Aarushhh/wikipedia-simple-splitted huggingface dataset:
Some interpretations of the Bhagavad Gita suggest an intermediate view, that karma is a law of cause and effect yet God can mitigate karma for His devotees. It is said in Bhagavad Gita that only the karma that is done with a sense of doership and with attachment to the karma could cause good or bad reactions. Karma that is done with an attitude of duty and without attachment to the results will not create any effect and will move one closer to God.

Another view holds that a Satguru, acting on God's behalf, can mitigate or work out some of the karma of the disciple.

Related pages 
 Just-World phenomenon is like Karma

References

Other websites 
 Karma as explained in the Buddhist Encyclopedia  (buddhism.2be.net)
 The Law of Karma  (Heart of Hinduism)  
What is Karma ? The Cause and Effect of Karma
Karma by American Buddhist monk Thanissaro Bhikkhu

Hinduism
Philosophy
Religious ethics
The western hemisphere is a geographical term for the half of the Earth that is west of the Prime Meridian. Pretend that the earth is cut in half, from the North Pole, through England, to the South Pole. The Western Hemisphere is the half to the west. The other half is called the Eastern Hemisphere.

Related pages
 The Americas
 New World
 Eastern hemisphere
 Northern hemisphere
 Southern hemisphere
 Prime Meridian

References 

Hemispheres
A Molotov cocktail, also known as a petrol bomb, fire bomb, or benzine torch, is a simple incendiary device, meant to start a fire. It is relatively easy to make and is used by irregular paramilitary forces and by rioters. It is also used for arson.

It was used for the first time in the Spanish Civil War between July 1936 and April 1939, but it became known as "Molotov cocktails" only during the Second World War.

Mechanism 

A Molotov cocktail consists of a glass bottle partly filled with a flammable liquid. The liquid will typically be gasoline, alcohol, methanol or ethanol. The mouth of the bottle is closed with a cork or other type of tight sealing made of rubber, glass, or plastic, and a cloth rag is fixed securely around the mouth. The weapon is used by first soaking the rag in a flammable liquid immediately before using it, lighting the rag, and throwing the bottle at the target. The bottle breaks when it lands, spilling the flammable liquid over the target, which is then ignited by the burning rag.
Many substances may be added to the basic Molotov cocktail to enhance its use as a weapon. These include:
 Substances that will ignite by themselves when hitting the target, for example White phosphorus
 Substances that will help the liquid stick to the target, for example tar
 Acid will help the penetration of non-flammable surfaces
 Substances that will increase the explosive effect, for example gunpowder

Molotov cocktails are similar to napalm bombs in principle. Napalm was originally made by combining flammable naphthalene and petrol with a thickening agent palmitic acid. The latter two are the main ingredients of Molotov cocktails. When gasoline is used as the main ingredient, motor oil is commonly added to help the gasoline cling to the target.

Origin of name 
The name "Molotov cocktail" is derived from Vyacheslav Mikhailovich Molotov, a Soviet politician. He was the People's Commissar for Foreign Affairs, or the Foreign Minister, of the Soviet Union.
When Molotov claimed in radio broadcasts that the Soviet Union was not dropping bombs but rather delivering food to the starving Finns, the Finns started to call the air bombs satirically "Molotov bread baskets". Soon they responded by saluting the advancing tanks with "Molotov cocktails." At first the term was used to describe only the burning mixture itself, but the term was soon applied to the combination of both the bottle and its contents. This Finnish use of the hand- or sling-thrown explosive against Soviet tanks was repeated in the subsequent Continuation War. Molotov cocktails were eventually mass-produced by the Finnish military, bundled with matches to light them.

These weapons saw widespread use by all sides in World War II. They were very effective against light tanks, and very bad for enemy morale. The following is a first-hand description of their effects, written during the Warsaw Ghetto Uprising in 1943:
The well-aimed bottles hit the tank. The flames spread quickly. The blast of the explosion is heard. The machine stands motionless. The crew is burned alive. The other two tanks turn around and withdraw. The Germans who took cover behind them withdraw in panic. We take leave of them with a few well-aimed shots and grenades.

During the 1948 Arab–Israeli War, members of the Israeli Kibbutz Degania managed to stop a Syrian tank assault by using Molotov cocktails. They were frequently used against Soviet tanks with great efficiency in the Hungarian Revolution of 1956.
Petrol bombs were widely used throughout the Troubles in Northern Ireland in riot situations, directed towards the RUC or the British Army. As well as occasional situations where they continue to be used against the PSNI and army, they are frequently used in sectarian attacks on homes and businesses by both communities. Fireworks and homemade grenades, known as blast bombs now commonly accompany petrol bomb attacks on the security forces.

Legal concerns 
As such things can cause a lot of damage, and actually kill people, it is illegal in most countries to make or possess them. When they are used against property, this usually counts as arson. When they are used against people, the charges range from manslaughter to murder.

Given the recent terrorism laws, such things could also fall under anti-terror legislation.

Recent use 
Ukrainians were using these to fend off Russian tanks late February 2022.
Molotov cocktails were put to use recently during the riotous 2005 civil unrest in France. Another situation with popularity for them is the Palestinian Intifada.

