November 20th in stamps von Guericke, Carl Axel Arrhenius, Leo Tolstoy

Here are some events that happened on November 20th. It could be an event or a person that died or was born on that day

1602 – Otto von Guericke, German physicist and politician (d. 1686)

Otto von Guericke (November 20, 1602 – May 11, 1686 [Julian calendar]; November 30, 1602 – May 21, 1686 [Gregorian calendar]) was a German scientist, inventor, and politician. His major scientific achievements were the establishment of the physics of vacuums, the discovery of an experimental method for clearly demonstrating electrostatic repulsion, and his advocacy for the reality of "action at a distance" and of "absolute space".

He was also a very spiritual man in the Dionysiac tradition, as were many scientists of the Enlightenment, and connected the vacuum of space to an infinite divinity. Von Guericke described this duality "as something that ‘contains all things’ and is ‘more precious than gold...more joyous that the perception of bountiful light’ and ‘comparable to the heavens’."

German stamp depicting Otto von Guerick

1910 Died Leo Tolstoy, Russian author and playwright (b. 1828)

Count Lev Nikolayevich Tolstoy (9 September [O.S. 28 August] 1828 – 20 November [O.S. 7 November] 1910), usually referred to in English as Leo Tolstoy, was a Russian writer who is regarded as one of the greatest authors of all time. He received multiple nominations for Nobel Prize in Literature every year from 1902 to 1906, and nominations for Nobel Peace Prize in 1901, 1902 and 1910, and his miss of the prize is a major Nobel prize controversy.

Born to an aristocratic Russian family in 1828, he is best known for the novels War and Peace (1869) and Anna Karenina (1877), often cited as pinnacles of realist fiction. He first achieved literary acclaim in his twenties with his semi-autobiographical trilogy, Childhood, Boyhood, and Youth (1852–1856), and Sevastopol Sketches (1855), based upon his experiences in the Crimean War. Tolstoy's fiction includes dozens of short stories and several novellas such as The Death of Ivan Ilyich (1886), Family Happiness (1859), and Hadji Murad (1912). He also wrote plays and numerous philosophical essays.

October 29th in stamps International Red Cross, Joseph Pulitzer, Gustaf V of Sweden,

Here are some events that happened on October 29th. It could be an event or a person that died or was born on that day

1863 – Eighteen countries meet in Geneva and agree to form the International Red Cross.

The International Committee of the Red Cross (ICRC) is a humanitarian institution based in Geneva, Switzerland, and a three-time Nobel Prize Laureate. State parties (signatories) to the Geneva Convention of 1949 and its Additional Protocols of 1977 (Protocol I, Protocol II) and 2005 have given the ICRC a mandate to protect victims of international and internal armed conflicts. Such victims include war wounded, prisoners, refugees, civilians, and other non-combatants.

The ICRC is part of the International Red Cross and Red Crescent Movement along with the International Federation of Red Cross and Red Crescent Societies (IFRC) and 192 National Societies. It is the oldest and most honoured organization within the movement and one of the most widely recognized organizations in the world, having won three Nobel Peace Prizes in 1917, 1944, and 1963.

Up until the middle of the 19th century, there were no organized and well-established army nursing systems for casualties and no safe and protected institutions to accommodate and treat those who were wounded on the battlefield. In June 1859, the Swiss businessman Henry Dunant travelled to Italy to meet French emperor Napoléon III with the intention of discussing difficulties in conducting business in Algeria, at that time occupied by France. When he arrived in the small Italian town of Solferino on the evening of 24 June, he witnessed the aftermath of the Battle of Solferino, an engagement in the Second Italian War of Independence. In a single day, about 40,000 soldiers on both sides died or were left wounded on the field. Henry Dunant was shocked by the terrible aftermath of the battle, the suffering of the wounded soldiers, and the near-total lack of medical attendance and basic care. He completely abandoned the original intent of his trip and for several days he devoted himself to helping with the treatment and care for the wounded. He succeeded in organizing an overwhelming level of relief assistance by motivating the local population to aid without discrimination. Back in his home in Geneva, he decided to write a book entitled A Memory of Solferino which he published with his own money in 1862. He sent copies of the book to leading political and military figures throughout Europe. In addition to penning a vivid description of his experiences in Solferino in 1859, he explicitly advocated the formation of national voluntary relief organizations to help nurse wounded soldiers in the case of war. In addition, he called for the development of international treaties to guarantee the neutrality and protection of those wounded on the battlefield as well as medics and field hospitals.

