AcharyaChanakya/simple-wikipedia huggingface dataset:
The famous architectural historian, Sir Banister Fletcher, said that no other city in the world had given such a wonderful view to people visiting their main church. He said that no other architect except Bernini could have imagined such a noble design. He said it is the greatest entrance to the greatest Christian church in the whole world.
St. Peter's Basilica has many treasures. These include Christian relics, the tombs of popes and many other important people, famous artworks which are mostly sculpture and other interesting things.
Alcúdia
Computer memory
Computer memory is a temporary storage area. It holds the data and instructions that the Central Processing Unit (CPU) needs. Before a program can run, the program is loaded from storage into the memory. This allows the CPU direct access to the computer program. Memory is needed in all computers.
A computer is usually a binary digital electronics device. Binary means it has only two states. On or Off. Zero or One. In a binary digital computer transistors are used to switch the electricity on and off. The computer's memory is made from lots of transistors.
Each on/off setting in the computer's memory is called a binary digit or bit. A group of eight bits is called a byte. A byte is made from two nibbles of four bits each. Computer scientists made up the words "bit" and "byte". The word "bit" is short for "binary digit". It takes "bi" from binary and adds the "t" from digit. A collection of bits was called a bite. The computer scientists changed the spelling to "byte" to avoid confusion. When the computer scientists needed a word for half a byte, they thought "nibble", as in "half a bite", would be a fun word to choose.
A byte of memory is used to store a code to represent a character such as a number, a letter or a symbol. Eight bits can store 256 different codes. This was thought enough and a byte became fixed at eight bits.
This allows the ten decimal digits, 26 lower-case letters, 26 upper-case letters and many symbols.
Early computers used six bits to a byte. This gave them 64 different codes. These computers did not have lower-case letters.
Computer scientists had to agree on which code would represent each character. Most modern computers use ASCII, the "American Standard Code for Information Interchange". In ASCII each code is eight bits – any combination of 0s and 1s – and form one character. The letter A is denoted by the code 01000001.
To allow for all the different characters in all the worlds languages, modern computers need more than 256 different characters. Another code system called Unicode allows for 1,112,064 different characters by using from one to four bytes for each character.
The computer's CPU can access each individual byte. It uses an address for each byte. Computer memory addresses start at zero and go up to the biggest number the computer can use. Older computers were limited in how much memory they could address. 32-bit computers can address up to 4GB of memory. Modern computers use 64 bits and could address up to 18,446,744,073,709,551,616 bytes = 16 exabytes of memory.
The numbers that computers use can get very large. To make it easier, the unit K (for kilobyte) or Ki (for kibibyte) can be used. In computer memory numbers are powers of two. One Kibibyte is two to the power of 10, that is 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 and written as 2 = 1024 bytes. For example, 64 Kibibytes, written as 64KiB or 64KB, of memory is the same as 65,536 bytes (1,024 × 64 = 65,536). For larger memory capacities, the units "megabyte" (MB) or "mebibyte" (MiB) and "gigabyte" (GB) or "gibibyte" (GiB) are used. One megabyte of computer memory means 2 bytes or 1024KB, which is 1,048,576 bytes. One gibibyte means 2 bytes or 1024MB.
The numbers are multiples of two. This is why a kilobyte of memory is 1024 bytes and not 1000 as would be the case for kilogram. To try to avoid this confusion the International Electrotechnical Commission (IEC) use the names kibibyte, mebibyte, and gibibyte for binary powers. They use kilobyte, megabyte, and gigabyte to mean powers of 10. The Joint Electron Device Engineering Council (JEDEC) have kept the older names. To make it worse the sizes of computer storage, such as hard disk drives (HDD), are measured in powers of ten. So a 500GB disk drive is 500 x 1000 x 1000 x 1000 bytes. This is a lot less that 500GB of memory which is 500 x 1024 x 1024 x1024. Most computer scientists still use the old names and have to remember that the units are different when talking about memory and storage devices.
There are some programs and instructions which the computer will always need. Read only memory (ROM) is the permanent memory which is used to store these important control programs and systems software to perform functions such as booting up or starting up programs. ROM is non-volatile. That means the contents are not lost when the power is switched off. Its contents are written when the computer is built, but in modern computers, the user can change the contents using special software.
Random access memory (RAM) is used as the working memory of a computer system. It stores input data, intermediate results, programs, and other information temporarily. It can be read and/or written. It is usually volatile, which means that all data will be lost when the power is turned off. In most cases it is loaded again from the hard disk which is used as data storage.
Non-volatile memory is computer memory that keeps the stored information when not powered.
Examples of non-volatile memory include:
It can sometimes refer to computer storage. These are always non-volatile.
Examples inlcude:
Setebos (moon)
Setebos is one of the farthest retrograde non-spherical moons of Uranus. It was found on 1999-07-18 by John J. Kavelaars "et al." and designated S/1999 U 1.
Confirmed as Uranus XIX it is named after the god worshipped by Caliban and Sycorax in William Shakespeare's play "The Tempest".
The orbital parameters suggest that it may belong, together with Sycorax and Prospero to the same dynamic cluster, suggesting common origin. However, this suggestion does not appear to be supported by the observed colours. The moon appears grey in the visible light, similar to Prospero but different from Sycorax (which is "light red").