In Sydney, during the Cronulla Riots, rioters carrying Molotov cocktails were apprehended when they carried open bottles in a bus. The resulting smell of petrol alerted the driver, who in turn alerted the police.

During the Columbine High School massacre, the two gunmen built and threw several Molotov cocktails; however, none of them exploded. It is presumed that this was due to bottles being overfilled.

References

Other websites 
 
 La Unidad Italiana de Carros-Artillería, los T-26 Soviéticos y la Batalla de Seseña 

 Eyewitness reporting for the Zydowska Organizacja Bojowa|Żydowska Organizacja Bojowa (Jewish Fighting Organization), 1943-04-19

Other websites 
 A detailed technology of the Molotov cocktail

Incendiary weapons
Improvised explosive devices
Flammability or inflammability means that something can be set on fire easily. It will burn easily. The words come from Latin. The word at the base is in-flammare (late Latin). It means something like "to put fire to a thing".

Inflammable and flammable are used to mean the same thing. People sometimes get confused and think that inflammable means "not flammable" because the prefix in is often used to mean not. For example, something that is inhuman is not human. Since many people do not know that inflammable means "burns easily", flammable is used more often in public places as a warning.

Flammability can be tested. Paper, for example, is more flammable than wood, and less flammable than natural gas.

Thermodynamics
Arson is a crime. When someone deliberately sets fire to anything (such as a building or vehicle) they do not own and they want to cause damage, it is called arson. A person who commits arson is an arsonist. Arsonists usually use gasoline or kerosene to start a fire. 

Arsonists use matches, Molotov cocktails and fire starters to start a fire. Arson is common in violent protests and retaliations against the government and other powers.  

Arsonists deliberately burn things for benefits that they want. This includes personal reasons, reasons related to money, or political reasons.
Julio Gonzalez became one of the most prolific arsonists in history when he set fire to the Happy Land nightclub with only 6 of the 93 occupants making it out alive. Julio started the fire after the bouncer kicked him out late in the evening due to him quarreling with his girlfriend Lydia Feliciano after she recently quit her job there. She was one of the 6 people to survive the fire. The club also came under fire due to the club having no fire escapes or sprinklers.

References

Arson
Types of crime
A cocktail is a kind of mixed drink. Usually, it is made with alcoholic drinks such as vodka, gin or rum. Since such spirits do not have much taste of their own (at around 40% alcohol), other ingredients are added. Common ingredients are fruits, fruit juice, sugar, crushed ice, and ice cubes. If the cocktail is served in a bar or nightclub, it often comes with a piece of fruit on top. For example, a gin and tonic could have a lemon, a Piña Colada could have a pineapple and a cherry. A popular cocktail in Cornwall UK is the McVey, 440ml of strongbow and 125ml of Malibu.

Most cocktails were invented in the late 19th or early 20th centuries. People began drinking a lot of cocktails in the United States in the 1920s due to Prohibition. Around that time, cocktails from Cuba, such as the mojito, became popular around the world.

Cocktails made without alcohol are also made.

Because all the ingredients give their flavor to the finished drink, a cocktail is only as good as the worst ingredient.

Common cocktails
Common cocktails 

There are many kinds of cocktails. They include:
A martini is the most common cocktail. It is made with gin and vermouth, and served with an olive
There are many variations on a martini, which include a Gibson (martini with an onion instead of an olive), a Bronx (Martini plus orange juice), and an Appletini (made with apple liqueur instead of vermouth)
 The old-fashioned is thought to be the first cocktail. It is made with whiskey, sugar, bitters, and soda water
 A margarita is made with tequila, triple sec and lime juice. It came from Mexico, and is commonly served in Mexican cuisine.
A sidecar is similar to a margarita, but is made with cognac instead of tequila
 A Manhattan is made with rye whiskey, vermouth, and bitters
If it is made with scotch, it is called a Rob Roy
 A mojito is made with rum, lime juice, sugar, water and spearmint leaves.
A mint julip is similar to a mojito. It made with bourbon, sugar, water, and spearmint leaves. It is popular in the Southern United States, especially at the Kentucky Derby
A daiquiri is made with rum and lime juice. Like many popular cocktails, it came from Cuba.
 A piña colada is an iced cocktail made with pineapple juice, coconut puree and rum. It came from Puerto Rico.
 A bloody Mary is made with tomato and lemon juices, plus vodka. It is different not only because of its blood-red color, but because it is served with a pickle or celery.
References

Other websites
 Wikibooks:Bartending for many recipes
1103 was a common year.

Events 
 April 27 – Anselm, Archbishop of Canterbury, goes into exile after falling out with Henry I of England
 Amadeus III becomes Count of Savoy
 Bohemund I of Antioch is released from imprisonment among the Turks
 The Scandinavian city of Lund becomes a see within the Roman Catholic Church

Births 
 Emperor Toba of Japan
A sneeze is a reaction in the body that suddenly presses air out of lungs so it flows quickly out through the mouth and nose. Air and mucus (the liquid found in the nose) are forced out quickly. Sneezing often happens after breathing dust or other small things that irritate the membranes in the nose. The function of sneezing is to clean the space in the nose by removing the mucus and irritating things. Sneezing is mostly involuntary, which means that it happens without trying.

