AcharyaChanakya/simple-wikipedia huggingface dataset:
Set theory was created around 1874 by Georg Cantor. It had to be made better because collections of objects can cause problems if we work with them without explaining them better. Russell's paradox was one of the problems. Think about the set of all sets that are not members of themselves. If it were inside itself, then the rule which defines it would mean that it is "not" inside itself. But, if it were not inside itself, then the rule which defines it would mean that it "is" inside itself. This was a serious problem, and it meant that the old set theory was broken.
It was improved by people including Zermelo and Bertrand Russell.
Set theory begins by giving some examples of things that are sets. Then it gives rules in which you can make other sets from the already known sets. Collections of objects that are not sets are called (proper) classes. It is possible to do mathematics using only sets, rather than classes, so that the problems that classes cause in mathematics do not occur.
A binary relation between two sets is the subset relation, also called "set inclusion". If all the members of set are also members of set , then is a "subset" of , marking . For example, is a subset of , but is not. From this example, it is clear that a set is a subset of itself. In cases where one wishes to not to have this, the term "proper subset" is meant not to have this possibility.
The self-considering objects in set theory was considered too, with some example numbers being 1={1}, 2={1, 2}, 3={1, 2, 3} and so on.
Bangor is a city name found in several countries.
Demo (music)
A demo, in music, is the first version of a song or album.
It can also refer to an album made by the band as a "sample" in hopes of getting a contract with a record label.
Breton ("", in Breton) is a Celtic language spoken in Brittany, in the north-west of France. Breton is closely related to the Cornish language of Cornwall spoken in south-west Great Britain. It is less closely related to Welsh, and the Goidelic languages of Scotland, Ireland and the Isle of Man. The Breton language has about 240,000 speakers, but this number is falling very quickly due to the French government's policy of using French. As such, Breton is considered to be an endangered language.
The Celtic languages are a language family inside of Indo-European languages. There are six Celtic languages still spoken in the world today, spoken in north-west Europe. They are divided into two groups, Goidelic (or Gaelic) and the Brythonic (or British).
The three Goidelic languages still spoken are Irish, Scottish, and Manx. Scottish is the main language spoken in parts of north-west Scotland and Irish is the main language spoken in the Gaeltacht in Ireland. Manx is spoken mainly by people interested in the language.
The three Brythonic languages are Welsh, Cornish, and Breton. Of these Cornish became extinct in the 18th century but people have started speaking it again now. Welsh is spoken everywhere throughout Wales, but is mainly first language for people in the western part of Wales, in the area some people call the Bro Gymraeg. Breton is spoken mainly in west Brittany, and is the only Celtic language not mainly spoken on the islands of Great Britain and Ireland. Because Brittany is part of France, the language is in danger of becoming extinct, just like Cornish, and there are ongoing efforts to prevent this from happening.
Scottish Gaelic also has a native community of speakers in Canada where it was once very widely spoken, and there are Welsh speakers in Patagonia, Argentina.
Salem, Tamil Nadu
Salem is a district capital and major city in Tamil Nadu, in India. It is known for its steel plants, factories which make steel.
Salem online yellow pages Directory
Hunger strike
A hunger strike is a way that people protest by not eating. Many people have done this to get people's attention, especially the attention of leaders.
Sometimes, hunger strikes are done by people who are in prison. In this case, the hunger strikes are sometimes ended by force feeding, when the prisoners are fed against their will through a feeding tube.
Hermitage Museum
The Hermitage Museum (Эрмитаж) in St. Petersburg, Russia is one of the largest and oldest art galleries and museums of human history and culture in the world. The vast Hermitage collections are displayed in six buildings, founded by Catherine II of Russia in 1764 and opened in public since 1852. The main building is the Winter Palace. This was the official residence of the Russian Tsars.
Strong points of the Hermitage collection of Western art include Michelangelo, Giambattista Pittoni, Leonardo da Vinci, Rubens, Van Dyck, Rembrandt, Poussin, Claude Lorraine, Watteau, Tiepolo, Canaletto, Canova, Rodin, Monet, Pissarro, Renoir, Cézanne, Van Gogh, Gauguin, Picasso, and Matisse. There are several more collections. Among the collections are the Russian imperial regalia, an assortment of Faberge jewellery, and the largest existing collection of ancient gold from Eastern Europe and Western Asia.
A population of cats lives on the museum grounds. They are named the Hermitage cats. They are an added attraction for tourists.
Dirt may refer to:
The Boeing 747 is a jet airliner developed by Boeing in 1969. It is made by Boeing Commercial Airplanes. The Boeing 747 has more than one aisle, which means it is a wide-body aircraft. It is often called the "Jumbo Jet" or "Queen of the Skies". The Boeing 747 is one of the easiest planes in the world to recognise. It was the first wide-body aircraft ever made. The first type of 747 was two and a half times the size of the Boeing 707. The Boeing 747 made its first flight for an airline in 1970. The 747 could carry more people than any other aircraft for 37 years, until the Airbus A380 was made.
The 747 is a double deck plane. It can carry people, cargo and many other things. Boeing designed the 747's upper deck to be a first class lounge or just extra seats. They also designed the upper deck so that the aircraft could be changed into a cargo plane easily. This was done by removing seats and putting in a cargo door at the front of the plane. Boeing did this because they thought that supersonic airliners would become much more popular than the 747 and other subsonic airliners. However, they thought that subsonic cargo planes would always be popular. It was thought that the 747 would become unpopular after 400 were sold. However, 1,000 planes had been made by 1993, so it stayed popular. By September 2012, 1,448 aircraft had been built. 81 747-8s were still waiting to be built.