Hydroelectricity and dams in the Dominican Republic
There are many hydroelectric plants in the Dominican Republic, which is composed of rivers, lakes, streams, and several waterfalls.
"Note:"
Vieques, Puerto Rico
Vieques (English pronunciation: "vee-AY-kayz" or "-kez"), in full Isla de Vieques, is an island-municipality of Puerto Rico in the northeastern Caribbean. Like mainland Puerto Rico the island is US territory, though it retains strong Spanish influences from 400 years of Spanish ownership.
Fajardo, Puerto Rico
Hurricane Noel
Hurricane Noel was the fourteenth named storm and sixth hurricane of the 2007 Atlantic hurricane season. Noel formed on October 27 from the interaction between a tropical wave and an upper-level low in the north-central Caribbean Sea. It strengthened to winds of 60 mph (95 km/h) before making landfall on western Haiti and the north coast of eastern Cuba. It turned northward, and on November 1 it attained hurricane status. The hurricane accelerated northeastward after crossing the Bahamas, and on November 2 it became an extratropical cyclone. (The Canadian Hurricane Centre classified Noel as a post-tropical storm until 2200 UTC November 4 when it determined that it had lost all tropical characteristics.)
The storm caused at least 169 deaths along its path, primarily in Hispaniola, due to flooding and mudslides. It was the deadliest Atlantic hurricane of the 2007 season. After its transition to post-tropical, Noel became a very strong low pressure system causing flooding and wind damage over Maine and Eastern Canada. It even dropped snow over some areas of Eastern Quebec and Labrador.
The name Noel was retired in May 2008 and replaced by Nestor for the 2013 Atlantic hurricane season.
Storm history of Hurricane Wilma
The meteorological history of Hurricane Wilma, the strongest tropical cyclone known in the Western Hemisphere, began in the second week of October 2005. A big weather system formed across much of the Caribbean Sea and slowly organized to the southeast of Jamaica. By late on October 15, the system was became strong for the National Hurricane Center to name it Tropical Depression Twenty-Four.
The depression slowly moved southwestward, and in conditions that were good for strengthening, it strengthened into Tropical Storm "Wilma" on October 17. In the beginning, development was slow because of its large size, although thunderstorms slowly organized. From October 18, and over the next day, Wilma underwent explosive deepening over the open waters of the Caribbean; in a 30-hour period, the system's central atmospheric pressure dropped from 982 mbar (29.00 inHg) to the record-low value of 882 mbar (26.05 inHg), while the winds increased to 185 mph (300 km/h). At its strongest, the pinhole eye of Wilma was about 3 miles (5 km) in diameter, the smallest known eye in an Atlantic hurricane. After the inner eye died off because of an eyewall replacement cycle, Wilma weakened to Category 4 status, and on October 21, it made landfall on Cozumel and on the Mexican mainland with winds of about 150 mph (240 km/h).
The origin of Hurricane Wilma is complicated. During the second week of October, an unusually large, monsoon-like lower-level circulation and a large area of disturbed weather developed over much of the Caribbean Sea. The system was enhanced by diffluence—the rate at which a fluid moves—from an upper-level low across the southwestern Atlantic. By October 13, a broad area of low pressure developed and persisted about 150 miles (240 km) southeast of Jamaica, possibly aided by the passage of tropical waves through the area at the time. Convection increased and became slightly better organized, though upper-level wind shear originally stopped development. The system moved westward, and early on October 14 the convection became more concentrated and a little better organized as upper-level wind shear lessened slightly.
Later on October 14, the system became much better organized, with increasingly organized shower and thunderstorm activity, as conditions in the upper levels of the atmosphere became significantly more favorable. It was then that the National Hurricane Center first said that it was possible for a tropical depression to develop in the area. Dvorak classifications were initiated on October 15. The system continued to organize, with the National Hurricane Center remarking the system could ultimately become a hurricane. By late on October 15, the surface circulation became defined well-enough, with enough organized deep convection, for the National Hurricane Center to designate the system as "Tropical Depression Twenty-Four" while it was about 220 miles (345 km) east-southeast of Grand Cayman.
The depression tracked slowly westward, a motion due to weak steering currents caused by a high pressure system to its north across the Gulf of Mexico. Initially, the center of circulation was broad without a defined inner core; forecaster Lixion Avila remarked, "The area of minimum pressure could [have been] anywhere within 60 miles (95 km) of its [initial advisory position]." Originally, the tropical depression was forecast to drift west-southwestward before turning to the north; within 120 hours of the forecast's issuance, the system was predicted to be about 80 miles (130 km) south of the Isle of Youth as a 105 mph (170 km/h) hurricane. However, the National Hurricane Center noted in the first advisory on the depression that there were "all indications that there could a dangerous hurricane in the northwestern Caribbean Sea in 3 to 5 days." This was due to the depression being in an environment very ideal for development, specifically low amounts of wind shear and very warm water temperatures.
As Tropical Depression Twenty-Four drifted southwestward, it steadily organized; by early on October 16, rainbands began to slowly consolidate with well-established outflow, and a large upper-level anticyclone developed over the depression. Although deep convection and banding features increased, mid-level dry air from the north prevented significant organization, and the convection was split into two primary areas. Surface buoy reports indicated that, due to its large size, the system failed to strengthen beyond tropical depression status, even though it received tropical storm strength Dvorak classifications from The National Hurricane Center's Tropical Analysis and Forecast Branch and the National Oceanic and Atmospheric Administration's Satellite Analysis Branch. Continued reconnaissance flights reported peak winds of about 30 mph (50 km/h).