Stamps from various countries issued to benefit the Red Cross

1911 Died: Joseph Pulitzer, Hungarian-American publisher, lawyer, and politician, founded Pulitzer, Inc. (b. 1847)

Joseph Pulitzer (April 10, 1847 – October 29, 1911) was a newspaper publisher of the St. Louis Post-Dispatch and the New York World. He became a leading national figure in the Democratic Party and was elected congressman from New York. He crusaded against big business and corruption, and helped keep the Statue of Liberty in New York.

In the 1890s the fierce competition between his World and William Randolph Hearst's New York Journal caused both to develop the techniques of yellow journalism, which won over readers with sensationalism, sex, crime and graphic horrors. The wide appeal reached a million copies a day and opened the way to mass-circulation newspapers that depended on advertising revenue (rather than cover price or political party subsidies) and appealed to readers with multiple forms of news, gossip, entertainment and advertising.

Today, his name is best known for the Pulitzer Prizes, which were established in 1917 as a result of his endowment to Columbia University. The prizes are given annually to recognize and reward excellence in American journalism, photography, literature, history, poetry, music and drama. Pulitzer founded the Columbia School of Journalism by his philanthropic bequest; it opened in 1912.


US stamp and First Day Cover issued to commemorate Joseph Pulitzer

1950 Died: Gustaf V of Sweden (b. 1858)

Gustaf V (Oscar Gustaf Adolf; 16 June 1858 – 29 October 1950) was King of Sweden from 1907 until his death in 1950. He was the eldest son of King Oscar II of Sweden and Sophia of Nassau, a half-sister of Adolphe, Grand Duke of Luxembourg. Reigning from the death of his father, Oscar II, in 1907 to his own death 43 years later, he holds the record of being the oldest monarch of Sweden and the third-longest rule, after Magnus IV and Carl XVI Gustaf. He was also the last Swedish monarch to exercise his royal prerogatives, which largely died with him, although they were formally abolished only with the remaking of the Swedish constitution in 1974. He was the first Swedish king since the High Middle Ages not to have a coronation and so never wore the king's crown, a practice that has continued ever since.

Gustaf's early reign saw the rise of parliamentary rule in Sweden although the leadup to World War I induced his dismissal of Liberal Prime Minister Karl Staaff in 1914, replacing him with his own figurehead, Hjalmar Hammarskjöld, the father of Dag Hammarskjöld, for most of the war. However, after the Liberals and Social Democrats secured a parliamentary majority under Staaff's successor, Nils Edén, he allowed Edén to form a new government which de facto stripped the monarchy of all virtual powers and enacted universal and equal suffrage, including for women, by 1919. Bowing fully to the principles of parliamentary democracy, he remained a popular figurehead for the remaining 31 years of his rule, although not completely without influence – during World War II he allegedly urged Per Albin Hansson's coalition government to accept requests from Nazi Germany for logistics support, refusing which might have provoked an invasion. This remains controversial to date, although he is not known to have shown much support for fascism or radical nationalism; his pro-German and anti-Communist stance was well known also in World War I.

Following his death at age 92, he was implicated in a homosexual affair in the Haijby affair. His alleged lover Kurt Haijby was imprisoned in 1952 for blackmail of the court in the 1930s. (Homosexuality was a criminal offense in Sweden until 1944, though Gustaf's position would have granted automatic immunity.) An avid hunter and sportsman, he presided over the 1912 Olympic Games and chaired the Swedish Association of Sports from 1897 to 1907. Most notably, he represented Sweden (under the alias of Mr G.) as a competitive tennis player, keeping up competitive tennis until his 80s, when his eyesight deteriorated rapidly. He died from flu complications and was succeeded by his son, Gustaf VI Adolf.