The 747-400 is one of the fastest airliners being used today. It usually flies at Mach 0.85–0.855 (up to ). It can fly for 7,260 nautical miles (8,350 mi or 13,450 km). The newest version of the 747, the 747–8, is now being made.
The 747 will be replaced by the Boeing Y3 (part of the Boeing Yellowstone Project) eventually.
In 1963, the United States Air Force began to look for a very big plane to transport things. At that time, they were using the Lockheed C-141 Starlifter. However, the Air Force thought that a much bigger plane which could carry more cargo was needed. The Air Force called the big plane the CX-Heavy Logistics System (CX-HLS). It needed to be able to carry of cargo and travel at Mach 0.75 (). It also had to be able to fly for while carrying of cargo. The cargo bay had to be wide, high and long. There had to be doors for the bay at the front and the back of the plane.
The Air Force also wanted the plane to have only four engines. This meant that new engines had to be made. On May 18, 1964, Boeing, Douglas, General Dynamics, Lockheed and Martin Marietta designed a plane. General Electric, Curtiss-Wright and Pratt & Whitney designed the engines. The Air Force liked Boeing, Douglas and Lockheed's designs. They also liked General Electric and Pratt & Whitney's engine designs.
In 1965, Lockheed's plane and General Electric's engines were used for the C-5 Galaxy. At that time, it was the biggest military cargo plane in the world.
The idea for the 747 was thought of in the 1960s. Jets like the Boeing 707 and Douglas DC-8 had made it easy to travel long distances. Juan Trippe from Pan American World Airways (Pan Am), asked Boeing to build a plane which was more than two times bigger than the Boeing 707. At this time, airports were very busy. Trippe thought that a big plane could help make them quieter.
In 1965, Joe Sutter was told to design this new plane. It was called the 747. Sutter asked Pan Am and other airlines what they would like from the plane. At the time, it was thought that supersonic aircraft would replace the 747. Because of this, Boeing made the 747 so that it could easily be turned into a cargo plane if the passenger version became less popular.
In April 1966, Pan Am bought 25 747-100 planes. The order cost US$525 million. Since Pan Am was the launch customer, Pan Am had a big say in the design and making of the 747. No other airline before then or since then has been able to have so much influence over a plane.
The design that Boeing made for the Air Force in 1963 was not used for the 747. However, Boeing made some new things for the Air Force which were used in the 747. The first design had two full decks. However, in 1966, this was changed to only one deck. The cockpit was put above the deck, which made a "bulge". There was a small space behind the cockpit which people could sit in. At first, it was a "lounge" area with no seats.
Planes as big as the 747 needed high-bypass turbofan engines. High-bypass turbofans can produce twice the power of turbojets, and also use a lot less fuel. General Electric made the first of these engines. However, it was making the engines for the C-5 Galaxy. It did not make engines for airliners until later. Pratt & Whitney was also working on this type of engine. In 1966, Boeing, Pan Am and Pratt & Whitney designed a new engine, the JT9D, for the 747.
Boeing used some special devices to make the plane make more lift. This was done so that the 747 could take off from shorter runways. The 747 has a lot of flaps on the wing. The flaps make the wings bigger by 21 percent. They also make 90 percent more lift when they are used.
Boeing tried to give the 747 to Pan Am by the end of 1969. This meant that Boeing only had 28 months to design the aircraft. The people who worked on the 747 had the nickname "The Incredibles".
Boeing did not have a factory big enough to make the new plane. Boeing thought about putting their factory in 50 different cities. They eventually decided to build their factory in Seattle, near Everett, Washington. Boeing bought the factory in June 1966.
Designing the 747 was very difficult. Building its factory was also not easy. Boeing's president, William M. Allen, asked Malcolm T. Stamper to be in charge of the building of the Everett factory. He was also asked to begin building the 747. The factory is the biggest building ever built (by volume). It has been made bigger many times so that Boeing can build even bigger planes.
Before the first 747 was put together, parts and systems were being tested. In one important test, 560 volunteers evacuated a replica of a 747 cabin using the emergency chutes. The first evacuation took two and a half minutes. However, the FAA says that the maximum time for an evacuation is 90 seconds. Many of the volunteers were hurt. More evacuations happened, and they eventually reached the 90 seconds. However, they also caused a lot of injuries. Evacuating from the top deck of the plane was difficult. Instead of using the usual slides, the volunteers had to leave the plane using a harness. The plane's taxiing also had to be tested. Boeing made "Waddell's Wagon" (named after a 747 test pilot, Jack Waddell) to train the pilots. "Waddell's Wagon" was a replica of a 747 cockpit which was put on the roof of a truck. This helped pilots to learn how to taxi the plane.
On September 30, 1968, the first 747 was finished. People from the 26 airlines that had ordered the 747 were also there. The 747 first flew on February 9, 1969. Its pilots were Jack Waddell and Brien Wygle. There was a small problem with the flaps, but the 747 handled well.