A sneeze consists of a deep inward breath that fills the lungs, a closing or partial closing of the throat, and a sudden increase in pressure in the lungs that forces air out. This increase in pressure is a result of muscles near the lungs that contract (tighten and shorten). Sneezing never happens during sleep because reflex signals do not pass to the part of the brain that causes muscles to move. When people sneeze, their eyes close. The speed of the air from sneezing is about 150 kilometers per hour or more.
Many animals sneeze, including human beings, cats, dogs, chickens and iguanas.

When a person sneezes, many small drops of saliva and mucus blow out from the nose and mouth. These tiny drops often contain viruses and bacteria. Some of these are germs, which can make other people sick. To keep this from happening as much, is important to block the sneezed air with something like cloth or tissue to catch the drops. It also helps to move away from other people, go outside, or face away.

A common thing to say to people when they sneeze is "Bless you!", or sometimes in the United States sometimes "Gesundheit!" (from German, meaning "Good health"). There is a story that the blessing started with Pope Gregory VII (540–604 AD). He said a blessing might stop people from getting the bubonic plague which was killing people in Rome at the time. There is a myth that when you sneeze your heart and all internal organs stop functioning.
The sound of a sneeze is written "achoo!" in English. Other languages write it differently. For example, in Swedish it is "atjoo!", in French it is "atchoum!" and in German it is "Hatschi!".

Some involuntary ways that people move air in or out of the lungs are: to sneeze, laugh, cough, hiccup, or yawn.

Related pages 
 Cough

References

Basic English 850 words
Physiology
Symptoms
Pumas (Puma concolor), also called cougars, mountain lions, catamounts, or brown panthers, are large wild cats that live in the western half of North America, along with Florida, and most of Central and South America. 

Pumas are mainly tan-color, and can be up to 9 feet long, although average length is 6 – 8 feet. They can weigh from 29 kilograms to 90 kilograms.  (The males are larger.)  Most pumas live up to 21 years. Although pumas are very large and some are larger than humans, the puma is classified as a small cat. That means that, in scientific terms, the puma is more closely related to the domestic cat than they are to lions. Unlike the big cats in the genus Panthera, the puma cannot roar. Instead, it can growl, hiss, screech, and purr. Since pumas are, in the biological sense, small cats, they are capable of purring continuously. The big cats can only purr while breathing out.
Pumas are carnivores because they eat only meat. Pumas are apex predators. They prey on deer, elk, raccoons, squirrels, foxes, rabbits, and skunks.  They can also prey on mice, beavers, coyotes, bobcats, birds, porcupines, fish, and bear cubs. They will sometimes prey on livestock such as cattle, goats, sheep, and pigs. They hunt at night. Cougars can see better at night than people can.  They can hear well too.  Pumas stalk their prey, which means they walk slowly and quietly, they hide and then when close, they jump or run fast to catch their prey by surprise.  They live and hunt alone. Female cougars take care of their babies until they are old enough to take care for themselves. Baby cougars are called cubs or kittens.
Pumas live in the mountains and forests far from people. However, encounters with humans happen sometimes. 26 people have been killed by cougars in North America in the last 30 years. However, many more cougars have been killed by humans. Cougars used to be found all in eastern North America, but they were hunted to extinction there by the beginning of the 1900s. Also, recent sightings of cougars have been reported from Michigan, New Brunswick, southern Indiana, Kentucky, and Vermont. For now, the only confirmed, population of cougars east of the Mississippi River is in Florida, where a subspecies of the cougar lives.

Related pages
Florida Panthers

Sources

Other websites 
 IUCN 

 Information on Pumas 

Felines
Mammals of North America
Mammals of South America
Big cats
Google Talk (also called Google Chat) was an instant messaging service that was offered by Google. It let users communicate by using texting and voice chatting. The service was sometimes called Gchat, Gtalk, or Gmessage by its users.

It is built on the XMPP platform. A web-based version was also available online.

References

Talk
Armour (or armor U.S.) is a protective covering or clothing to prevent injury from attack. Armour can be worn by a person, or it can be used to protect machines, animals, even buildings. Armour has always been made from the strongest materials available at the time, but weight has always been a problem. Early body armour was made from leather. Later, metals were used (e.g. mail or plate armour). Some modern armour, like bullet-proof vests, are made from plastics that do not stretch or break, such as Kevlar. These plastics may be woven into a cloth and used in layers, which makes them even stronger.

Plastic lamination (layers) is often used to protect windows against bullets.  Many jewellery stores, embassies, and vehicles have bullet-proof glass with this feature.
For vehicles 
Armour put on vehicles is usually made of metal and can include one layer over another with open spaces in between (spaced armour) or multiple layers of metal; ceramics (baked clay), and other materials. Another type of armour uses blocks of explosive that explode when another explosion goes off near it. This explosive armour protects by pushing against the other explosion. Vehicle armor is often angled to increase the amount of armour that must be shot through to get inside and to make the shot bounce off rather than piercing the armour.

Tanks have the heaviest armour of all land vehicles. Other military vehicles have armour, but not as much as a tank. 