October 21st in stamps Navy frigate USS Constitution is launched, Alfred Nobel born, Columbian Exposition opening ceremonies

Here are some events that happened on October 21st. It could be an event or a person that died or was born on that day

1797 – In Boston Harbor, the 44-gun United States Navy frigate USS Constitution is launched.

USS Constitution, also known as Old Ironsides, is a wooden-hulled, three-masted heavy frigate of the United States Navy. She is the world's oldest commissioned naval vessel still afloat. She was launched in 1797, one of six original frigates authorized for construction by the Naval Act of 1794 and the third constructed. The name "Constitution" was among ten names submitted to President George Washington by Secretary of War Timothy Pickering in March of 1795 for the frigates that were to be constructed. Joshua Humphreys designed the frigates to be the young Navy's capital ships, and so Constitution and her sister ships were larger and more heavily armed and built than standard frigates of the period. She was built at Edmund Hartt's shipyard in the North End of Boston, Massachusetts. Her first duties were to provide protection for American merchant shipping during the Quasi-War with France and to defeat the Barbary pirates in the First Barbary War.

Constitution is most noted for her actions during the War of 1812 against the United Kingdom, when she captured numerous merchant ships and defeated five British warships: HMS Guerriere, Java, Pictou, Cyane, and Levant. The battle with Guerriere earned her the nickname "Old Ironsides" and public adoration that has repeatedly saved her from scrapping. She continued to serve as flagship in the Mediterranean and African squadrons, and she circled the world in the 1840s. During the American Civil War, she served as a training ship for the United States Naval Academy. She carried American artwork and industrial displays to the Paris Exposition of 1878.

Constitution was retired from active service in 1881 and served as a receiving ship until being designated a museum ship in 1907. In 1934, she completed a three-year, 90-port tour of the nation. She sailed under her own power for her 200th birthday in 1997, and again in August 2012 to commemorate the 200th anniversary of her victory over Guerriere.

Constitution's stated mission today is to promote understanding of the Navy's role in war and peace through educational outreach, historical demonstration, and active participation in public events as part of the Naval History & Heritage Command. As a fully commissioned Navy ship, her crew of 60 officers and sailors participate in ceremonies, educational programs, and special events while keeping her open to visitors year round and providing free tours. The officers and crew are all active-duty Navy personnel, and the assignment is considered to be special duty. She is usually berthed at Pier 1 of the former Charlestown Navy Yard at one end of Boston's Freedom Trail.

US stamps depicting Navy frigate USS Constitution

1833 Born: Alfred Nobel, Swedish chemist and engineer, invented dynamite and founded the Nobel Prize (d. 1896)

Alfred Bernhard Nobel (21 October 1833 – 10 December 1896) was a Swedish businessman, chemist, engineer, inventor, and philanthropist.

Nobel held 355 different patents, dynamite being the most famous. The synthetic element nobelium was named after him. 

Known for inventing dynamite, Nobel also owned Bofors, which he had redirected from its previous role as primarily an iron and steel producer to a major manufacturer of cannon and other armaments.

After reading a premature obituary which condemned him for profiting from the sales of arms, he bequeathed his fortune to institute the Nobel Prizes. His name also survives in modern-day companies such as Dynamit Nobel and AkzoNobel, which are descendants of mergers with companies Nobel himself established.

Stamps from Monaco, Germany and Sweden depicting Alfred Nobel

1892 – Opening ceremonies for the World's Columbian Exposition are held in Chicago, though because construction was behind schedule, the exposition did not open until May 1, 1893.

The World's Columbian Exposition (the official shortened name for the World's Fair: Columbian Exposition, also known as the Chicago World's Fair and Chicago Columbian Exposition) was a world's fair held in Chicago in 1893 to celebrate the 400th anniversary of Christopher Columbus's arrival in the New World in 1492. The centerpiece of the Fair, the large water pool, represented the long voyage Columbus took to the New World. Chicago had won the right to host the fair over several other cities, including New York City, Washington, D.C., and St. Louis. The Exposition was an influential social and cultural event and had a profound effect on architecture, sanitation, the arts, Chicago's self-image, and American industrial optimism.