By early on October 17, the outer rainbands, which had previously controlled the structure of the cyclone, dissipated, while deep convection developed near and to the south of the center. Computer models predicted steady strengthening as the depression moved westward before turning to the north. Of the intensity models, the Geophysical Fluid Dynamics Laboratory predicted an intensity of 135 mph (215 km/h) within 36 hours, with other forecasts being more conservative in their predictions. Deep convection continued to develop to the south of the center, and the depression strengthened into Tropical Storm Wilma at 0600 UTC on October 17, while about 200 miles (320 km) southeast of Grand Cayman. Right after becoming a tropical storm, the National Hurricane Center predicted Wilma to track west-northwestward, reaching winds of 105 mph (170 km/h) before striking the northeastern portion of the Yucatán Peninsula. The storm continued to the southwest while deep convection laid near the center. National Hurricane Centner forecaster James Franklin said, "Confidence at the later ranges [of the forecast track] was unusually low", because of wide divergences between computer models. Late on October 17, a Hurricane Hunters flight into Wilma recorded winds of 50 mph (80 km/h), but an unusually low pressure of 989 mbar (29.21 inHg), which would be more typical of a minimal hurricane. This was because of a number of unusual low pressures across the region, which resulted in a lesser pressure gradient and thus lighter winds. Convection continued to develop near the center and became much more symmetrical.
Tropical Storm Wilma began to turn to the west-northwest on October 18, during which the storm developed a small, intermittent and ragged eye feature as well as a mid-level eye feature. It continued to strength, and at 1200 UTC on October 18, Wilma strengthened into a Category 1 hurricane while about 225 miles (360 km) south-southeast of Grand Cayman. Shortly after reaching hurricane strength, the hurricane began undergoing explosive deepening, subsequent to the development of a "pinhole" eye 9 miles (14 km) in diameter. This small eye was surrounded by a ring of deep convection, with cloud-top temperatures of about -125 °F (-87 °C).
Early on October 19, Wilma attained major hurricane status while continuing to rapidly intensify, and by 0600 UTC, the storm's maximum sustained winds increased to 170 mph (275 km/h), making Wilma a dangerous Category 5 hurricane on the Saffir-Simpson Hurricane Scale. In the span of just 24 hours, Wilma had intensified from a 70-mph (110-km/h) tropical storm to a 175-mph (280-km/h) Category 5 hurricane, an event that has never happened before for an Atlantic hurricane. The eye continued to contract to a diameter of about 3 miles (5 km), the smallest known eye in an Atlantic hurricane, and at 1200 UTC on October 19, Wilma reached peak winds of 185 mph (300 km/h). The central pressure quickly dropped 54 mbar (1.65 inHg) from 0000 to 0600 UTC.
At 0800 UTC, a Hurricane Hunters flight recorded a minimum central pressure of 884 mbar (26.10 inHg) in a dropsonde near the center of the extremely small eye. As the dropsonde did not reach the calm winds in the center, the pressure was estimated at 882 mbar (26.05 inHg), the lowest pressure in an Atlantic hurricane on record. The pressure continued to fall as the Hurricane Hunters left the hurricane, and it is possible the pressure was a little bit lower. Operationally, the peak intensity was estimated at 175 mph (280 km/h). At the time of its peak intensity, hurricane force winds extended only 50 miles (85 km) from the small center of Wilma, with tropical storm force winds extending only about 160 miles (260 km).
Shortly after peaking in intensity, the coldest cloud tops surrounding the eye warmed a little bit and an outer eyewall began to form, meaning that an eyewall replacement cycle was happening. By late on October 19, the winds in Hurricane Wilma decreased to 160 mph (260 km/h) as the inner 5 mile (8 km) wide eye weakened and the wind field expanded. Early on October 20 the hurricane weakened to Category 4 status after the small, inner eye dissipated and the 45 mile wide outer eyewall became the new eye. At the time, the pressure measured 892 mbar (26.34 inHg), the lowest known pressure for a Category 4 hurricane, and Wilma retained the large eyewall as it turned northwestward. Originally, the hurricane was forecasted to re-intensify into a Category 5 hurricane, with one forecast predicting it to make landfall on the Yucatán Peninsula with winds of 165 mph (265 km/h), though Wilma remained a strong Category 4 hurricane as it tracked northwestward.
Steering currents stayed weak, though a series of troughs eroded the high pressure system across the Gulf of Mexico, resulting in a turn towards the north-northwest. Environmental conditions remained favorable, with the eye becoming more distinct early on October 21. At about 2145 UTC on October 21, Wilma made landfall on the island of Cozumel with winds of 150 mph (240 km/h). It weakened a little bit as it continued northwestward, and struck the Mexican mainland near Puerto Morelos at 0330 UTC on October 22, with winds of 135 mph (215 km/h) and gusts of up to 170 mph (270 km/h).
On October 22, the mid-level ridge to the north of Wilma later dissipated, leaving the hurricane moving northward across the northeastern Yucatán Peninsula. As the hurricane moved farther inland, the eye became cloud-filled as the deepest convection began to warm, and the winds slowly weakened during its passage over land. About 26 hours after making landfall on Cozumel, Wilma emerged into the southern Gulf of Mexico near Cabo Catoche with winds of about 100 mph (160 km/h). After reaching open waters, Reconnaissance Aircraft reported the remains of an inner eyewall and an outer eyewall measuring between 70 and 90 miles (110 to 145 km) in diameter. Convection deepened around the eyewalls, and the inner core of convection, which had previously become disrupted over land, became a little bit more organized.