The testing was delayed because of some problems with the JT9D engines. For example, the engines stalled if the throttles were moved too quickly. This meant that 747s could not be delivered for many more months. 20 planes were stuck at the factory while they were waiting on engines. On December 13, 1969 the test plane was being taken to have some changes made to it. The pilot, Ralph C. Cokely landed too early and did not reach the runway. One of the landing gears was ripped off, and two of the engines were damaged. However, Boeing took the 747 to the 28th Paris Air Show in mid-1969. There, the public saw the 747 for the first time.
Designing the 747 and building the new factory cost a lot of money. This meant that Boeing had to borrow a lot of money from a bank. Just before the first aircraft was finished, Boeing had to keep asking for more money. If Boeing was not given this money, the company could have collapsed. Boeing was in over $2 billion in debt. Allen said, "It was really too large a project for us." However, the 747 program was a success. Boeing was the only company to make very big planes for many years.
The very first time a 747 was used by an airline was on January 22, 1970. Pan Am used it to fly from New York to London. The flight was supposed to happen on the evening of January 21. However, the engines on the aircraft overheated. Pan Am had to find another plane, which took six hours.
The 747 did quite well when it first began to be used. Some people thought that airports would not be able to handle such a big plane. However, they could. There were some problems, but they were quite small and they were fixed quickly. After Pan Am began to use the plane, other airlines began to use their 747s. Boeing thought that a lot of 747s would be sold because airlines wanted a plane which could fly for a long time, not because it was so big.
The recession of 1969-1970 was very bad for Boeing. For over a year after September 1970, it only sold two 747s. None were sold to an American airline for over three years. Some airlines did not have enough passengers to fly the 747. Therefore, they replaced them with the McDonnell Douglas DC-10 and Lockheed L-1011 TriStar. American Airlines eventually only used its 747s to carry cargo. In 1983, AA gave its 747s to Pan Am. Pan Am gave American Airlines some smaller planes. Delta Air Lines also stopped using its 747s after many years. Delta would later merge with Northwest Airlines, which operates 747s.
Flights which landed in smaller cities became quite usual in the 1980s. This was bad for the 747. However, many airlines still used the 747 to fly across the Pacific.
The first type of 747 was called the 747–100. After this, Boeing made the , which has a higher MTOW (maximum takeoff weight), and the (Short Range). The -100SR could carry more passengers. A higher MTOW means that the plane can carry more fuel and fly further. In 1971, Boeing made the . It had better engines and a higher MTOW. Airliner and cargo versions of the were made. The 747SP (special performance) was also made. It began being used in 1976.
In 1980, Boeing made the 747–300. The first 747-300 was made in 1983. Its upper deck was longer, it flew faster and it could hold more passengers. The −300 was first called the 747SUD for "stretched upper deck". Then it was called the 747-200 SUD, then the 747EUD, and finally it was called the 747–300.
In 1985, Boeing began to design the 747-400. This type has a glass cockpit. This meant that only two people were needed in the cockpit. It also had new engines and a new cabin. The workers who made the 747-400 were not very experienced and Boeing wanted them to work for longer than they needed to. This meant that there were some problems with the first 747-400s. The −400 began being used by airlines in 1989.
In 1991, 1,087 passengers were taken to Israel on a 747. This was a part of Operation Solomon. The Antonov An-225 cargo transport is the world's biggest plane. The Hughes H-4 Hercules has the biggest wingspan, but it only flew once.
Since the 747-400 was made, many more types of 747 have been suggested. Boeing said that they would make the 747-500X and in 1996. These new planes would have cost more than US$5 billion to design and make. Airlines did not like it enough, so Boeing decided not to make the planes. In 2000, Boeing said it would make a 747X to rival the Airbus A3XX. However, airlines did not like the 747X enough, so it was cancelled. A year later, Boeing began concentrating on the Sonic Cruiser. The Sonic Cruiser was stopped, so Boeing then focused on the Boeing 787 Dreamliner. Some of the ideas that Boeing had for the 747X were used on the 747-400ER.
In 2004, Boeing said that it might work on the 747 Advanced. Boeing decided to go ahead with this. The 747 Advanced used some things from the 787 to make the 747's design more modern. The 747 was the world's biggest passenger plane until the Airbus A380 was finished in 2007.
On November 14, 2005, Boeing said it had changed the name of the 747 Advanced to the Boeing 747-8. The last 747-400s were made in 2009. On February 8, 2010, the 747-8 Freighter made its first flight. Cargolux got the first 747–8 in 2011. Eventually, the 747 will be replaced by "Y3".
The Boeing 747 is a big, wide-body airliner. It has four engines on the wings, and the wings are swept at 37.5 degrees, so the 747 can fly very fast. The sweep also means that the 747 does not need any special hangars.
Since the cockpit is above the main deck, it makes a "hump", and because it is so high, the plane can have a cargo door installed at the front.
The 747-100 can fly for 5,300 nautical miles (6,100 mi, 9,800 km), and the 747-8i can fly for 8,000 nmi (9,200 mi, 14,815 km).
The 747 has special flaps, which allow the 747 to fly slowly and land on normal runways. A 747 can carry a fifth engine on the wing, but it cannot be used.
The 747-100 was the very first type of 747, which was made in 1966. The 747–200, the next version, was made in 1968. The 747-300 was made in 1980 and the 747-400 was made in 1985. The newest version, the 747–8, was announced in 2005. These types also have smaller sub-types. The International Civil Aviation Organization (ICAO) names these planes by combining the model number of the plane with its type number. For example, the 747-100 is "B741" and the 747-400 is "B744".