Stamps from the Columbian Exposition Issue issued in 1893

October 12th in stamps Elizabeth Fry, Hiroshige, Edith Stein, Robert Stephenson, Anatole France

Here are some events that happened on October 12th. It could be an event or a person that died or was born on that day

1845 Died: Elizabeth Fry, English prison reformer, Quaker and philanthropist (b. 1780)

Elizabeth Fry (née Gurney; 21 May 1780 – 12 October 1845), sometimes referred to as Betsy Fry, was an English prison reformer, social reformer and, as a Quaker, a Christian philanthropist. She has been called the "angel of prisons".

Fry was a major driving force behind new legislation to make the treatment of prisoners more humane, and she was supported in her efforts by Queen Victoria. She was depicted on the Bank of England £5 note from 2001–2016. Fry kept extensive and revealing diaries.

Elizabeth Fry also helped the homeless, establishing a "nightly shelter" in London after seeing the body of a young boy in the winter of 1819/1820. In 1824, during a visit to Brighton, she instituted the Brighton District Visiting Society.  The society arranged for volunteers to visit the homes of the poor and provide help and comfort to them. The plan was successful and was duplicated in other districts and towns across Britain.

Elizabeth Fry used her influential network and worked with other prominent Quakers to campaign for the abolition of the slave trade.

After her husband went bankrupt in 1828, Fry's brother became her business manager and benefactor. Thanks to him, her work went on and expanded.

In 1838, the Friends sent a party to France. Fry and her husband, as well as Lydia Irving, and abolitionists Josiah Forster and William Allen were among the people sent. They were there on other business but despite the language barrier, Fry and Lydia Irving visited French prisons. 

In 1840 Fry opened a training school for nurses. Her programme inspired Florence Nightingale, who took a team of Fry's nurses to assist wounded soldiers in the Crimean War.

In 1842, Frederick William IV of Prussia went to see Fry in Newgate Prison during an official visit to Great Britain. The King of Prussia, who had met the social reformer during her previous tours of the continent promoting welfare change and humanitarianism, was so impressed by her work that he told his reluctant courtiers that he would personally visit the gaol when he was in London.

Stamps from Germany and Great Britain depicting Elizabeth Fry

1858 Died: Hiroshige, Japanese painter (b. 1797)

Utagawa Hiroshige (born Andō Hiroshige (安藤 広重; 1797 – 12 October 1858), was a Japanese ukiyo-e artist, considered the last great master of that tradition.

Hiroshige is best known for his horizontal-format landscape series The Fifty-three Stations of the Tōkaidō and for his vertical-format landscape series One Hundred Famous Views of Edo. The subjects of his work were atypical of the ukiyo-e genre, whose typical focus was on beautiful women, popular actors, and other scenes of the urban pleasure districts of Japan's Edo period (1603–1868). The popular series Thirty-six Views of Mount Fuji by Hokusai was a strong influence on Hiroshige's choice of subject, though Hiroshige's approach was more poetic and ambient than Hokusai's bolder, more formal prints. Subtle use of color was essential in Hiroshige's prints, often printed with multiple impressions in the same area and with extensive use of bokashi (color gradation), both of which were rather labor-intensive techniques.

For scholars and collectors, Hiroshige's death marked the beginning of a rapid decline in the ukiyo-e genre, especially in the face of the westernization that followed the Meiji Restoration of 1868. Hiroshige's work came to have a marked influence on western European painting towards the close of the 19th century as a part of the trend in Japonism. Western European artists, such as Manet and Monet, collected and closely studied Hiroshige's compositions. Vincent van Gogh even went so far as to paint copies of two of Hiroshige's prints from One Hundred Famous Views of Edo.

Japanese stamps depicting Hiroshige's works

1859  Died: Robert Stephenson, English railway and civil engineer (b. 1803)

Robert Stephenson (16 October 1803 – 12 October 1859) was an English railway and civil engineer. The only son of George Stephenson, the "Father of Railways", he built on the achievements of his father. Robert has been called the greatest engineer of the 19th century.

