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21 November
Events Pre-1600 *164 BCE – Judas Maccabeus, son of Mattathias of the Hasmonean family, rededicates the Temple in Jerusalem, an event is commemorated each year by the festival of Hanukkah. (25 Kislev 3597 in the Hebrew calendar.) * 235 – Pope Anterus succeeds Pontian as the nineteenth pope. *1386 – Timur of Samarkand captures and sacks the Georgian capital of Tbilisi, taking King Bagrat V of Georgia captive. 1601–1900 *1620 – Plymouth Colony settlers sign the Mayflower Compact (November 11, O.S.) *1676 – The Danish astronomer Ole Rømer presents the first quantitative measurements of the speed of light. *1783 – In Paris, Jean-François Pilâtre de Rozier and François Laurent d'Arlandes make the first untethered hot air balloon flight. *1789 – North Carolina ratifies the United States Constitution and is admitted as the 12th U.S. state. * 1851 – Mutineers take control of the Chilean penal colony of Punta Arenas in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
164 BCE
__NOTOC__ Year 164 BC was a year of the Roman calendar, pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Torquatus and Longinus (or, less frequently, year 590 ''Ab urbe condita''). The denomination 164 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Egypt * The Ancient Egypt, Egyptian King Ptolemy VI Philometor is expelled from Alexandria by his brother Ptolemy VIII Euergetes and flees to Roman Republic, Rome to seek support. Seleucid Empire * The Seleucid king Antiochus IV Epiphanes dies while on a campaign in Tabae (or Gabae, now Isfahan) in Iran, Persia. He is succeeded by his son Antiochus V Eupator who is only nine years old. The regent for the boy is the late king's chancellor, Lysias (Syrian chancellor), Lysias, who was left in charge of Syria when Antiochus IV departed for his campaign in Persia. Lysias is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1620
Events January–June * February 4 – Prince Bethlen Gabor signs a peace treaty with Ferdinand II, Holy Roman Emperor. * May 17 – The first merry-go-round is seen at a fair (Philippapolis, Turkey). * June 3 – The oldest stone church in French North America, Notre-Dame-des-Anges, is begun at Quebec City, Canada. July–December * July 3 ** Under the terms of the Treaty of Ulm, the Protestant Union declares neutrality and ceases to support Frederick V of Bohemia. ** Captain Andrew Shilling, on behalf of the English Honourable East India Company, lays claim to Table Bay in Africa. * July 25 (July 15 OS) – The armed merchant ship ''Mayflower'' embarks about 65 emigrants for New England at or near her home port of Rotherhithe on the Thames east of London; about July 29 (July 19 OS) she anchors in Southampton Water. * August 1 (July 22 OS) – The ship '' Speedwell'' departs Delfshaven with English separatist Puritans from Leid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-François Pilâtre De Rozier
Jean-François Pilâtre de Rozier () was a French chemistry and physics teacher, and one of the first pioneers of aviation. He made the first manned free balloon flight with François Laurent d'Arlandes on 21 November 1783, in a Montgolfier balloon. He later died when his balloon crashed near Wimereux in the Pas-de-Calais during an attempt to fly across the English Channel. His companion Pierre Romain and he thus became the first known fatalities in an air crash. Early life He was born in Metz, the third son of Magdeleine Wilmard and Mathurin Pilastre, known as "de Rozier", a former soldier who became an innkeeper. His interests in the chemistry of drugs had been awakened in the military hospital of Metz, an important garrison town on the border of France. He made his way to Paris at the age of 18, then taught physics and chemistry at the Academy in Reims, which brought him to the attention of the Comte de Provence, brother of King Louis XVI. He returned to Paris, where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1783
Events January–March * January 20 – At Versailles, Great Britain signs preliminary peace treaties with the Kingdom of France and the Kingdom of Spain. * January 23 – The Confederation Congress ratifies two October 8, 1782, treaties signed by the United States with the United Netherlands. * February 3 – American Revolutionary War: Great Britain acknowledges the independence of the United States of America. At this time, the Spanish government does not grant diplomatic recognition. * February 4 – American Revolutionary War: Great Britain formally declares that it will cease hostilities with the United States. * February 5 – 1783 Calabrian earthquakes: The first of a sequence of five earthquakes strikes Calabria, Italy (February 5–7, March 1 & 28), leaving 50,000 dead. * February 7 – The Great Siege of Gibraltar is abandoned. * February 26 – The United States Continental Army's Corps of Engineers is disbanded. * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speed Of Light
The speed of light in vacuum, commonly denoted , is a universal physical constant that is important in many areas of physics. The speed of light is exactly equal to ). According to the special theory of relativity, is the upper limit for the speed at which conventional matter or energy (and thus any signal carrying information) can travel through space. All forms of electromagnetic radiation, including visible light, travel at the speed of light. For many practical purposes, light and other electromagnetic waves will appear to propagate instantaneously, but for long distances and very sensitive measurements, their finite speed has noticeable effects. Starlight viewed on Earth left the stars many years ago, allowing humans to study the history of the universe by viewing distant objects. When communicating with distant space probes, it can take minutes to hours for signals to travel from Earth to the spacecraft and vice versa. In computing, the speed of light fixes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Measurement
