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For example, in an analog audio signal, the instantaneous signal voltage varies continuously with the pressure of the sound waves
For example, in an analog audio signal, the
Arecales is an order of flowering plants
Arecales is an order of flowering
The order has been widely recognised only for the past few decades; until then, the accepted name for the order including these plants was Principes
The order has been widely recognised only for the past
Taxonomy The APG IV system of 2016 places Dasypogonaceae in this order, after studies showing Dasypogonaceae as sister to Arecaceae
Taxonomy The APG IV system of 2016
Hercule Poirot (, ) is a fictional Belgian detective created by British writer Agatha Christie
Hercule Poirot (, ) is
Poirot is one of Christie's most famous and long-running characters, appearing in 33 novels, two plays (Black Coffee and Alibi), and more than 50 short stories published between 1920 and 1975
Poirot is one of Christie's most famous
A more obvious influence on the early Poirot stories is that of Arthur Conan Doyle
A more obvious influence on the early Poirot
Miss Marple is a fictional character in Agatha Christie's crime novels and short stories
Miss Marple is a fictional character in Agatha
Jane Marple lives in the village of St
Jane Marple lives in the village of
Mary Mead and acts as an amateur consulting detective
Mary Mead and acts as an amateur consulting
History The Romans gave this month the Latin name Aprilis but the derivation of this name is uncertain
History The Romans gave this month the Latin
Jacob Grimm suggests the name of a hypothetical god or hero, Aper or Aprus
Jacob Grimm suggests the name of a hypothetical god or
April was the second month of the earliest Roman calendar, before Ianuarius and Februarius were added by King Numa Pompilius about 700 BC
April was the second month of the earliest Roman
August is the eighth month of the year in the Julian and Gregorian calendars, and the fifth of seven months to have a length of 31 days
August is the eighth month of the year in the
About 700 BC, it became the eighth month when January and February were added to the year before March by King Numa Pompilius, who also gave it 29 days
About 700 BC, it became the eighth month
Julius Caesar added two days when he created the Julian calendar in 46 BC (708 AUC), giving it its modern length of 31 days
Julius Caesar added two days when he created the
According to the Abrahamic religions, Aaron ( or ; ’Ahărōn) was a prophet, high priest, and the elder brother of Moses
According to the Abrahamic religions, Aaron ( or
Knowledge of Aaron, along with his brother Moses, comes exclusively from religious texts, such as the Bible and Quran
Knowledge of Aaron, along with his brother
The Hebrew Bible relates that, unlike Moses, who grew up in the Egyptian royal court, Aaron and his elder sister Miriam remained with their kinsmen in the eastern border-land of Egypt (Goshen)
The Hebrew Bible relates that, unlike Moses, who
Events Pre–1600 46 BC – Julius Caesar defeats Caecilius Metellus Scipio and Marcus Porcius Cato (Cato the Younger) at the Battle of Thapsus
Events Pre–1600 46 BC –
402 – Stilicho defeats the Visigoths under Alaric in the Battle of Pollentia
402 – Stilicho defeats the Visigoths
1250 – Seventh Crusade: Ayyubids of Egypt capture King Louis IX of France in the Battle of Fariskur
1250 – Seventh Crusade: Ayyubids
Events Pre-1600 240 – Shapur I becomes co-emperor of the Sasanian Empire with his father Ardashir I
Events Pre-1600 240 –
467 – Anthemius is elevated to Emperor of the Western Roman Empire
467 – Anthemius is elevated to Emperor of the
627 – King Edwin of Northumbria is converted to Christianity by Paulinus, bishop of York
627 – King Edwin of Northumbria is converted
Events Pre-1600 769 – The Lateran Council condemns the Council of Hieria and anathematizes its iconoclastic rulings
Events Pre-1600 769 –
1071 – Bari, the last Byzantine possession in southern Italy, is surrendered to Robert Guiscard
1071 – Bari, the last Byzantine possession
1395 – Timur defeats Tokhtamysh of the Golden Horde at the Battle of the Terek River
1395 – Timur defeats
Events Pre-1600 30 – After being condemned to death by the Jewish court known as the Sanhedrin, Jesus of Nazareth is crucified at Golghotha
Events Pre-1600 30 – After
311 – The Diocletianic Persecution of Christians in the Roman Empire ends
311 – The Diocletianic Persecution
1315 – Enguerrand de Marigny is hanged at the instigation of Charles, Count of Valois
1315 – Enguerrand de
Events Pre-1600 392 – Arbogast has Eugenius elected Western Roman Emperor
Events Pre-1600 392 –
851 – Battle of Jengland: Erispoe defeats Charles the Bald near the Breton town of Jengland
851 – Battle of Jengland:
1138 – Battle of the Standard between Scotland and England
1138 – Battle of the Standard between Scotland and