The first 747-100s had six windows on the upper deck. Later, airlines began to use the upper deck to hold more people instead of using it as a lounge. Boeing then made an upper deck with ten windows. Some −100s had the new ten-window upper deck installed after the plane was made (retrofitted). The −100 had Pratt & Whitney JT9D-3A engines. Boeing did not make a freighter version of the 747–100, but some airlines have turned some 747-100s into freighters. 167 747-100s were made.
After Japanese airlines requested an aircraft to fly routes between major cities in Japan, Boeing produced the -100SR. This model flies shorter distances, but is able to carry more passengers. The first -100SR started flying with Japan Air Lines (JAL) on October 7, 1973. The -100SR had four General Electric CF6-45A2 or Pratt & Whitney JT9D-7A engines. A total of 7 -100SR were produced.
Later, Boeing designed a type of -100SR with the ability of taking off with greater weight. This was the -100BSR. It was first delivered to All Nippon Airways (ANA) on December 21, 1978. 20 -100BSR were delivered to JAL and ANA.
In 1986, 2 -100BSR with stretched upper deck (SUD) from the -300 series were delivered to JAL. It was the last -100SR/BSR ever built. The last delivery was to JAL, in September 1986. There were a total of 29 -100SR/BSR made.
The 747SP (SP means special performance) is designed as Pan Am and Iran Air both wanted a wide-body plane that can fly long distances; from New York to the Middle East (for Pan Am) and Tehran to New York (for Iran Air). The first 747SP was produced on May 19, 1975. Its first flight was on July 4. On this flight, it flew at a top speed of Mach 0.92 (). It started flying people on April 25, 1976, after being delivered on March 5. Now, it is not often used.
A total of 45 747SP were made and used by airlines like Qantas, China Airlines, Air China, and South African Airways.
After the -100 were made, Boeing started making -200. The -200 has a longer range, but still carries the same number of people. This is because airlines said the -100 could not fly long distances. The -200 is made in passenger type (-200B), freighter type (-200F), Combi type (A plane that carries both cargo and people; -200M) and convertible type (a plane that can be easily changed to carry cargo; -200C).
The first -200B was finished on September 10, 1970 before its first flight on October 11 and finally, it started being used by KLM. Boeing then started making the other types of -200. The -200F first flight was on November 30, 1971, 7 days after it was finished. It was then delivered to Lufthansa.
The -200C first flew on March 23, 1973 before being delivered to World Airways in May the same year. Finally, the -200M had its first flight on November 11, 1974 before being delivered to Air Canada.
There was a total of 393 -200 series ever made,which includes 225 -200B, 78 -200M, 73 -200F, 13 -200C and 4 military.
The 747-300 is a stretched upper deck version of the 747–200. It was designed to fit more passengers on the upper deck. The 747-300 also has updated General Electric CF6-80C2 engines. Otherwise, there are not many differences between the 747-200 and 747–300. The 747-300 has a length of 231 feet 10 inches and a wingspan of 195 feet 8 inches.
The 747-400 was the next-generation Boeing 747 introduced in 1989. It is the best-selling variant of the Boeing 747. It includes improvements over the 747-300 including new engines, and new winglets, which improve fuel efficiency. Its length is the same as the 747-300 but the wingspan has been increased to 211 feet 5 inches. The 747-400 retains the same longer upper deck as the 747-300 (excluding frieghter versions), and came in six variants: the 747–400, 747-400F, 747-400M, 747-400D, 747-400ER, and the 747-400ERF.
The most recent variant of the Boeing 747 was announced in 2005 and released on 2011. It includes a longer stretched upper deck, a new Boeing Sky Interior, an updated flight deck, new wings based on ones from the Boeing 787 Dreamliner, and new GEnx turbofan engines. It totals 250 feet in length, making it the longest commercial passenger jet ever built. The 747-8 comes in two variants: 747-8I and 747-8F (freighter).
Richard Trevithick (April 13,1771 - April 22, 1833) was a Cornish inventor and engineer. He is best known for making the first working steam locomotive. However, it was designed to be a road vehicle, not a railroad one.
Trevithick was from the heart of a big mining area in Cornwall, U.K. His parents were Richard Trevithick (1735-1797) and Ann Teague (d. 1810.) In 1797, Trevithick married Jane Harvey. He died of pneumonia in 1833.
Wasilla, Alaska
Wasilla is a small city in the U.S. state of Alaska, about 43 miles from Anchorage. It is one of the ten largest cities in Alaska. Sarah Palin was once mayor and owns a house with her family there.
The city's population was 7,831 at the 2010 census.
Rantoul, Illinois
Rantoul is a village in Champaign County, Illinois, United States. Almost 13,000 people were living in Rantoul as of 2000. Rantoul has an area of 7.4 square miles.
Winter Springs, Florida
Winter Springs is a city in Florida. It is sometimes considered a suburb of Orlando.
Fredericton, New Brunswick
Fredericton is the capital city of New Brunswick, Canada. It is filled with rich history. Fredericton is on the Saint John River. There is a playhouse. There are scenic walking trails. Frederiction is the capital of New Brunswick. The population of Fredericton was 1,886 at the 2011 census.
Fredericton is known as a cultural and artistic city in New Brunswick. The city hosts an annual Harvest Jazz & Blues Festival which attracts both regional as well as international jazz, blues, rock, and world musicians.