A powerful eastward-moving mid-level trough across the central United States turned the hurricane northeastward and caused it to gradually speed up. Vertical wind shear increased as strong upper-level southwesterly flow increased, though in spite of the shear Wilma continued to intensify. Early on October 24, Wilma re-gained major hurricane status while about 120 miles (195 km) west-southwest of Key West, Florida. It slowly became better organized, with the large 50 mile (80 km) eye becoming very distinct on satellite and radar imagery. Wilma was able to retain its strength because large eyes in tropical cyclones are more stable and more resistant to vertical wind shear. Despite wind shear values of about 30 mph (48 km/h), Wilma strengthened further to reach winds of 125 mph (200 km/h). It weakened a little bit as it approached Florida, and made landfall at Cape Romano with winds of 120 mph (195 km/h) at around 1030 UTC on October 24.
Hurricane Wilma crossed the Florida peninsula in about 4.5 hours while continuing to speed northeastward, and entered into the Atlantic Ocean as a weakened 110 mph (175 km/h) hurricane near Jupiter. A vigorous cold front associated with the mid-level trough moved across the area to the west of Wilma, yet the cooler and drier air behind the front could not fully penetrate the inner core of the hurricane to weaken it. Shortly after exiting the Florida coastline, Wilma began to re-intensify, believed to be due to a reduction of friction of the eyewall and warm waters of the Gulf Stream. Early on October 25, the hurricane reached a secondary peak intensity of 125 mph while about 340 miles (545 km) east of Jacksonville, Florida. During the time, the large circulation of Wilma absorbed smaller Tropical Depression Alpha over the Bahamas. Shortly thereafter, the wind shear combined with its rapid forward motion of 50 mph (80 km/h) resulted in a slow weakening trend. The overall cloud pattern began to be disorganized, with the eye becoming less visible and the convection less symmetric. By 1170 UTC on October 25, the center was to the northwest of the primary convection as cold air from the southwest disturbed the circulation. The remaining convection continued to diminish, and early on October 26 Wilma turned into an extratropical cyclone while about 230 miles (370 km) southeast of Halifax, Nova Scotia. The extratropical remnant continued east-northeast before being absorbed by another extratropical storm on October 27.
Top Chef
Wilma is a female given name. It is a short form of the German name Wilhelmina. The name means "protector". The male version of the name is Will, short for William.
People with this name include:
Cozumel (Mayan: "Island of the Swallows") is an island in the Caribbean Sea off the eastern coast of Mexico's Yucatán Peninsula, opposite Playa del Carmen. It is one of the eight municipalities "(municipios)" of the state of Quintana Roo. Cozumel is a popular tourist destination renowned for its scuba diving. The main town on the island is San Miguel de Cozumel.
The island is about 48 km (30 miles) north-south and 16 km (10 miles) east-west, and is the largest Atlantic island of Mexico. It is about 20 km (12 miles) from the mainland, and some 60 km (36 miles) south of Cancún. The vast majority of the population of Cozumel lives in the town of San Miguel (pop. 71,401 in 2005), which is on the western shore. The rest of the island is low, flat, and densely vegetated.
Cape Romano
Cape Romano is a cape at the southern end of Caxambas Island, just south of Marco Island and northwest of the Ten Thousand Islands in Collier County, Florida. Cape Romano was also the spot where Hurricane Wilma made its first U.S. landfall in October 2005.
Calusa Indians declared-ownership of the area and called it Manataca. Juan Ponce de León made a short stop at Manataca on his first visit from Puerto Rico to Florida, but the Indians tried to fight him off.
Cape Romano was the spot where Hurricane Wilma first reached land in the U.S. October 2005. Tropical Storm Fay also reached land here in 2008.
Jupiter is a town in Palm Beach County, Florida, USA. It is named after the Roman god Jupiter. The town is a suburb of Miami.
According to the United States census, there were 55,156 people living in Jupiter in 2010. Some famous people who were born in or lived in Jupiter are: Tori Amos, Celine Dion, and Burt Reynolds.
Atlantic Canada
Atlantic Canada, also known as the Atlantic provinces, is the region of Canada which is made up of four provinces on the Atlantic coast: the three Maritime provinces – New Brunswick, Nova Scotia, and Prince Edward Island – and Newfoundland and Labrador. The population of the Atlantic provinces was 2,324,893 in 2007.
A tomb is a place built to bury dead bodies, usually more elaborate and expensive than a grave. It is often intended to honor the dead, and be visited by the living. A tomb (from Greek "τύμβος" - tumbos) is generally any structurally enclosed space or chamber used for housing the remains of the dead, and sometimes their possessions. The word is used in a broad sense to encompass a number of such types of places of burial.
Tombs were used in the Ancient Egyptian period where the bodies or possessions of Pharaohs were stored or buried inside a pyramid after mummification, where the pharaohs’ bodies would have their organs removed, their bodies covered with salt and then wrapped in bandages and a portrait panel of the pharaoh placed over the face, or death mask.