Sometimes armour is put in non-military vehicles, such as limousines used by leaders of a country or by anyone who thinks they might be attacked, e.g. film stars or presidents of major companies.
For animals 
In the past, armour has also been used in wars to protect animals such as dogs, elephants, and horses. Today, police dogs and horses sometimes wear woven plastic bullet-proof vests.

For sports
Many sports involve violent physical contact and may be highly dangerous if the players are unprotected. Such sports include ice hockey, American football and kendo. Sports armour is usually made from hard plastic.
North Star Computers was one of the earliest manufacturers of microcomputers. Before they started making their first computer, the North Star Horizon, they made floppy disk drives for S-100 bus computers. They included a disk operating system called North Star DOS (or N*DOS). The Horizon used the North Star disk controller and operating system. It was one of the first microcomputers that had multi-user features.

Their second computer, called the North Star Advantage, ran CP/M, and had the keyboard and monitor built-in. The graphics were very powerful for their time. When the IBM PC came out, North Star made an MS-DOS compatible processor card that could be added to the Advantage.

Their third computer, the North Star Dimension, was multi-user like the Horizon, but MS-DOS based.

Because their products in the early 1980s were only MS-DOS compatible, not fully PC compatible, they never sold very many, and the company went out of business.
American technology companies
Companies based in the San Francisco Bay Area
1976 establishments in California
1985 disestablishments in the United States
Mario Bros. is a video game made in 1983. In the game, Mario and/or Luigi must defeat enemies by jumping on them from below and then kicking them, when they are knocked down. It is the first game to feature Luigi as a playable character as well as the first game in which Mario is named Mario. In Donkey Kong, Mario was called Jumpman. It was later remade for other game consoles at the time. Mario Bros. was also included with the four Super Mario Advance games.

Mario platform games
1983 video games
An oval is a shape. It is round but a bit longer in one direction. 

 An oval can look like an egg or an ellipse.

Shapes
Focus is a Latin word for hearth. In English it means many things.

 Focus (geometry), one of the two points around which a conic section is built
 Focus (optics), the bringing together of light rays by a lens
 Ford Focus, a car
 The hypocenter of an earthquake
 The place where a nuclear explosion goes off
The pipe organ is a keyboard instrument in which the sound is made by air blowing through pipes. A person who plays the organ is called an organist. The organist plays the instrument using both the hands and the feet. The hands play the keyboards (called manuals), while the feet play pedals which also make notes.

Organs have been made for many centuries. They are usually found in places for Christian worship such as churches and cathedrals, although they may also be found in places like town halls and concert halls or even large private houses. Very small organs can be called “chamber organs”. Organs in large churches, cathedrals or halls are very large instruments indeed, and are built especially for the building they are in. They are called “pipe organs” to distinguish them from modern “electronic organs”.
No two organs are ever quite the same, and they vary greatly from one country to another and one historical period to another. The information here is about organs from Europe, Great Britain and America.

How an organ works

A description of the organ

In a pipe organ, the musical notes are made by blowing air through pipes. Every organ must have pipes, something to blow the air and a way of controlling which pipes are played.
Each pipe can play only one note which depends on its size. The small pipes play high notes and the large pipes play low notes. Each pipe has its own special sound which depends on the material it is made from (whether it is wood or brass or spotted metal) and on the shape of the pipe. The pipes are arranged in "ranks" so that all the pipes of the same shape and material can be controlled to play a tune together, without all the others.

To blow air through the organ, there are boxes called "wind chests". When the organist is playing, he/she can see a little gauge that tells whether there is enough air. The wind chests can be kept full in two ways. The old-fashioned way is to have an enormous set of "bellows" (see the picture) which are pumped up and down by a person using a large handle. This sucks in air and fills the wind chest. Pumping the bellows of a large pipe organ is heavy work. For this reason, most organs nowadays have an electric motor and a large fan which fills the wind chest.
A more modern development was to have a "tubular pneumatic" action, in which the console could be away from the organ, but connected to it by tubes through which air could be pushed to open the valves. In the most modern pipe organs, the manual is connected to the organ pipes by electric wires. The power to open and shut the valves is controlled by electro-magnetic switches. The console does not have to be close to the organ. This makes it possible for the organist to sit in a position where he/she has good contact with the people in the church, or with other musicians.