Clearwater is a city in Florida, it is in the Tampa Bay area. It is the county seat of Pinellas County.
The first Hooters restaurant opened here in 1984. The Church of Scientology's international headquarters is also in the city.
Jordanhill railway station
Jordanhill railway station is in a suburb of Glasgow, Scotland. It is a station where passenger trains stop on the First ScotRail railway line. The station opened on August 1, 1887 as part of a different railway line.
On March 2, 2006, a new article on the Jordanhill railway station became English Wikipedia's one-millionth article.
A googolplex is the number 10, equivalent to 10 or 10 or
Like the number "googol", "googolplex" was thought of by Milton Sirotta, the nephew of mathematician Edward Kasner.
The company Google named their headquarters, the Googleplex, after the number.
A googolplexplex or googolplexian is a 1 followed by a Googolplex amount of zeros which is 10 (10 ).
Flint, or flintstone, is a kind of sedimentary rock, made of silica.
Bands of flint are found embedded in chalk and other kinds of soft limestone.
When the chalk is eroded, the hard flint nodules survive as pebbles on a shingle beach. It may happen that the pebbles later get cemented into another rock, such as a puddingstone. In this way, they make up a sedimentary rock for the second time.
Flint is a cryptocrystalline (means you can't see the crystals) form of the mineral quartz. It is a variety of chert. It occurs as a line of knobbly masses in chalk and some limestones. Inside the nodule, flint is usually translucent, and can be various colours. A thin layer on the outside of the nodules is usually different in colour, typically white and rough in texture.
Flintstones often have a rough lumpy surface but when they are broken, they look like dark glass. It has been one of the most useful types of stone to humankind.
Flint was used by hominins for over three million years. Stone tools found at Lake Turkana in Kenya, are dated as 3.3 million years old. This predates the genus "Homo" by half a million years. The oldest known "Homo" fossil is 2.8 million years old compared to the 3.3 million year old stone tools.
When flintstones are broken, they have a sharp edge which could be used as a knife, or a scraper. When flint and an iron-containing material such as pyrite or steel are hit together, they can make a spark. For many centuries, flint was one of the main ways for people in many countries to make fire. People would carry a little box called a "tinder box" which had some tinder along with flint and pyrite or steel. The tinder was used to catch the spark and start a fire. Tinder could be sawdust, cloth, grass or bark. Flints were later used to make a spark to fire a gun. A gun that used flint was called a "flintlock" gun.
Flintstones are used in some countries for building. In England the flintstones used for building were often "knapped" which means they were broken to show the inside, like the stones used for the tower of Long Melford Church (below). This gave a better finish to the building that the dull knobbly stones would have made.
Valley Center, California
Valley Center is a census-designated place in San Diego County, California. It has a population of 9,277 people.
Newbridge, County Kildare
Anaheim, California
Anaheim is a city in the United States. It was founded by German immigrants in 1857. It is the home of Disneyland, and two professional sports teams, The Los Angeles Angels of Anaheim (baseball) and the Anaheim Ducks (ice hockey). In 2012, there was a riot following a police officer shooting a man.
A chair is a piece of furniture. It is used for sitting on and it can also be used for standing on, if you can't reach something. They usually have four legs to support the weight. Some types of chairs, such as the bar-stool, have only one leg in the center. Those chairs are usually able to spin. Sometimes chairs have armrests. These chairs may be called armchairs. There are many types of chairs such as Windsor chairs and rocking chairs. There is another type of chair called a sofa or settee.
Hercules is a hero in Roman mythology. He is a mortal son of Alcmene and Zeus. Hercules is known for his great strength. In Greek mythology he is named Herakles, but he has some different stories.
The name Hercules (Latin "Herculēs") comes from the Etruscan Hercle. He was an Etruscan hero who was the equivalent to the Greek hero Herakles.
In one of the more well known stories of Hercules, he had to complete twelve tasks. These tasks were:
Hercules is also a character in Marvel Comics. He was an ally of the mighty Thor. He is the leader and a founding member of the super team the Champions. He was created by Stan Lee and Jack Kirby in 1962.
Hercules also appears in the 1997 Disney movie of the same name, in which he is voiced by Tate Donovan.
Navigation is the methods used to learn where someone is and how to go to another place. Since this is easy when landmarks are visible, the word is often limited to the methods ships or aircraft use. The word "navigation" was invented in the 15th century from the Latin word "navis" which means "ship" and is found in other Indo-European languages. Navigation is literally "art of ship mastery" but is also used for 'finding one's way'. The Global Positioning System is the main tool for it.
One type of navigation was made by the Polynesians and is called Polynesian navigation. Polynesians used different things found all around them to find their way across large areas of open ocean. Other early people also learned how to travel large distances using the natural world. For example:
An example of people who used the stars were the Vikings. They knew that the star called Polaris (the North Star) does not change location and points to the north. They would then know the latitude (distance from the equator), by measuring the angle between Polaris and the horizon. They also used animals, especially birds, to know if land was nearby. They also knew that specific kind of clouds form near land and that waves are different near land than at high seas.
As time went by better methods of navigation were invented or discovered. Some of these methods are:
Hercules (1997 movie)
Hercules is a 1997 American animated musical movie based on the legendary Greek mythology hero Heracles (known in the movie by his Roman name, Hercules), the son of Zeus in Greek mythology. The movie was directed by Ron Clements and John Musker, and was produced by The Walt Disney Company. It is the 35th animated movie in the Walt Disney Animated Classics series.