Stamp from Great Britain with a postmark to commemorate Robert Stephenson's 125 year death anniversary

1891 Born: Edith Stein, Polish nun and martyr; later canonized (d. 1942)

Edith Stein (religious name Teresia Benedicta a Cruce OCD; also known as St. Edith Stein or St. Teresa Benedicta of the Cross; 12 October 1891 – 9 August 1942) was a German Jewish philosopher who converted to Catholicism and became a Discalced Carmelite nun. She is canonized as a martyr and saint of the Catholic Church, and she is one of six co-patron saints of Europe.

She was born into an observant Jewish family, but had become an atheist by her teenage years. Moved by the tragedies of World War I, in 1915 she took lessons to become a nursing assistant and worked in an infectious diseases hospital. After completing her doctoral thesis from the University of Göttingen in 1916, she obtained an assistantship at the University of Freiburg.

From reading the works of the reformer of the Carmelite Order, Teresa of Ávila, she was drawn to the Catholic faith. She was baptized on 1 January 1922 into the Catholic Church. At that point, she wanted to become a Discalced Carmelite nun, but was dissuaded by her spiritual mentors. She then taught at a Catholic school of education in Speyer. As a result of the requirement of an "Aryan certificate" for civil servants promulgated by the Nazi government in April 1933 as part of its Law for the Restoration of the Professional Civil Service, she had to quit her teaching position.

She was admitted to the Discalced Carmelite monastery in Cologne the following October. She received the religious habit of the Order as a novice in April 1934, taking the religious name Teresa Benedicta of the Cross. In 1938, she and her sister Rosa, by then also a convert and an extern sister (tertiaries of the Order, who would handle the community′s needs outside the monastery), were sent to the Carmelite monastery in Echt, Netherlands, for their safety. Despite the Nazi invasion of that state in 1940, they remained undisturbed until they were arrested by the Nazis on 2 August 1942 and sent to the Auschwitz concentration camp, where they are alleged to have died in the gas chamber on 9 August 1942.

German stamps depicting Edith Stein

1924 Died: Anatole France, French journalist, novelist, and poet, Nobel Prize laureate (b. 1844)

Anatole France (born François-Anatole Thibault, 16 April 1844 – 12 October 1924) was a French poet, journalist, and novelist with several best-sellers. Ironic and skeptical, he was considered in his day the ideal French man of letters. He was a member of the Académie française, and won the 1921 Nobel Prize in Literature "in recognition of his brilliant literary achievements, characterized as they are by a nobility of style, a profound human sympathy, grace, and a true Gallic temperament".

France is also widely believed to be the model for narrator Marcel's literary idol Bergotte in Marcel Proust's In Search of Lost Time.

French and Swedish stamps depicting Anatole France 

September 19th in stamps James A. Garfield, Porsche, King Carl XVI Gustaf of Sweden, Ole Rømer

Here are some events that happened on September 19th. It could be an event or a person that died or was born on that day

1710 Died: Ole Rømer, Danish astronomer and instrument maker (b. 1644)

Ole Christensen Rømer (25 September 1644 – 19 September 1710) was a Danish astronomer who, in 1676, made the first quantitative measurements of the speed of light.

Rømer also invented the modern thermometer showing the temperature between two fixed points, namely the points at which water respectively boils and freezes.

In addition to inventing the first street lights in Copenhagen, Rømer also invented the meridian circle, the altazimuth, and the passage instrument (also known as the transit instrument, a type of meridian circle whose horizontal axis is not fixed in the east-west direction).

In scientific literature, alternative spellings such as "Roemer", "Römer", or "Romer" are common.

Danish stamp depicting Ole Rømer

1881 Died: James A. Garfield, American general, lawyer, and politician, and the 20th President of the United States (b. 1831)

James Abram Garfield (November 19, 1831 – September 19, 1881) was the 20th president of the United States, serving from March 4, 1881, until his death by assassination six and a half months later. He is the only sitting member of the United States House of Representatives to be elected to the presidency.

Garfield entered politics as a Republican in 1857. He served as a member of the Ohio State Senate from 1859 to 1861. Garfield opposed Confederate secession, served as a major general in the Union Army during the American Civil War, and fought in the battles of Middle Creek, Shiloh, and Chickamauga. He was first elected to Congress in 1862 to represent Ohio's 19th district. Throughout Garfield's congressional service after the war, he firmly supported the gold standard and gained a reputation as a skilled orator. He initially agreed with Radical Republican views on Reconstruction, but later favored a moderate approach to civil rights enforcement for freedmen.