The technical details
The manuals
A very small organ may only have one manual (keyboard). Most organs have at least two. In English and American Organs the lower manual is the main one and is called the Great. The upper manual is called the Swell because it operates pipes which are inside a “swell box” which has shutters that can be opened or closed. This makes the music get louder or quieter (crescendo or diminuendo). The organist operates the swell box with a pedal which pivots (rocks to and fro). It is in the centre just above the pedal board. On old English organs the swell box is operated by a lever at the side. This is quite difficult to use. Most of these have now been replaced by central swell boxes.
If there is a third manual, it is called the Choir in English-speaking countries. Originally the English called them “chair organs” because they were a separate instrument. The organist had to turn round and face the other way to play it. It is thought that the word "chair" gradually changed to "choir" because it was often used to accompany the choir. In German organs the third manual was called the “Positiv”. The name “Rückpositiv” (“back positive”) was used because the pipes were behind the organist’s back as he/she sat facing the main organ. These started to become popular again with organ builders in the 1950s when it was felt that the Romantic organ was not suitable for old music, and some organ builders started using Baroque principles again so that the music of composers such as Bach could sound like it used to. The Choir manual is nearest to the player, the Great is in the middle and the Swell is farthest away
. The Choir or Positiv often contains soft stops which are suitable for accompanying the choir. On French organs from the late 19th century onwards, the three manuals are arranged differently: the Great (“Grande Orgue”) is nearest to the player, the “Positif” is the middle manual and is like a smaller version of the Great, and the Swell (“Recit”) is the top manual. This makes it easy for the organist to build up the music, getting louder gradually, by starting at the top and gradually coming down.
The fourth manual is called the Solo because the stops on this manual are used to play out the tune as a solo. This manual is even farther away from the player than the Swell. Large cathedral organs usually have four manuals. The Solo will probably have a very loud stop indeed called the “Tuba” or “Tuba Mirabilis”.

If there is a fifth manual it may be called the Echo because it has very quiet stops that echo. Alternatively, especially on American organs, it might be a Bombarde. The Bombarde usually contains loud, bold reed stops, including stops called 'Bombarde'. For instance: a State Trumpet or Pontifical Trumpet might be placed on this manual which can be heard above all the other stops playing. The Bombarde is borrowed from French Organs where it is a standard stop on nearly all the manuals and pedals. Having a Bombarde Manual is something of a luxury for an organist. It can be found, for example, on the organ of Westminster Abbey.
Using the manuals
Having two or three manuals makes it possible to have quick changes of sound during a piece. The player can also play on two manuals at once: one with the left hand and one with the right. This is particularly useful to make a tune louder than the accompaniment (on a piano this can be done by pressing harder). The manuals can also be coupled together, for example, pulling out the “Swell to Great” stop will make all the sounds from the Swell come out on the Great as well. On an organ with mechanical action the keys of the Swell will be seen “playing by themselves” like a pianola, but on some older organs it can be hard work for the organist’s fingers when the manuals are coupled as it makes the action very heavy.

The pedals
The notes on the pedals are arranged like the notes on a keyboard, but are obviously much bigger. The player needs to learn to play by 'feel', otherwise he will have to spend all his time looking at his feet. He plays each note, either with the toe or the heel and either on the inside of the foot or the outside. The American and British Standard organ contains 30 notes giving a range of nearly 2  octaves (C to F, or sometimes C to G: 32 notes). They are not quite in a straight line but fan out a little to make it easier to play (it is called a "radiating, concave pedalboard"). In German and French organs and organs built before 1920, the pedalboard will be straight without any fan curvature to it. Many organists find that this makes it more difficult to play. Organists need a good pair of shoes: ones which have good narrow heels and preferably pointed toes. The soles need to be fairly slippery, but not too much, so that the player can slide the foot from one pedal to another
. Organists usually like to keep a pair of shoes which are worn only for playing the organ so that the soles do not have grit or dirt from the street.
The stops
The stops on an organ console give different sounds, like the instruments of an orchestra, and have names which tell the organist what kind of sound they will produce. The stops are usually to the left and right of the organist and they are pulled out (“drawstops” or “pulls” because they are “drawn” i.e. pulled). Some organs have “tab stops” or “rocker stops” which are in front of the player and can be rocked forwards and backwards for on/off.

The stops of an organ can be divided into families.

The chorus stops are the foundation stops, the basic ones which are good for building up the big, solid sound. A diapason or principal is a chorus stop.

The flute stops sound like flutes in an orchestra. They are gentler than the diapasons and sound good for very quick and light music.

The reeds are stops like the oboe, clarinet, trumpet, fagotto, trombone. Each pipe has a reed inside. Their sound is very strong and nasal (like speaking through the nose).
The strings are quiet stops which sound like string instruments. These are stops like the violone and gamba.

There is another way of grouping the stops. Each stop will have a number underneath the name. The number may be 16, 8, 4, 2, 1 or even 2 2/3 or 1 3/5. If the number is 8 this is called an “eight foot stop”. This is the normal pitch: the note will sound as it is written, e.g. when playing Middle C the sound will be Middle C. A 4-foot stop will sound an octave higher than written, a 2-foot stop will be two octaves higher. A 16-foot stop will sound an octave lower than an 8-foot stop. 8 foot is therefore the normal pitch, and the others are added to it to make a larger, brighter sound. 16 foot stops are normal in pedal parts.

Mutation stops are stops in which a note does not sound a whole number of octaves above the normal pitch. Examples are the Tierce 1 3/5 (which sounds 2 octaves and a third above) and the Nazard or Twelfth 2 2/3 (one octave and a fifth).

Using the stops
Using the stops

An organist needs to learn which combinations of stops sound good together and how to balance them well. Each organ is different and has its own character.