"Go the Distance" was nominated for both the Academy Award for Best Original Song and the Golden Globe Award for Best Original Song. It lost both to Celine Dion's hit "My Heart Will Go On" from "Titanic".
The Karate Kid is a 1984 American drama movie starring Ralph Macchio and Pat Morita. It tells the story of a boy named Daniel (Macchio) who moves with his mother from New Jersey to Los Angeles, California. Daniel has trouble adjusting and is victimized by a gang of bullies at his school. Mr. Miyagi (Morita), the handyman from the apartment building Daniel lives in, teaches Daniel martial arts, so he can fight the bullies in a tournament. In the song "You're the Best", the Roland Juno-106 patch "Brass" was heard. The movie was very successful and was compared to the boxing movie "Rocky". It was followed by three sequels: "The Karate Kid Part II", "The Karate Kid Part III", "The Next Karate Kid" and a remake in 2010.
Crazy Horse (born about 1838 – died September 5, 1877) was an Oglala Sioux Native American chief. There is a huge sculpture being carved of him in South Dakota, United States.
When Crazy Horse was first born he was given the name 'Curly'. When he was young, he had a vision when he was not supposed to and his family did not know where he was. His father found him and was very unhappy at what young Curly had done.
As Crazy Horse grew into a man, he was given his father's name Crazy Horse. His father then changed his own name to Worm.
Crazy Horse had good medicine, so he was never killed when he went into battle. He led his people to the Little Bighorn river in northern Montana to join forces with other Sioux bands like the Hunkpapa and Miniconjou, and with other tribes like the Cheyennes and Arapahos. There they fought General George Armstrong Custer, killing and defeating him and his many horsemen.
Eventually Crazy Horse made a tough decision to lead his people, the Oglalas, to a reservation because they were starving. Game was scarce and the bison (buffalo) were nearly gone. He had no choice but to leave the Black Hills. When he arrived at Fort Robinson, he was forced to give up his weapons and horses. This made him very unhappy. One day, even though he was granted time to go on a hunt, he was lied to and, trying to get away, he was stabbed in his liver and died later that night, thus ending the Great Sioux War.
"Once I moved about like the wind. Now I surrender to you and that is all"
Quote by Geronimo, Chief of the Apaches .
The Sioux Royal Family, the House of Thasunke Witko, are descendants of Crazy Horse. A queen, Queen Wakiyan, was elected Queen of the Kingdom of Lakota (in Sioux, "Oglala Oyanke") and of the Oglala Sioux, and tried to improve the economy at the Pine Ridge Reservation with creativity and imagination, and to bring the Sioux forward into modern times;however, a conspiracy of jealous chieftains who were both male chauvinists opposed to having a female leader and also a corrupt group of men jealous of their own power and who prefer to preside over the poverty of the Sioux People, ruthlessly trumped up false allegations in order to depose this good queen.
According to Frederick Hoxie's 'Encyclopedia of North American Indians' Crazy Horse was the third in his male line of descent to bear the name of Crazy Horse, which in Oglala is Tasunke Witko. Tasunke Witko III was the son of Rattling Blanket Woman and Tasunke Witko II. He married three times: 1st to Black Buffalo Woman, 2nd to Black Shawl, and 3rd to Nellie Larrabee (Laravie). Only his second wife, Black Shawl, bore him any children: a daughter named They Are Afraid of Her, who died aged three.
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He-Man and the Masters of the Universe
He-Man and the Masters of the Universe was a cartoon series, that first came out in 1983. It aired in first run syndication. It was based on a popular toy line and told the story of Adam, who was prince of the planet, Eternia. Prince Adam had a magic sword that could turn him into He-Man, the most powerful man in the universe. He-Man along with, Battle Cat, Teela, Man-At-Arms, and Orko, fought Skeletor, who wanted to take over the universe. It was very popular and inspired 2 more shows, one made in the early 1990s and another in 2002. There was also a spin-off called "", which was about He-Man's sister.
Fantasia Barrino
Fantasia Barrino (born June 30, 1984) is an American singer. She was the winner of the third season on "American Idol".
Cabrillo Beach
Cabrillo Beach is a historic beach in San Pedro, California.
Cabrillo has two separate beach areas.
Los Angeles City and Los Angeles County Lifeguards are responsible for the beach and ocean safety in and around the Cabrillo Beach area.
Cabrillo Beach is next to the Los Angeles Harbor and is only a short boat ride away from Catalina Island.
Cabrillo Beach is a popular destination for those interested in water sports, such as windsurfing, kayaking and SCUBA diving.
Cabrillo Beach is known by windsurfers as "Hurricane Gulch" because of its predictably strong winds.
It is also home to a few famous landmarks, namely the 1.75 mile Los Angeles Breakwater which ends at the Angeles Gate Lighthouse, the recently restored Cabrillo Beach Bathhouse, and the Cabrillo Marine Aquarium. The Angels Gate Lighthouse is home to the annual Angel's Gate Lighthouse Swim competition, held by Lifeguards and San Pedro residents each summer.
Chulalongkorn University
Chulalongkorn University () is the oldest university in Thailand. It has been ranked as the number 1 university in Thailand. It is in Bangkok (the capital city of Thailand). It was founded in 1917. Currently, there are about 30,000 students. The name of the university comes from the name of one of the kings of Thailand, (Rama V).