Events Pre-1600 410 – The sacking of Rome by the Visigoths ends after three days
Events Pre-1600 410 – The
1172 – Henry the Young King and Margaret of France are crowned junior king and queen of England
1172 – Henry the Young King and Margaret of
1557 – The Battle of St
1557 – The Battle of
In chemistry, an alcohol is a type of organic compound that carries at least one hydroxyl functional group (−OH) bound to a saturated carbon atom
In chemistry, an alcohol is a type of organic
The term alcohol originally referred to the primary alcohol ethanol (ethyl alcohol), which is used as a drug and is the main alcohol present in alcoholic drinks
The term alcohol originally referred to the primary alcohol ethanol
An important class of alcohols, of which methanol and ethanol are the simplest members, includes all compounds for which the general formula is
An important class of alcohols, of which
Achill Island (; ) in County Mayo is the largest of the Irish isles, and is situated off the west coast of Ireland
Achill Island (; ) in County Mayo
It has a population of 2,594
It has a population of
Achill is attached to the mainland by Michael Davitt Bridge, between the villages of Gob an Choire (Achill Sound) and Poll Raithní (Polranny)
Achill is attached to the mainland by Michael
Irwin Allen Ginsberg (; June 3, 1926 – April 5, 1997) was an American poet and writer
Irwin Allen Ginsberg (; June 3,
As a student at Columbia University in the 1940s, he began friendships with William S
As a student at Columbia University in the
Burroughs and Jack Kerouac, forming the core of the Beat Generation
Burroughs and Jack Kerouac, forming
In mathematics, a field is algebraically closed if every non-constant polynomial in (the univariate polynomial ring with coefficients in ) has a root in
In mathematics, a field is algebraically closed
The same argument proves that no subfield of the real field is algebraically closed; in particular, the field of rational numbers is not algebraically closed
The same argument proves that no subfield of the
Also, no finite field F is algebraically closed, because if a1, a2,
Also, no finite field F is algebraically
Events Pre-1600 1284 – The Republic of Pisa is defeated in the Battle of Meloria by the Republic of Genoa, thus losing its naval dominance in the Mediterranean
Events Pre-1600 1284 –
1538 – Bogotá, Colombia, is founded by Gonzalo Jiménez de Quesada
1538 – Bogotá, Colombia, is
1601–1900 1661 – The Treaty of The Hague is signed by Portugal and the Dutch Republic
1601–1900 1661 – The Treaty
Anatoly Yevgenyevich Karpov (; born May 23, 1951) is a Russian and former Soviet chess grandmaster, former World Chess Champion, ⁣and politician
Anatoly Yevgenyevich
The International Association of Chess Press awarded him nine Chess "Oscars" (1973, 1974, 1975, 1976, 1977, 1979, 1980, 1981, 1984)
The International Association of Chess Press awarded him nine Chess
Karpov's tournament successes include over 160 first-place finishes
Karpov's tournament successes include over 160
The aspect ratio of a geometric shape is the ratio of its sizes in different dimensions
The aspect ratio of a geometric shape is the ratio
For example, the aspect ratio of a rectangle is the ratio of its longer side to its shorter sidethe ratio of width to height, when the rectangle is oriented as a "landscape"
For example, the aspect ratio of a rectangle is
The aspect ratio is most often expressed as two integer numbers separated by a colon (x:y), less commonly as a simple or decimal fraction
The aspect ratio is most often expressed as two integer
Auto racing (also known as car racing, motor racing, or automobile racing) is a motorsport involving the racing of automobiles for competition
Auto racing (also known as car racing, motor
Auto racing has existed since the invention of the automobile
Auto racing has existed since the invention of the
Races of various sorts were organised, with the first recorded as early as 1867
Races of various sorts were organised, with the
Rothbard's anarcho-capitalist society would operate under a mutually agreed-upon "legal code which would be generally accepted, and which the courts would pledge themselves to follow"
Rothbard's anarcho-capitalist society would
This legal code would recognize contracts, private property, self-ownership and tort law in keeping with the non-aggression principle
This legal code would recognize contracts, private property,
Anarcho-capitalism is distinguished from both minarchism and anarchism
Anarcho-capitalism is distinguished from both
Events Pre-1600 48 BC – Caesar's Civil War: Battle of Pharsalus: Julius Caesar decisively defeats Pompey at Pharsalus and Pompey flees to Egypt
Events Pre-1600 48 BC –
378 – Gothic War: Battle of Adrianople: A large Roman army led by Emperor Valens is defeated by the Visigoths
378 – Gothic War: Battle of Adrianople:
Valens is killed along with over half of his army
Valens is killed along with over half of his
Aristophanes (; , ; c
Aristophanes (;, ;
386 BC), son of Philippus, of the deme Kydathenaion (), was a comic playwright or comedy-writer of ancient Athens and a poet of Old Attic Comedy
386 BC), son of Philippus, of the
Eleven of his forty plays survive virtually complete
Eleven of his forty plays survive virtually
Ludwig Philipp Albert Schweitzer (; 14 January 1875 – 4 September 1965) was an Alsatian-German polymath
Ludwig Philipp Albert Schweitzer (;
He was a theologian, organist, musicologist, writer, humanitarian, philosopher, and physician
He was a theologian, organist,
A Lutheran, Schweitzer challenged both the secular view of Jesus as depicted by the historical-critical method current at this time, as well as the traditional Christian view
A Lutheran, Schweitzer challenged both the secular view
The Austrian School originated in late-19th and early-20th-century Vienna with the work of Carl Menger, Eugen Böhm von Bawerk, Friedrich von Wieser, and others
The Austrian School originated in late-19th and
It was methodologically opposed to the younger Historical School (based in Germany), in a dispute known as Methodenstreit, or methodology struggle
It was methodologically opposed to the younger Historical School
Current-day economists working in this tradition are located in many different countries, but their work is still referred to as Austrian economics
Current-day economists working in this tradition are located
An abscess is a collection of pus that has built up within the tissue of the body
An abscess is a collection of pus that has
Signs and symptoms of abscesses include redness, pain, warmth, and swelling
Signs and symptoms of abscesses include
The swelling may feel fluid-filled when pressed
The swelling may feel fluid-filled when
Aalborg Municipality is a municipality (Danish, kommune) in Region Nordjylland on the Jutland peninsula in northern Denmark
Aalborg Municipality is a municipality
It has a land area of 1,143
It has a land area of
99 km2, population 197,426 (2010) and belongs to Region Nordjylland ("North Jutland Region")
99 km2, population 197,426
Aarhus (, , ; officially spelled Århus from 1948 until 1 January 2011) is the second-largest city in Denmark and the seat of Aarhus municipality
Aarhus (,, ; officially spelled
It is located on the eastern shore of Jutland in the Kattegat sea and approximately northwest of Copenhagen
It is located on the eastern shore of
The largest city in Jutland, Aarhus anchors the Central Denmark Region and the statistical region Landsdel Østjylland (LØ) (Lit
The largest city in Jutland,
The northern cavefish or northern blindfish, Amblyopsis spelaea, is found in caves through Kentucky and southern Indiana
The northern cavefish or northern blindfish,
It is listed as a threatened species in the United States and the IUCN lists the species as near threatened
It is listed as a threatened species in the United
The southern population retained the name A
The southern population retained the name
An amateur (; ; ) is generally considered a person who pursues an avocation independent from their source of income
An amateur (; ; ) is generally considered a
Amateurs and their pursuits are also described as popular, informal, self-taught, user-generated, DIY, and hobbyist
Amateurs and their pursuits are also described as
History Historically, the amateur was considered to be the ideal balance between pure intent, open mind, and the interest or passion for a subject
History Historically, the amateur was
Alexis Carrel (; 28 June 1873 – 5 November 1944) was a French surgeon and biologist who was awarded the Nobel Prize in Physiology or Medicine in 1912 for pioneering vascular suturing techniques
Alexis Carrel (; 28 June 1873
He invented the first perfusion pump with Charles A
He invented the first perfusion pump with Charles
Lindbergh opening the way to organ transplantation
Lindbergh opening the way to organ
All Souls' Day is often celebrated in Western Christianity; Saturday of Souls is a related tradition more frequently observed in Eastern Christianity
All Souls' Day is often celebrated in Western
Adherents of All Souls' Day traditions often remember deceased friends and relatives in various ways on the day
Adherents of All Souls' Day traditions often
Through prayer, intercessions, alms and visits to cemeteries, people commemorate the poor souls in purgatory and gain them indulgences
Through prayer, intercessions, alms and
(; born , ; 16 April 1844 – 12 October 1924) was a French poet, journalist, and novelist with several best-sellers
(; born, ; 16 April 1844 –
Ironic and skeptical, he was considered in his day the ideal French man of letters
Ironic and skeptical, he was considered in his
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
France is also widely believed to be the model for