Ferdinand (moon)
Ferdinand is the farthest retrograde non-spherical moon of Uranus. It was found by Matthew J. Holman, John J. Kavelaars, Dan Milisavljevic, and Brett J. Gladman on August 13, 2001 and given the designation S/2001 U 2.
Despite being seen again on September 21 and November 15 and even a year later on August 13 and September 5, 2002, it was eventually lost. It was finally refound on September 24, 2003 by Scott S. Sheppard on images taken by David C. Jewitt and himself on August 29-30 and September 20 of that year. Confirming observations were made by Holman on September 30.
Designated Uranus XXIV it was named after the son of the King of Naples in William Shakespeare's play "The Tempest".
Ferdinand is the farthest known moon of Uranus. It follows a retrograde, fairly inclined but very eccentric orbit.
Nix (moon)
Nix is a non-spherical moon of Pluto. It was found along with Hydra in June 2005 by the Hubble Space Telescope Pluto Companion Search Team.
The discovery images were taken on May 15, 2005 and May 18, 2005; the moons were independently found by Max J. Mutchler on June 15, 2005 and Andrew J. Steffl on August 15, 2005. The discoveries were announced on October 31, 2005, after confirmation from photographs archived in 2002. The moon were designated S/2005 P 1 (Hydra) and S/2005 P 2 (Nix).
The moon follows a circular orbit in the same plane as Charon. It takes 24.9 days to circle around Pluto.
Before its size was directly measured, the moon was calculated to have a diameter of between 46 km, if its reflectivity is similar to Charon's 35%, and 137 km, if it had a reflectivity of 4%, like the darkest Kuiper belt objects. Nix is slightly fainter than Hydra, suggesting that it is somewhat smaller in size. In the discovery image, Nix is 6,300 times fainter than Pluto.
Early research appeared to show that Nix was reddish like Pluto and unlike the other moons, but more recent reports have been that it is grey like the remaining moons.
Nix was visited along with Pluto by the "New Horizons" mission in 2015.
The formal name "Nix", from the Greek goddess of darkness and night, and mother of Charon, was announced on June 21, 2006 on IAU Circular 8723, where the designation Pluto II is also given. Together with Hydra, Pluto's third moon, the initials are those of the "New Horizons" probe. The initial proposal was to use the Classical spelling Nyx, but to avoid confusion with the asteroid 3908 Nyx, this was changed to "the Egyptian spelling of the Greek name".
Anticyclone
Dvorak technique
Grand Cayman is the largest of the three Cayman Islands at about 196 km² and contains the capital George Town. Towns on the island are referred to as "districts".
The island is a popular tourist spot because of its coral reefs. Snorkeling and scuba diving are popular activities.
Tägerwilen
Thundorf, Switzerland
Tobel-Tägerschen
Uesslingen-Buch
Hydra (moon)
Hydra is the farthest moon of Pluto. It was found along with Nix in June, 2005 by the Hubble Space Telescope's Pluto Companion Search Team, which is composed of Hal A. Weaver, Alan Stern, Max J. Mutchler, Andrew J. Steffl, Marc W. Buie, William J. Merline, John R. Spencer, Eliot F. Young, and Leslie A. Young. The discovery images were taken on May 15, 2005 and May 18, 2005; the moons were independently found by Max J. Mutchler on June 15, 2005 and Andrew J. Steffl on August 15, 2005. The discoveries were announced on October 31, 2005, after confirmation by precoveries from 2002. The moons were provisionally designated S/2005 P 1 (Hydra) and S/2005 P 2 (Nix).
The moon orbits the barycenter of the system in the same plane as Charon and Nix, at a distance of about 65,000 km. Unlike other moons of Pluto, its orbit is only nearly circular; its eccentricity of 0.0052 is small, but significantly non-zero. Its orbital period of 38.2 days.
Although its size has not been directly measured, calculations based on its brightness give it a diameter of between 61 km, if its reflectivity is similar to Charon's 35 percent, and about 167 km, if it has a reflectivity of 4 percent like the darkest Kuiper belt objects (KBOs). At the time of discovery, Hydra was about 25 percent brighter than its sister moon Nix, which led to the assumption that its diameter was some 10 percent bigger. Pre-discovery data from Hubble observations in 2002-3 inferred that Nix was the brighter moon. However, Hubble observations in 2005-6, specifically targeting the dim moons, once again showed Hydra to be a little brighter. Hydra appears to be grey like Charon and Nix, though Pluto is reddish.
Hydra was to be visited along with Pluto by the "New Horizons" mission in 2015.
The name "Hydra" was announced on June 21, 2006, in IAU Circular 8723, along with the formal designation Pluto III. It was named after Hydra, the monster who guarded the waters of Pluto/Hades's underworld in Greco-Roman mythology.
5 Astraea
5 Astraea (written Astræa in the early literature) is a big main belt asteroid. Its surface is very reflective (bright) and what it's made of is probably a mixture of nickel-iron with magnesium- and iron-silicates. The adjectival form of the name, although unused, would be "Astraean" (which also designates a genus of star corals).
Astraea was the fifth asteroid found, on December 8, 1845 by K. L. Hencke. It was his first of two asteroid discoveries. The second was 6 Hebe. An amateur astronomer and post office employee, Hencke was looking for 4 Vesta when he stumbled on Astraea. The King of Prussia awarded him with an annual pension of 300 US$ (1968 dollars) for the discovery.