QS World University Ranking by Subject 2017
27 subjects that CU tops in the country's list includes:
Arts & Humanities
Engineering & Technology
Life Sciences & Medicine
Natural Sciences
Social Sciences & Management
9 subjects that CU comes in second on the country's list includes:
3 subjects that CU ranks third in the country's list includes:
Other Rankings
International Programs offered at Chulalongkorn University
for more details see Graduate School, Chulalongkorn University.
Normally, this university spends 4 years for studying the same as other universities but Faculty of Education, and Faculty of Architecture spends 5 years for studying. While Faculty of Veterinary Science, Faculty of Medicine, Faculty of Pharmaceutical Sciences and Faculty of Dentistry spends 6 years.
Khartoum
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Khartoum on map of Sudan
Khartoum is the capital of Sudan. This big city has over three million people. It is where the Blue Nile and main Nile come together. Its name means "elephant tusk". Two other big cities nearby are Omdurman and Khartoum North.
The Richest person in this city is Mir Fahad Ali, basically he is from India ( Hyderabad ) and this second wife is from Khartoum / first wife is from India ( Hyderabad)
Konkani language
Konkani is a language from India. Konkani belongs to Indo-Aryan family of languages. It is the official language of Goa, a state in India.
Some people from the part of India known as Konkan speak Konkani language. Konkan is on the west coast of India.
The name "Konkani" means "from the Konkan". The word "Konkan" means corner (kona) and piece/part of earth (kana). The name of the language comes from the place where it is spoken.
People write Konkani in many different scripts (writing systems or alphabets). People from different regions use different scripts. Hindu Konkani people from Goa and Maharashtra use Devanagari script. Konkani people from Karnataka use Kannada script. Christains in Goa use Roman script. Konkani Muslims use Arabic script. Konkani people from Kerala use Malayalam script. Devanagari is the official script.
Trench
A trench is a long, narrow ditch.
Trench warfare has often been used in defense. Entrenched soldiers can be somewhat safe from enemy fire. Trench warfare made World War I longer than expected. The trench coat got its name from there.
Several kinds of trench exist:
Trench coat
A trench coat (or trenchcoat) is a type of outdoor clothing. Trenchcoats are long coats made from stiff material, like heavy-duty cotton. They were invented for soldiers to wear in The First World War to keep them warm. Most trench coats also protect the wearer against rain.
In the 1950s, trench coats became a popular fashion item. In the 1980s and 1990s, trench coats were worn by punk rock musicians and gothic rock musicians. There have been many remodels of it.
A trumpet is a brass instrument used mainly in Classical music and jazz music. The most common type of trumpet is a B♭ trumpet, meaning that if the player plays a C, it will sound like a B♭ in concert pitch. The trumpet is played by blowing into the mouthpiece and making a "buzzing" sound. There are three keys called valves that the player can press to change the pitch.
The trumpet has been around for about 3000 years. An early example of a brass instrument like a trumpet is called a shofar, which is still used in religious ceremonies. Eventually people started making trumpet-like instruments with wood (for example, the cornetto), and later, with brass. Modern bugles are similar to early metal trumpets.
Many years ago, when the use of instrumental music was growing, trumpets became very important. Trumpets were long and without valves. This meant a player had to control the pitch of the sound with only his mouth, which was very difficult. Everyone respected trumpet players because trumpets were just so difficult to play.
The chromatic trumpet was developed in the late 18th century. In the 19th century, good valves made it easier to play notes on the trumpet. Still, trumpet is a difficult instrument to master.
Classical music is written for solo trumpet, and trumpets are included in orchestras. Trumpets play an important part in Jazz music, and other various popular genres. Sometimes, they also play short parts to emphasize sections in rock songs.
Some famous classical trumpet players are Adolph Herseth, Sergei Nakariakov and Maurice Andre.
Some famous jazz trumpet players are Miles Davis, Louis Armstrong, Arturo Sandoval, Wynton Marsalis, Dizzy Gillespie, and Maynard Ferguson.
A microwave is a high-frequency radio wave. They are broadly defined as having a wavelength between 1 millimeter and 1 meter, or narrowly between 3 mm and 300 mm. Microwaves have many uses including radar, radio astronomy, and to heat food in a microwave oven. Unlike longer radio waves, they do not bend around land obstacles but go in line of sight. Still, they are much used for communication because they can have a high bandwidth. Almost all spacecraft communicate by microwave radio.
When something moves, it almost always has a wave pattern to its movement - this can be seen in water most easily, in ripples and ocean waves. A very common type of wave in the universe is electromagnetic waves. Light is an example of an electromagnetic wave, and so is a microwave, for example the cosmic microwave background radiation. We can only see electromagnetic radiation in the visible light spectrum (which is why it's called the visible light spectrum), so microwaves are invisible.
Microwaves were among the first radio waves discovered, in the late 19th century, by Heinrich Rudolf Hertz.
Microwave ovens work because microwaves make polar molecules (molecules that act like tiny magnets) all face the same direction - to visualize it, imagine that the microwave oven is telling all of the molecules to face left, then right. Heat is just the movement of molecules, so when the molecules do a great amount of moving, they are hot.
Like other heat sources, microwave radiation can cause burns. They can go through skin and muscles. If vital organs are burned, the burns can kill. This is why a microwave oven does not work with the door open.