The combination of stops that an organist chooses for a particular piece of music is called the “registration”. The list of all the stops that a particular organ has is called the “specification”. The specification of an organ shows the names of the stops for each of the manuals and for the pedals, as well as the list of couplers.
Each stop controls a row of pipes, called a “rank”. Each rank makes a different sound (one row for the “diapason” sound, another row for the “flute”, another for the “trumpet” and so on). The stops control the air flow through the ranks. Some stops may control more than one rank. For instance, a Mixture stop of three ranks will have 182 pipes (3 ranks of 61 pipes each) and in some organs the Celeste is a 2 rank stop. The celeste pipes are tuned slightly sharper than the rest of the organ so that, when played together with another quiet stop such as the Salicional, there will be a pleasant throbbing beat because two pipes are slightly out of tune with one another. Organ Pipes are normally made of metal or wood. High quality metal organ pipes usually contain 75 percent tin or more, and the rest is lead. The Pipes are placed on windchests inside an "organ case" in a special room called an Organ chamber
. A windchest is a box-like device which contains pallets that are opened and closed to admit air to a pipe so that it sounds. The pallets are operated by pull wires and rollers in the case of a tracker instrument but may also be operated by pneumatics or direct electric action using magnets.
There is always air being pumped into the windchest when the organ is switched on. In the days before electricity someone (an organ blower) had to pump the air into the windchest using bellows. This was hard work. Large organs would have needed more than one organ blower to do this job.

The history of the pipe organ
No other instrument has developed in such a wide variety of ways as the organ. If Bach, who lived in the early 18th century, had gone from his home in Germany to France, he would have found it impossible to play his music properly on French organs. If Couperin, who lived at the same time, had gone from his home in France to Germany, he would not have been able to play his music on the organs that Bach was using. Neither of them could possibly have played on an organ in England at the time. For one thing, English organs in the 18th century still had no pedals. This means that organists need to know a lot about what organs were like in other countries in other centuries in order to know what registrations to use when playing music by composers of the past.

The earliest organs
The earliest organs were water organs invented in Ancient Greece. The Romans used them in circuses and gladiator combats because they were loud. They were still popular in some countries a few hundred years ago, for example, in pleasure gardens.

The organ in the Middle Ages

In the Middle Ages large organs were built in the huge Gothic cathedrals in Britain. These instruments did not have different stops: all the ranks sounded at once. They were played by a slider mechanism. Only in the 11th, 12th and 13th centuries did they start to use a keyboard. The so-called Mixture Organ (or Blockwerk) still sounded several pitches at once. Very small organs called portatives (because they could be carried) were used in processions. Positives were a bit bigger and were used to accompany singing in the church. The Regal was like a portative but it had reeds and no pipes. It could be put on a table. The world's oldest organ is generally agreed to be the one built at Sion, Switzerland in the 15th century. the organ.
The organ in the Renaissance (about 1450-1600)
By about 1450, the organs that were being built in Germany and the Netherlands had two or three manuals and pedals. There were stops so that the player could choose which ranks he wanted to sound. The collection of pieces called the Buxheimer Orgelbuch (about 1470), is one of the first collections we have of organ music. French organs, too, were developing. In England, organs were quite small. Composers like John Bull, William Byrd and Orlando Gibbons wrote music for chamber organs. In the Netherlands Jan Pieterszoon Sweelinck was a very famous organist and teacher.
The organ in the Baroque period (about 1600-1750)
The Baroque period was a great period for organ music in Germany. Organs there were built on the Werkprinzip (literally: work principle) which meant that each keyboard with its pipes was built separately, like two or three different organs, although they were played from the same console. Organs like these were built by the famous Arp Schnitger (1648-1719). Many famous German composers wrote organ music, especially Johann Pachelbel (1653-1709) in South Germany and (Dietrich Buxtehude) (1637-1707) in North Germany. The great composer Johann Sebastian Bach (1685-1750) learnt from these composers and wrote some of the most famous organ music of all times. The great organ builder Gottfried Silbermann (1683-1753) lived during this time and built organs with a very beautiful tone. Instead of a keyboard called a Choir (or Chair Organ) he built an Oberwerk which was above the Hauptwerk (Great).
French organ builders at this time were very interested in colour (meaning: different sounds). Many stops had names like Cornet, Tierce and Prestant. When all the stops of the Principal chorus played together it was called the Plein jeux. This was like the medieval Blockwerk. All the reed chorus together was called Grand jeux. This would have sounded very loud and was used for dialogues and fugues. Composers included Nicolas de Grigny (1672-1703), Louis Marchand (1669-1732), Louis Nicolas Clérambault (1676-1749), Louis Claude Daquin (1694-1772) and François Couperin (1683-1733).

In England there was not much interest in developing the organ. It was used for accompanying the choir. There were no pedals. Pieces for organ were called voluntaries. Henry Purcell wrote a few organ pieces.
The organ in the Classical period: about 1750-1840
Organ composition reached a great peak in the work of J.S.Bach, but then people started to lose interest. Not many developments took place in organ-building during the Classical music period. Although Mozart played the organ and called it the “King of Instruments” he did not often write music for it. Among the organ builders at this time were Joseph and Claude-Ignace Callinet who built the organ at Notre-Dame's (St. Etienne, Loire) in 1837.