Photometry indicates prograde rotation, that the north pole points in the direction of right ascension 9 h 52 min, declination 73° with a 5° uncertainty. This gives an axial tilt of about 33°.
Astrea is physically unremarkable but notable mainly because for 38 years (after the discovery of Vesta in 1807) it had been thought that there were only four asteroids. In terms of maximum brightness, it is indeed only the "seventeenth brightest" main belt asteroid, being fainter than 192 Nausikaa and even, at rare near-perihelion oppositions, the highly eccentric carbonaceous 324 Bamberga.
After the discovery of Astraea, thousands of other asteroids would follow. Indeed, the discovery of Astrea proved to be the starting point for the eventual demotion of the four original asteroids (which were regarded as planets at the time) to their current status, as it became apparent that these four were only the biggest of a whole new type of celestial body.
There has been only one seen stellar occultation by Astraea (February 2, 1991).
Fred and George Weasley
Fred and George Weasley are characters in J.K. Rowling's "Harry Potter" series. They are twins and brothers of Harry Potter's best friend Ron Weasley; younger than Bill, Charlie, and Percy, but older than Ginny and Ron. They're in the middle of the seven Weasley children. They have red hair and are proud to be Weasleys. In the movies, both twins are tall and skinny. In the books they are described as shorter and stockier than Ron.
Although these two are not very big characters in the seven-book installment, they play some big roles in a few books. In "Harry Potter and the Prisoner of Azkaban", the twins show Harry the Marauder's Map that they found that leads to many useful and helpful things. In "Harry Potter and the Order of the Phoenix" (their seventh year), the two escape Hogwarts and the new Defense Against The Dark Arts teacher, Professor Umbridge and left a fantastic fireworks show and a giant "W". The students found it amusing and use the phrase "rolling a Weasley" to describe disappointment at something and wanted to go away. Fred and George are also involved in Harry's big study group that is called D.A. (Dumbledore's Army). In the beginning of "Half-Blood Prince", Ron, Hermione, and Harry, followed by Ginny, Mrs. and Mr. Weasley, visit the twins in their new joke shop. They are excited to see them and show all their new joke shop supplies. In "Deathly Hallows", Fred Weasley gets killed outside the room of requirement by an explosion presumably by Augustus Rookwood, breaking the hearts of many Harry Potter fans. George gets his ear accidentally cut off by Severus Snape using Sectumsempra. George marries Angelina Johnson.
Fred and George are usually described as determined, mischievous, and very sneaky. They get scolded by their mother, Molly Weasley for many things that they do (for example, Apparating right in front of her eyes in "Order of the Phoenix".)
The actors who portrayed Fred and George are James and Oliver Phelps respectively. Oliver is actually the older twin, but Fred is older than George. Two differences between the Phelps twins is that Oliver has a mole on the right side of his neck, while James does not and James has a slightly deeper voice than Oliver.
Nanyang Technological University (NTU) is one of the two largest public universities in Singapore. It is a fast-rising, research-intensive university with the biggest campus in Singapore and the world’s largest engineering college. Its 200-hectare Yunnan Garden campus was the Youth Olympic Village for the first Youth Olympics in 2010.
NTU’s main Yunnan Garden campus is in the western part of Singapore. It has world-class resources for teaching and research. It also has 16 halls of residence and housing for faculty, staff and postgraduate students, as well as Olympic-training-standard sporting facilities. Announced in 2010, NTU’s Campus Master Plan will transform the grounds into a “univer-city” with a bustling campus centre, new residential halls and trendy spaces for learning, research and play. Besides the Yunnan Garden campus, NTU also has a satellite campus in Singapore’s science and technology hub, one-north. The university is also setting up a third campus in Novena, Singapore’s medical district.
NTU has 33,500 students in the Colleges of Engineering, Business, Science and Humanities, Arts, & Social Sciences. It also has many renowned researchers among its professors. In 2013, NTU will accept its first batch of medical undergraduates at its medical school with Imperial College London, the Lee Kong Chian School of Medicine.
College of Engineering
College of Science
College of Business
College of Humanities, Arts, & Social Sciences
Autonomous entities
Institutes and centres
NTU has more than 70 institutes and centres. Among them are:
NTU has programmes with institutions from around the world. Key partners include Caltech, Carnegie Mellon University, Cornell University, the Massachusetts Institute of Technology, Stanford University and the University of Washington in the United States; leading Asian institutions such as Peking University, the Indian Institute of Technology, Shanghai Jiao Tong University and Waseda University; and European institutions like Cambridge University, ETH Zurich, Imperial College London, Karolinska Institutet and Technische Universität München. NTU is also a partner of choice for leading companies and government agencies. Its major industrial partners include Infineon, Robert Bosch, Rolls-Royce, Thales, Siemens and Toray Industries.
In 2011, QS World University Rankings ranked NTU among the top 100 universities in the world. The university rose 16 places from its 2010 ranking to occupy the 58th position. This makes it one of the fastest-rising universities in the top 100 on the ranking, as well as the fastest-rising Asian university. On this ranking, NTU is the 12th leading Asian university globally. In 2011, NTU became the first university in Asia to receive the maximum five stars under the QS Stars rating system. Other universities with a 5-star rating include the Massachusetts Institute of Technology, Stanford University and the University of Cambridge.