At the 1880 Republican National Convention, delegates chose Garfield, who had not sought the White House, as a compromise presidential nominee on the 36th ballot. In the 1880 presidential election, he conducted a low-key front porch campaign and narrowly defeated Democrat Winfield Scott Hancock. Garfield's accomplishments as president included a resurgence of presidential authority against senatorial courtesy in executive appointments, purging corruption in the Post Office, and appointing a U.S. Supreme Court justice. He enhanced the powers of the presidency when he defied the powerful New York senator Roscoe Conkling by appointing William H. Robertson to the lucrative post of Collector of the Port of New York, starting a fracas that ended with Robertson's confirmation and Conkling's resignation from the Senate. Garfield advocated agricultural technology, an educated electorate, and civil rights for African Americans. He also proposed substantial civil service reforms, which were passed by Congress in 1883 and signed into law by his successor, Chester A. Arthur, as the Pendleton Civil Service Reform Act.

On July 2, 1881, Charles J. Guiteau, a disappointed and delusional office seeker, shot Garfield at the Baltimore and Potomac Railroad Station in Washington D.C. The wound was not immediately fatal, but he died on September 19, 1881, from infections caused by his doctors. Guiteau was executed for Garfield's murder in June 1882.

US stamps depicting James A. Garfield

1909 Born: Ferdinand Porsche, Austrian engineer and businessman (d. 1998)

Ferdinand Porsche (3 September 1875 – 30 January 1951) was an Austrian automotive engineer and founder of the Porsche car company. He is best known for creating the first gasoline-electric hybrid vehicle (Lohner-Porsche), the Volkswagen Beetle, the Mercedes-Benz SS/SSK, several other important developments and Porsche automobiles.

An important contributor to the German war effort during World War II, Porsche was involved in the production of advanced tanks such as the VK 4501 (P), Tiger I, Tiger II, Elefant, and Panzer VIII Maus, as well as other weapon systems, including the V-1 flying bomb. Porsche was a member of the Nazi Party, and was called the "Great German Engineer" by Nazi officials. He was a recipient of the German National Prize for Art and Science, the SS-Ehrenring and the War Merit Cross.

Porsche was inducted into the International Motorsports Hall of Fame in 1996 and won the Car Engineer of the Century award in 1999

Some stamps depicting Ferdinand Porsche or the Porsche car

1973 – King Carl XVI Gustaf of Sweden has his investiture.

Carl XVI Gustaf (Carl Gustaf Folke Hubertus; born 30 April 1946) is the King of Sweden. He ascended the throne on the death of his grandfather, King Gustaf VI Adolf, on 15 September 1973.

He is the youngest child and only son of Prince Gustaf Adolf, Duke of Västerbotten, and Princess Sibylla of Saxe-Coburg and Gotha. His father died on 26 January 1947 in an airplane crash in Denmark when Carl Gustaf was nine months old. Upon his father's death, he became second in line to the throne, after his grandfather, the then Crown Prince Gustaf Adolf. Following the death of his great-grandfather King Gustaf V in 1950, Gustaf Adolf ascended the throne and thus Carl Gustaf became Sweden's new crown prince and heir apparent to the throne at the age of four.

A short while after he became king in 1973, the new 1974 Instrument of Government took effect, formally stripping Carl XVI Gustaf of even a nominal role in governmental affairs. As a result, he no longer performs many of the duties normally accorded to a head of state, such as the formal appointment of the prime minister, signing off on legislation, and being commander-in-chief of the nation's military. The new instrument explicitly limits the king to ceremonial functions and, among other things, to be regularly informed of affairs of state. As head of the House of Bernadotte Carl Gustaf has also been able to make a number of decisions about the titles and positions of its members.

The king's heir apparent, after passage on 1 January 1980 of a new law establishing absolute primogeniture (the first such law passed in Western European history), is Crown Princess Victoria, the eldest child of the King and his wife, Queen Silvia. Before the passage of that law, Crown Princess Victoria's younger brother, Prince Carl Philip, was briefly the heir apparent, as of his birth in May 1979.

