventor (born

1734 Events January– March * January 8 – Salzburgers, Lutherans who were expelled by the Roman Catholic Bishop of Salzburg, Austria, in October 1731, set sail for the British Colony of Georgia in America. * February 16 – T ...

) * August 30 –

Thomas Percival Thomas Percival (29 September 1740 – 30 August 1804) was an English physician, health reformer, ethicist and author who wrote an early code of medical ethics. He drew up a pamphlet with the code in 1794 and wrote an expanded version in 180 ...

, English reforming physician and medical ethicist (born

1740 Events January–March * January 8 – All 237 crewmen on the Dutch East India Company ship '' Rooswijk'' are drowned, when the vessel strikes the shoals of Goodwin Sands, off of the coast of England, as it is beginning its sec ...

) * September 20 –

Pierre Méchain Pierre François André Méchain (; 16 August 1744 – 20 September 1804) was a French astronomer and surveyor who, with Charles Messier, was a major contributor to the early study of deep-sky objects and comets. Life Pierre Méchain was bo ...

, French astronomer (born

1744 Events January–March * January 6 – The Royal Navy ship ''Bacchus'' engages the Spanish Navy privateer ''Begona'', and sinks it; 90 of the 120 Spanish sailors die, but 30 of the crew are rescued. * January 24 – The Dag ...

) * October 2 –

Nicolas-Joseph Cugnot Nicolas-Joseph Cugnot (26 February 1725 – 2 October 1804) was a French inventor who built the world's first full-size and working self-propelled mechanical land-vehicle, the "Fardier à vapeur" – effectively the world's first automobile. B ...

, French mechanical engineer (born

1725 Events January–March * January 15 – James Macrae, a former captain of a freighter for the British East India Company, is hired by the Company to administer the Madras Presidency (at the time, the "Presidency of Fort St. Ge ...

) * November 5 - Louis Lépecq de La Clôture, French epidemiologist (born

1736 Events January–March * January 12 – George Hamilton, 1st Earl of Orkney, becomes the first Field Marshal of Great Britain. * January 23 – The Civil Code of 1734 is passed in Sweden. * January 26 – Stanislaus I of P ...

)

References

{{reflist 19th century in science 1800s in science