NTU’s College of Engineering is the world’s largest, with research output among the top five globally. It is also the sixth most cited engineering college in the world. Its business school’s MBA is ranked among the top 35 globally. The S Rajaratnam School of International Studies is ranked first among university-related think-tanks in Asia and 13th globally.
Arts and media
ThaMuseMeant
ThaMuseMeant is an American folk rock band from Virginia.
Uttwil
8 Flora
8 Flora is a big, bright, main belt asteroid. It is the closest "big" asteroid: no asteroid closer to the Sun has a diameter above 25 kilometres or two-elevenths that of Flora itself, and not until the tiny 149 Medusa was found was a single asteroid orbiting at a closer mean distance known. It is the seventh brightest asteroid with a mean opposition magnitude of +8.7. Flora can reach a magnitude of +7.9 at a favorable opposition near perihelion, such as will occur in mid November 2007.
Flora was found by J. R. Hind on October 18, 1847. It was his second asteroid discovery after 7 Iris.
The name Flora was proposed by John Herschel, from Flora, the Latin goddess of flowers and gardens, wife of Zephyrus (the personnification of the West wind), mother of Spring, and whose Greek equivalent is Chloris (who has her own asteroid, 410 Chloris).
Flora is the parent body of the Flora family of asteroids, and by far the biggest member, having about 80% of the total mass of this family. But Flora was almost certainly disrupted by the impact(s) that formed the family, and is probably an aggregate of most of the pieces.
Flora's spectrum indicates that its surface is made of a mixture of silicate rock (including pyroxene and olivine) and nickel-iron metal. Flora, and the whole Flora family generally, are good candidates for being the parent bodies of the L chondrite meteorites. This meteorite type comprises about 38% of all meteorites impacting the Earth.
During an observation on March 25, 1917, 8 Flora was mistaken for the star TU Leonis, which led to that star's classification as a U Geminorum cataclysmic variable star. This mistake was uncovered only in 1995.
Central Nacional de Televisão
Central Nacional de Televisão or CNT is a television network in Curitiba, Brazil. It was created by Paraná state for all Brazil on March 15, 1979.
Dropsonde
Pressure gradient
Geophysical Fluid Dynamics Laboratory
Puerto Morelos
Puerto Morelos is a town in Quintana Roo, Mexico's easternmost state, on the Yucatán Peninsula.
There are two parts to Puerto Morelos. The original coastal fishing village is now a laid-back, mixed-use neighborhood of private homes, hotels, condominiums, restaurants, and tourist shops. The second part is about 2 km inland and adjacent to Highway 307, on the western side. The inland portion is mainly single level dwellings for the local workers.
Cabo Catoche
Cabo Catoche or Cape Catoche, in the Mexican state of Quintana Roo, is the northernmost point on the Yucatán Peninsula. It is about 53 km (33 miles) north of the city of Cancún.
Key West, Florida
Servicio Meteorológico Nacional
The Servicio Meteorologíco Nacional (SMN) is Mexico's national weather organization. It collects data and issues forecasts, advisories, and warnings for the entire country.
Storm history of Hurricane Ivan
The meteorological history of Hurricane Ivan, the longest tracked tropical cyclone of the 2004 Atlantic hurricane season, lasted from late August through late September. The hurricane developed from a tropical wave that moved off the coast of Africa on August 31. Moving westward from the effects of a ridge, favorable conditions allowed it to develop into Tropical Depression Nine on September 2 in the deep tropical Atlantic Ocean. The cyclone slowly intensified until September 5, when it underwent rapid deepening and reached Category 4 status on the Saffir-Simpson Hurricane Scale; at the time Ivan was the southernmost major hurricane on record.
Ivan quickly weakened because of dry air, but it slowly reorganized itself, passing just south of Grenada as a major hurricane on September 7. The hurricane strengthened into a Category 5 hurricane while in the central Caribbean Sea. Over next the days its intensity changed largely due to eyewall replacement cycles, and Ivan passed just south of Jamaica, the Cayman Islands, and western Cuba with winds at or slightly below Category 5 status. Turning northward and encountering unfavorable conditions, Ivan slowly weakened before making landfall just west of Gulf Shores, Alabama, on September 16 with winds of 120 mph (195 km/h). The cyclone quickly weakened to tropical depression status as it turned to the northeast, and Ivan transitioned into an extratropical cyclone on September 18.
The remnant low of Ivan turned to the south and southwest, and after crossing Florida on September 21 it began to regain tropical characteristics. It became a tropical depression again on September 22 to the southeast of Louisiana, and Ivan reached winds of 60 mph (95 km/h) before weakening and moving ashore along southwestern Louisiana as a tropical depression; the circulation of Ivan dissipated after crossing into Texas on September 25. The cyclone broke several intensity records, and its duration was the tenth longest on record for an Atlantic hurricane.
On August 31, a large tropical wave moved off the west coast of Africa. A tropical system along the wave axis contained a low pressure area as well as an impressive outflow pattern, though originally its convection was disorganized and limited. By September 1 a cyclonic circulation with a diameter of 690 mile (1115 km) was seen on satellite imagery, well to the southeast of the Cape Verde Islands, and several hurricane forecast models expected development and strengthening. As it moved quickly westward, the convection organized and developed into rainbands–bands of showers and thunderstorms that move in a spiral direction towards the center of the storm–and late on September 1 meteorologists began tracking the system using the Dvorak technique. Low amounts of wind shear and favorable outflow allowed strong deep convection to develop and persist near the center, and by 1800 UTC on September 2 the system developed into Tropical Depression Nine about 450 miles (730 km) southwest of Praia, Cape Verde.