The organ in the Romantic period
The organ in 19th century Germany started to be used for imitating the sound of an orchestra. People also started to be interested in playing the music of J.S. Bach. Many Classical organs were re-built and sometimes they lost their original character. Organs in different countries started to sound the same.
In France, the organ builder Aristide Cavaillé-Coll (1811-1899) was a real genius. His organs had lots of new ideas including the Barker lever (which made it easier to play on coupled manuals) and placing families of stops on to separate chests. Organists could change their registrations quickly, pushing in or pulling out the stops that they needed. Composers included César Franck (1822-1890), Charles-Marie Widor (1845-1937) and Louis Vierne (1870-1937). The last two wrote long works in several movements which they called Symphonies because they were full of colourful sounds like those in a symphony orchestra. There were usually three manuals called Grand, Positif and Récit placed in that order (with Grand nearest to the player). The Grand had warm foundation stops and big reeds (it was like combining the classical plein jeux and grand jeux). The Positif had string stops as well as a solo reed, and the Récit had lighter reeds.
In England, Samuel Wesley (1766-1837) wrote some important organ music inspired by J.S. Bach, and his son Samuel Sebastian Wesley (1810-1876) was influenced by Continental Romantic composers such as Mendelssohn. In 1851, the organ builder Henry Willis built a large organ for Crystal Palace Exhibition. It had three manuals and a pedal board. This set the standard in English organ building for the future.

The organ in the Twentieth century
In the 19th century, many organs in England and America were placed in corners of churches where they could not be heard very well. In the 20th century, organ builders thought more about the best position for the organ, so that the sound would fill the main part of the church, the nave.
Among the most famous 20th century organ composers are Marcel Dupré (1886-1971), Jehan Alain (1911-1940) and Olivier Messiaen (1908-1992) in France, Paul Hindemith (1895-1963) in Germany, and Edward Elgar (1857-1934) and Herbert Howells (1892-1983) in England. The Czech composer Petr Eben (1929-2007) was one of the most important organ composers at the end of the 20th century, writing in an individual style.
The organ as an accompanying instrument
As well as the obvious use of the organ for accompanying church choirs and congregational singing the organ has often been used to accompany instruments. In the Baroque period small organs were used to accompany solo instruments or small groups of instruments or orchestras. This kind of accompaniment was called continuo. Occasionally composers have written organ concertos in which the organ is the solo instrument and the orchestra accompanies. Handel wrote several of these. In modern times Francis Poulenc wrote an organ concerto. There is an important organ solo in Symphony no 3 by Saint-Saëns. Other orchestral works sometimes have organ parts. Organists have often made organ “transcriptions”, i.e. arranged music written for other instruments so that it can be played on the organ.

Related pages
 Electronic organ
 Water organ
 Organ (music)
 Organ tablature

Footnotes

References
 “Organ” by Arthur Wills, London 1984 ()
Other websites
 Pipedreams Listen to pipe organ music, organ pictures and other information
 Sacred Classics  Online radio program of pipe organ and choral music
 The Pipe Organ
 Organlive.com Listen to streaming pipe organ music from a library of more than 7700 tracks.

Keyboard instruments
Former good articles
The words Celt and Celtic can have many meanings.  

Pronounced /kel-(tik)/:

Ancient Celtic religion, a pagan religion.
Celt, either ancient or Modern Celts
Celtic languages, descending from the Proto-Celtic language, spoken by these people and their modern descendants
Celtic mythology
Celtici, Celts from ancient Lusitania (which is now Portugal). (See also Celtiberians for a Celtic people on the Iberian peninsula)
Irish music, folk music that started in "Celtic" cultures.
Celtic art, art from the "Celtic" culture
Celtic Christianity
Celtic calendar

The following should only be pronounced /selt(ik)/:

Boston Celtics professional basketball team
Celtic F.C. a football team in Glasgow
Manx, or Manx Gaelic, (known in Manx as "Gaelg" or "Gailck"), is a language spoken in the Isle of Man.

It is a Celtic languages of the Gaelic language family. It is in the same family as Scottish Gaelic and Irish Gaelic.

Manx is spoken mainly by people who learn it through interest. It died out as a natural community language in the 20th century. The last of the old native speakers died in 1974.

Manx is protected under the European Charter for Regional or Minority Languages.

History 
Manx began to separate from Middle Irish in about 900–1600 AD, and it is called Yn Ghaelg / Yn Ghailck by its speakers. There became fewer and fewer speakers during the 19th century, when the language was replaced by English. In 1901, 9% of the people in the Isle of Man were said to speak Manx, but in 1921, the number had dropped to only 1%.

Today, Manx is used as the only language taught at five of the Isle of Man’s preschools. Manx is taught as a second language at all of the Isle of Man's primary and secondary schools.
Today 
There is now a school that teaches all of its lessons in Manx. The census of 2001 said that 2.2% of the population of the island could speak the language. There are currently 54,000 second-language speakers, mainly on the Isle of Man.

References

Celtic languages
Languages of Europe
The Goidelic languages or Gaelic languages are a group of  Celtic languages. They are spoken in Scotland, Ireland and the Isle of Man.