Microwave oven
A microwave oven (commonly called a microwave) is a machine that cooks food using microwaves, a type of radio wave. The idea was invented when a scientist who was experimenting with radio waves saw his chocolate bar, which was in his pocket, had melted. He then knew that radio waves could cook food and invented the microwave oven.
The microwave oven uses a magnetron. This is similar to a radio transmitter. It makes very short radio waves which go into the food to a depth of about 2.5cm (one inch). This makes water molecules twist about 2.5 billion times a second. This heats up the molecules around it. As they heat up the heat goes to the inside of the food. This process is called conduction. This also happens in a normal oven, but microwave energy goes deeper so that the food cooks much faster. In an ordinary oven the energy stays mostly near the surface, so it takes more time.
Apart from this, the oven has a wave guide, turntable, and a timer switch. When we place the food inside the chamber and turn the timer switch on, it sends a command to the magnetron to send microwaves, as well as to the turn table to start turning. The microwaves of microwave ovens can heat foods containing polar molecules, such as water, as polar molecules are prone to the vibration effect caused by the microwaves. To heat the food evenly the microwave's turntable spins the food around.
Metals tend to spark in microwaves, rather than heating. The reason why is that metals like to give away electrons, so when the microwaves "push" at their magnet-like electrons, instead of turning, they just give the electrons away. A bunch of electrons running off of metal is called electricity, and we see it in the form of sparks.
Cobalt (chemical symbol Co) is a chemical element. It has an atomic number of 27 and an atomic mass of about 59. It is a metal.
Cobalt is a transition metal. It is shiny and conducts electricity. It is magnetic. It is a hard metal. It is moderately reactive. Iron is more reactive and copper is less reactive. It dissolves slowly in acids. This reaction makes hydrogen and a salt of cobalt. Cobalt is normally in its +2 oxidation state as an ion. Some chemical compounds contain cobalt ions in its +4 oxidation state. Cobalt(II) chloride is one of the most common cobalt compounds. Many cobalt compounds are blue or pink. One of them is black.
Cobalt comes in two oxidation states, +2 and +3. Most soluble cobalt compounds are red. They can also be green, blue, brown, and black.
Cobalt is too reactive to occur as a pure element in the earth. It is found in certain minerals. It is found with copper and nickel deposits. Normally the three metals are bonded to arsenic and sulfur. The majority of cobalt mining is in central Africa.
It is found as a byproduct (left over substance) when copper and nickel are produced. It is made by reaction with the sludge from copper and nickel processing.
Cobalt is used in some types of steel. It hardens the steel. It is also used to make very strong tough alloys. These alloys are known as superalloys. Some cobalt compounds are used in the lithium-ion battery. Cobalt compounds were used as an artificial food coloring until 1971. It was discovered that it has harmful effects. It is used to make glass blue. It is also used as a catalyst. It is also used in some medicines.
The human body needs small amounts of cobalt for certain vitamins. Cobalt compounds are used to stop cyanide from poisoning the body.
People need cobalt compounds in small amounts, but cobalt is toxic in large quantities. Sometimes cobalt compounds were added to beer, and people that drank it were poisoned. It can cause skin irritation when touched.
Canidae
Canidae is a family of carnivorous and omnivorous mammals of the order Carnivora. Animals that belong to the family Canidae are called canids. The family Canidae is divided into two tribes: Vulpini ("true foxes"), and Canini ("true dogs").
Canids of the tribe Vulpini (foxes) are called "vulpines". Canids of the tribe Canini (wolves, dogs, coyotes and others) are called "canines". Some people call all these canids "canines", but this is wrong.
Examples of canids are dogs, wolves, foxes, coyotes, and jackals.
Nickel (chemical symbol Ni) is an element. It has an atomic number of 28 and an atomic mass of about 58.69amu. It has 28 protons. It is a transition metal.
Nickel is a silver-white metal. It is easily polished (made shiny). It is magnetic. It is not magnetic when heated above . It is not soft like many other metals. It can be stretched into wires easily. It is not radioactive.
Nickel is not a reactive metal. It dissolves slowly in acids. It does not rust like iron. It makes a thin coating of nickel(II) oxide which stops more corrosion. Aluminium does a similar thing.
Nickel is found in two oxidation states: +2, nickel(II); and +3, nickel(III). Nickel(II) is more common. Nickel in its +2 oxidation state is green. Nickel(II) chloride is a common +2 oxidation state compound. Nickel(II) oxide is normally dark green, but sometimes it is gray. This is because some of the nickel is in the +3 oxidation state (nickel(III). Nickel(III) compounds are oxidizing agents. They also are grayish. Nickel compounds can be green, blue, gray, or black.
Nickel(II) compounds are not highly reactive. They are normally green or blue. They are toxic and irritate skin. Some of them are carcinogens.
Nickel(III) compounds are black or gray.
The isotopes of nickel range in atomic weight from Ni to Ni. Nickel that is found in nature is made up of five stable isotopes; Ni, Ni, Ni, Ni and Ni.
At least 26 radioisotopes of nickel have been found. The most stable radioisotope is Ni which has a half-life of 76,000 years. Nickel also has one meta state.
Nickel was found when an ore that looked like copper did not make copper metal. Later it was found that the ore actually had a new metal, called nickel. Nickel was isolated as a metal and classified as a chemical element by Axel Fredrik Cronstedt in 1751. At first, the copper colored nickel ore was the only source. Later, it was made as a byproduct of cobalt blue making.