After being classified as a tropical cyclone, the depression was embedded within a deep easterly steering current provided by a ridge to its north. Expected to move across sea surface temperatures greater than 82 °F (28 °C), the cyclone was forecasted to slowly strengthen and within four days become a hurricane; the Geophysical Fluid Dynamics Laboratory predicted the depression to reach Category 4 status on the Saffir-Simpson Hurricane Scale within three days. Increased northeasterly wind shear shifted the center to the northeastern edge of the deep convection, and despite the shear and its relatively low latitude of 9.7° N, the depression strengthened to attain tropical storm status early on September 3; upon reaching the intensity, the National Hurricane Center classified the system as Tropical Storm "Ivan".
Tropical Storm Ivan slowly became more organized as wind shear decreased, and its outflow expanded in all quadrants. Satellite imagery late on September 3 showed a well-defined curved band wrapping around much of the circulation. The next day, the deep convection temporarily became disorganzied, before reorganizing and developing an eye feature. Convection strengthened further as the feature transitioned into an eye, and Ivan became a hurricane at around 0600 UTC on September 5. After reaching hurricane status, Ivan began to rapidly intensify with continued favorable conditions, and in an 18 hour period the pressure dropped 39 mbar (1.15 inHg) as the winds increased by 60 mph (95 km/h); early on September 6 Ivan reached its first peak intensity of 135 mph (215 km/h) while about 825 miles (1330 km) east of the island of Tobago in the southern Lesser Antilles.
While at major hurricane status, Ivan kept very strong convection in its core with a well-defined eye. Operationally, the probability for further rapid strengthening was considered nearly nine times the average of a normal hurricane. Accordingly, Ivan was forecasted to pass near Barbados with winds of about 150 mph (240 km/h). Shortly after becoming a Category 4 hurricane, the outer convection of the hurricane became ragged. Hurricane Hunters found a Saharan Air Layer in the northern portion of the eye, leaving the eyewall eroded which caused a marked decrease in winds; by late on September 6 Ivan weakened to winds of 105 mph (165 km/h). The inner eyewall died out as a 23 mile (37 km) outer eyewall became took over, and at the same time, the overall organization of the hurricane improved. Ivan then re-gained major hurricane status as it approached the Lesser Antilles, and at 2130 UTC on September 7 the cyclone passed 7 miles (11 km) south-southwest of the southern tip of Grenada, its closest approach to the island. At the time, the hurricane maintained an eye diameter of 12 miles (19 km), with the northern portion of the eyewall producing strong winds on the island.
Hurricane Ivan again reached Category 4 status as it entered the Caribbean Sea. Subsequently, it underwent another eyewall replacement cycle, and for about 18 hours the intensity stayed the same as it paralleled the northern coast of Venezuela offshore. Another period of rapid deepening began late on September 8 as its motion turned to the west-northwest. Hurricane Hunters recorded flight-level sustained winds of 180 mph (290 km/h) to the north and northeast of the eye, and a dropsonde about 630 feet (190 m) above the surface recorded winds of 200 mph (325 km/h) and an extrapolated pressure of 916 mbar (27.05 inHg). Based on the reports, it is estimated Ivan attained Category 5 status at 0600 UTC on September 9, while about 90 miles (145 km) north of Aruba. At the time, the cyclone was forecasted to strike southern Florida as a major hurricane.
After maintaining Category 5 status for about 12 hours, Ivan began a steady weakening trend because of another eyewall replacement cycle until reaching winds of 140 mph (225 km/h) on September 10. Early next day, the hurricane reorganized as it reached winds just al little bit below of Category 5 status. However, the storm weakened again beause of another eyewall replacement cycle, and at 0330 UTC on September 11 Ivan passed 23 miles (37 km) south of Portland Point, Jamaica, its closest approach, with winds of 150 mph (240 km/h). The hurricane was previously forecasted to make landfall on the island, though the weakening and a turn to the west kept the strongest winds offshore; the last-minute turn to the west was due to a mid-level high pressure system over the eastern Gulf of Mexico. A slight weakening trend continued, due to its northern outflow being disrupted by an upper-level low over the Bahamas. As it tracked further away from Jamaica, Ivan again rapidly intensified to Category 5 status, and early on September 12 it reached its peak intensity of 165 mph (265 km/h) with a pressure of 910 mbar (26.87 inHg).
Shortly after peaking in intensity, the hurricane again weakened as it underwent an eyewall replacement cycle. At 1415 UTC on September 12 Ivan passed 25 miles (40 km) south-southwest of George Town, Cayman Islands, with winds of 150 mph (240 km/h). After its eyewall became re-established Ivan attained Category 5 status for a third time early on September 13. Shortly thereafter, a trough created a weakness in the ridge to its north, causing the hurricane to turn to the northwest. The combination of the combination of enhanced outflow from the trough and very warm waters allowed Ivan to maintain Category 5 status for 30 hours. Early on September 14 the hurricane passed through the Yucatán Channel about 17 miles (28 km) southwest of Cabo San Antonio, Cuba, with the eastern portion of the eyewall crossing the western portion of the island.