There are three Goidelic languages:

 Scottish Gaelic (Gàidhlig)
 Irish (Gaeilge)
 Manx (Gaelg)

Celtic languages
Languages of Europe
The Manx is a breed of domestic cat. It either has no tail at all, a "rumpy", or it has a very short tail, a "stumpy". This is because of a natural difference in spine length. The back legs are also longer than the front legs. The breed comes from the Isle of Man, where it was found as early as three hundred years ago.

The Manx's character is nervous. The Manx's appearance is round on the whole. They are skilled hunters.

Other websites 

Cat breeds
Natural cat breeds
Horn can mean several things:

Horn (anatomy), something some animals have on their heads
Horn (musical instrument)
A car has a horn on the steering wheel to warn people of danger.

Places
Horn, Switzerland, a place in Switzerland
Horn of Africa, a peninsula in East Africa

Basic English 850 words
Agave is a type of succulent plant from Mexico and the southwestern parts of the United States. They have thick, sharp leaves. Agave plants flower only once, produce seeds and then die. Before flowering they usually live for 10 to 25 years. Because they live for a long time they are sometimes called "century plants".

Agave is used to make things like tequila, agave syrup and pulque. They were an important food for many indigenous people in the southwestern United States, such as the Navajo and the Hokoham.

Images

Agavaceae
Apple sauce (or applesauce) is a sauce made from stewed and mashed apples.  Peeled or unpeeled apples can be used and different spices or additives like cinnamon can be used.  

Sugar or high fructose corn syrup is often added to the applesauce to sweeten it.  Applesauce can be fine or coarse textured, and can include large pieces of apple.  It is easy to make at home, and it is also sold ready-made in supermarkets. 

It is a common food or snack for children and people who have problems eating solid food. Parents often feed it to their babies because teeth are not needed to eat it.

In the United Kingdom, apple sauce is normally used as a sauce for ham, pork, and gammon.

Use and availability
Apple sauce was once a food prepared for winter, since it keeps well.

Apple sauce can be used in baking as a substitute for fat (such as butter or oil) or eggs.

References

Apple products
Sauces
Charles Francis Richter (April 26, 1900 – September 30, 1985) was an American seismologist (someone who studies earthquakes) and a physicist. He is known for creating the Richter scale of magnitude, which says how big an earthquake is.

Childhood 
Richter went to work at the Carnegie Institute in 1927 after Robert Millikan offered him a position as a research assistant there, where he began a collaboration with Beno Gutenberg. The Seismology Lab at the California Institute of Technology wanted to begin publishing regular reports on earthquakes in southern California and had a pressing need for a system of measuring the strength of earthquakes for these reports. Together, Richter and Gutenberg devised the scale that would become known at the Richter scale to fill this need, based on measuring quantitatively the displacement of the earth by seismic waves, as Kiyoo Wadati had suggested.

Other websites
Charles Richter interview, at USGS
Charles F. Richter Papers, Caltech Archives
1900 births
1985 deaths
American physicists
Scientists from Ohio
1104 was a leap year.

Events 
 September 3 – St. Cuthbert reburied in the Durham Cathedral
 The Venice Arsenal, is founded in Venice.
 Alfonso I of Aragon becomes King of Aragon and Navarre.
 Historian Guibert of Nogent becomes abbot of Notre Dame de Nogent.
 Baldwin I of Jerusalem captures Acre.
 Baldwin II, count of Edessa, is taken prisoner by the Seljuk Turks at the Battle of Harran; Tancred becomes regent.
 Kilij Arslan I, Sultan of Rüm, starts a war with the Danishmends.
Charles II (29 May 1630 – 6 February 1685) was king of England, Ireland, and Scotland from 1649 to 1685. His father was Charles I, who was executed after losing a war with Parliament.

Early life 
Prince Charles was the king's eldest son. As a little boy, he was made Prince of Wales as a sign that he would one day be king.

By the time he grew into a young man, his father was already at war with Parliament in the English Civil War.

Prince Charles did not take much part in the fighting. His mother, Henrietta Maria, was French, and she took her children to France when the war broke out, to keep them safe.

Prince Charles was only eighteen when he heard that his father was dead.

This made him King, and he started calling himself King Charles II immediately. However, Parliament was still in control of Britain and would not let him take his throne because after Charles I's execution, Oliver Cromwell became the Lord Protector of Britain from 1653 to 1658.
The King's escape 
In 1651, Charles II returned to Britain and fought Parliament at the Battle of Worcester.

He was defeated, but is supposed to have escaped by hiding in an oak tree.

Later, he was forced to disguise himself as a servant. A young lady called Jane Lane helped him to escape, and he sailed to the Netherlands to re-join his supporters. He kept his own royal court there until 1660.

The Restoration 
While Charles was in Holland, Britain was being ruled by Oliver Cromwell. He was chosen as leader of the country by Parliament. When Cromwell died in 1658, his son Richard was chosen to be the next leader.

Richard Cromwell was not the man his father had been. Charles II was asked to come back and rule Britain. In 1660, Charles II was brought back to Britain and took his throne. This was the English Restoration.

Many of his enemies were punished for having executed his father and fought against him, but Richard Cromwell was allowed to go and live quietly away from London.