Measurement is the quantification of attributes of an object or event, which can be used to compare with other objects or events. In other words, measurement is a process of determining how large or small a physical quantity is as compared to a basic reference quantity of the same kind. The scope and application of measurement are dependent on the context and discipline. In natural sciences and engineering, measurements do not apply to nominal properties of objects or events, which is consistent with the guidelines of the ''International vocabulary of metrology'' published by the International Bureau of Weights and Measures. However, in other fields such as statistics as well as the social and behavioural sciences, measurements can have multiple levels, which would include nominal, ordinal, interval and ratio scales. Measurement is a cornerstone of trade, science, technology and quantitative research in many disciplines. Historically, many measurement systems existed f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rømer's Determination Of The Speed Of Light
Rømer's determination of the speed of light was the demonstration in 1676 that light has a finite speed and so does not travel instantaneously. The discovery is usually attributed to Danish astronomer Ole Rømer,There are several alternative spellings of Rømer's surname: Roemer, Rœmer, Römer etc. The Danish Ole is sometimes latinized to Olaus. who was working at the Royal Observatory in Paris at the time. By timing the eclipses of the Jovian moon Io, Rømer estimated that light would take about 22 minutes to travel a distance equal to the diameter of Earth's orbit around the Sun. This would give light a velocity of about 220,000 kilometres per second, about 26% lower than the true value of 299,792 km/s. Rømer's theory was controversial at the time that he announced it and he never convinced the director of the Paris Observatory, Giovanni Domenico Cassini, to fully accept it. However, it quickly gained support among other natural philosophers of the period such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ole Rømer
Ole Christensen Rømer (; 25 September 1644 – 19 September 1710) was a Danish astronomer who, in 1676, made the first measurement 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 scientific literature, alternative spellings such as "Roemer", "Römer", or "Romer" are common. Biography Rømer was born on 25 September 1644 in Århus to merchant and skipper Christen Pedersen (died 1663), and Anna Olufsdatter Storm ( – 1690), daughter of a well-to-do alderman. Since 1642, Christen Pedersen had taken to using the name Rømer, which means that he was from the Danish island of Rømø, to distinguish himself from a couple of other people named Christen Pedersen. There are few records of Ole Rømer before 1662, when he graduated from the old Aarhus Katedralskole (the Cathedral school of Aarhus), moved to Copenhagen and matriculated at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 observational (by analyzing the data) or theoretical astronomy. Examples of topics or fields astronomers study include planetary science, solar astronomy, the origin or evolution of stars, or the formation of galaxies. A related but distinct subject is physical cosmology, which studies the Universe as a whole. Types Astronomers usually fall under either of two main types: observational and theoretical. Observational astronomers make direct observations of celestial objects and analyze the data. In contrast, theoretical astronomers create and investigate models of things that cannot be observed. Because it takes millions to billions of years for a system of stars or a galaxy to complete a life cycle, astronomers must observe sna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1676
Events January–March * January 29 – Feodor III becomes Tsar of Russia. * January 31 – Universidad de San Carlos de Guatemala, the oldest institution of higher education in Central America, is founded. * January – Six months into King Philip's War, Metacomet (King Philip), leader of the Algonquian tribe known as the Wampanoag, travels westward to the Mohawk nation, seeking an alliance with the Mohawks against the English colonists of New England; his efforts in creating such an alliance are a failure. * February 10 – After the Nipmuc tribe attacks Lancaster, Massachusetts, colonist Mary Rowlandson is taken captive, and lives with the Indians until May. * February 14 – Metacomet and his Wampanoags attack Northampton, Massachusetts; meanwhile, the Massachusetts Council debates whether a wall should be erected around Boston. * February 23 – While the Massachusetts Council debates how to handle the Christian Indians they had exi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Style And New Style Dates
Old Style (O.S.) and New Style (N.S.) indicate dating systems before and after a calendar change, respectively. Usually, this is the change from the Julian calendar to the Gregorian calendar as enacted in various European countries between 1582 and 1923. In England, Wales, Ireland and Britain's American colonies, there were two calendar changes, both in 1752. The first adjusted the start of a new year from Lady Day (25 March) to 1 January (which Scotland had done from 1600), while the second discarded the Julian calendar in favour of the Gregorian calendar, removing 11 days from the September 1752 calendar to do so.Spathaky, MikOld Style and New Style Dates and the change to the Gregorian Calendar "Before 1752, parish registers, in addition to a new year heading after 24th March showing, for example '1733', had another heading at the end of the following December indicating '1733/4'. This showed where the Historical Year 1734 started even though the Civil Year 1733 continued u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
November 11
Events Pre-1600 * 308 – At Carnuntum, Emperor ''emeritus'' Diocletian confers with Galerius, ''Augustus'' of the East, and Maximianus, the recently returned former ''Augustus'' of the West, in an attempt to end the civil wars of the Tetrarchy. *1028 – Constantine VIII dies, ending his uninterrupted reign as emperor or co-emperor of the Byzantine Empire of 66 years. * 1100 – Henry I of England marries Matilda of Scotland, the daughter of Malcolm III of Scotland and a direct descendant of the Saxon king Edmund Ironside; Matilda is crowned on the same day. * 1215 – The Fourth Council of the Lateran meets, defining the doctrine of transubstantiation, the process by which bread and wine are, by that doctrine, said to transform into the body and blood of Christ. * 1500 – Treaty of Granada: Louis XII of France and Ferdinand II of Aragon agree to divide the Kingdom of Naples between them. * 1572 – Tycho Brahe observes the supernova S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