Carl XVI Gustaf is the longest-reigning monarch in Swedish history, having surpassed King Magnus IV's reign of 44 years and 222 days on 26 April 2018.

Swedish stamps depicting Carl XVI Gustaf

September 18th in stamps Leonhard Euler, Oscar II, Royal Opera House in London opens, Léon Foucault

Here are some events that happened on September 18th. It could be an event or a person that died or was born on that day

1783 Died: Leonhard Euler, Swiss mathematician and physicist (b. 1707)

Leonhard Euler (15 April 1707 – 18 September 1783) was a Swiss mathematician, physicist, astronomer, geographer, logician and engineer who made important and influential discoveries in many branches of mathematics, such as infinitesimal calculus and graph theory, while also making pioneering contributions to several branches such as topology and analytic number theory. He also introduced much of the modern mathematical terminology and notation, particularly for mathematical analysis, such as the notion of a mathematical function. He is also known for his work in mechanics, fluid dynamics, optics, astronomy and music theory. 

Euler was one of the most eminent mathematicians of the 18th century and is held to be one of the greatest in history. He is also widely considered to be the most prolific, as his collected works fill 92 volumes, more than anyone else in the field. He spent most of his adult life in Saint Petersburg, Russia, and in Berlin, then the capital of Prussia.

Stamps from East Germany and Switzerland depicting Leonhard Euler

1809 – The Royal Opera House in London opens.

The Royal Opera House (ROH) is an opera house and major performing arts venue in Covent Garden, central London. The large building is often referred to as simply "Covent Garden", after a previous use of the site of the opera house's original construction in 1732. It is the home of The Royal Opera, The Royal Ballet, and the Orchestra of the Royal Opera House. Originally called the Theatre Royal, it served primarily as a playhouse for the first hundred years of its history. In 1734, the first ballet was presented. A year later, Handel's first season of operas began. Many of his operas and oratorios were specifically written for Covent Garden and had their premieres there.

The current building is the third theatre on the site following disastrous fires in 1808 and 1856. The façade, foyer, and auditorium date from 1858, but almost every other element of the present complex dates from an extensive reconstruction in the 1990s. The main auditorium seats 2,256 people, making it the third largest in London, and consists of four tiers of boxes and balconies and the amphitheatre gallery. The proscenium is 12.20 m wide and 14.80 m high. The main auditorium is a Grade I listed building.

Stamp from Great Britain depicting the Royal Opera House

1819 Born: Léon Foucault, French physicist and academic (d. 1868)

Jean Bernard Léon Foucault (18 September 1819 – 11 February 1868) was a French physicist best known for his demonstration of the Foucault pendulum, a device demonstrating the effect of the Earth's rotation. He also made an early measurement of the speed of light, discovered eddy currents, and is credited with naming the gyroscope.

Foucault died of what was probably a rapidly developing case of multiple sclerosis on 11 February 1868 in Paris and was buried in the Montmartre Cemetery.

The asteroid 5668 Foucault was named for him.[10] His is one of the 72 names inscribed on the Eiffel Tower.

1872 – King Oscar II accedes to the throne of Sweden–Norway.

Oscar II (Oscar Fredrik; 21 January 1829 – 8 December 1907) was the King of Sweden from 1872 until his death, and was also the final King of Norway from the House of Bernadotte until being deposed in 1905.

Oscar II was King during a time when both Sweden and Norway were undergoing a period of industrialization and rapid technological progress. His reign also saw the gradual decline of the Union of Sweden and Norway, which culminated in its dissolution in 1905. He was subsequently succeeded as King of Norway by his grandnephew Prince Carl of Denmark under the regnal name Haakon VII, and as King of Sweden by his eldest son, Gustaf V.

Oscar II is the paternal great-great-grandfather of Carl XVI Gustaf, King of Sweden since 1973. Harald V, King of Norway since 1991, is a great-grandson of Oscar II, through his third son Prince Carl, Duke of Västergötland.

Swedish stamps depicting Oscar II