Strontium-90 is a radioactive isotope of strontium. It has a half life of roughly 29 years. Strontium-90 and strontium-89 have medical applications. They are used for radiation therapy, in the treatment of certain bone cancers. Because its application generates a lot of heat it is sometimes used instead of Plutonium in nuclear power plants.
Tin(II) oxide
Tin(II) oxide, also known as stannous oxide, is a chemical compound. Its chemical formula is SnO. It has tin in an oxidation state of +2. It also has oxide ions in it.
It is normally a blue-black solid. It can be red but the red form is more unstable. It burns in air with a green flame to make tin(IV) oxide. It is a reducing agent. It is rarer than tin(IV) oxide. It dissolves in acids to make a colorless solution.
It can be made by reacting sulfuric acid with tin and reacting the tin(II) sulfate made with sodium hydroxide to make the tin(II) oxide hydrate. This is heated to get the tin(II) oxide.
It is used in touchscreens. It is used to make a glass with gold in it called ruby glass.
Tin oxide
Tin oxide may refer to either of the following compounds:
Chemical stability
Chemical stability refers to the resistance of a chemical to change in a chemical reaction. Some chemicals, like gold, are very stable and resistant to change; but sodium is unstable and corrodes rapidly in the presence of air. When an atom has an extra electron or a missing electron, it is unstable. When that atom loses or gains the electron, it becomes stable. Stable atoms have lower energy than unstable ones.
Pisces (astrology)
The symbol represents 2 fish, swimming in different directions. The two shapes are also crescents, facing outward, which represents the idea that Pisceans are open to new things and to change.
Pisces has been traditionally ruled by the planet Jupiter, but since its discovery, Neptune has been considered a modern ruler of this sign. Being the twelfth sign, Pisces is associated with the astrological twelfth house.
Individuals born when the Sun was in this sign are considered ""Pisceans"". The Sun can be seen 1n Pisces from about February 19 to March 20, ending at the moment of vernal equinox by definition under the tropical zodiac.
Under the "sidereal zodiac", it is generally there from about March 15 to April 13.
James Wilson
James Wilson (September 14, 1742 – August 21, 1798) was one of the Founding Fathers of the United States. He was a signer of the United States Declaration of Independence. Wilson was elected two times to the Continental Congress, and was a major force in drafting the United States Constitution. He was a leading legal thinker, and he was one of the first six justices appointed by George Washington to the Supreme Court of the United States. Wilson was born in Scotland, but lived most of his life in Pennsylvania.
James Wilson was born in Carskerdo, near St. Andrews, Scotland. His parents were William Wilson and Alison Landall. Wilson attended a number of universities in Scotland without attaining a degree. Imbued with the ideas of the Scottish Enlightenment, he moved to Philadelphia, Pennsylvania, in British America in 1766, carrying valuable letters of introduction. These helped Wilson to begin tutoring and then teaching at The Academy and College of Philadelphia (now the University of Pennsylvania). He petitioned there for a degree and was awarded an honorary Master of Arts several months later.
Wilson started reading the law at the office of John Dickinson a short time later. After two years of studying, he got the bar in Philadelphia, and, in the following year (1767), set up his own practice in Reading, Pennsylvania. His office was very successful and he earned a small fortune in a few years. By then he had a small farm near Carlisle, Pennsylvania, was handling cases in eight local counties, and was lecturing at The Academy and College of Philadelphia.
On 5 November 1771, he married Rachel Bird, daughter of William Bird and Bridgette Hulings, they had six children together.
In 1774, Wilson wrote a pamphlet saying that the British Parliament had no power in America. He was for the Declaration of Independence when he was in the Continental Congress. During the American Revolution, he served in the Pennsylvania State Militia. He was also attacked at his house by a mob. This was called the Fort Wilson riot. Wilson also continued to practice law, and was France's lawyer in the U.S.
Wilson was one of the main political economists at the Constitutional Convention. He gave more speeches than anyone but Gouverneur Morris. He also proposed the three-fifths compromise, and sat on the Committee of Detail.
Wilson served on the United States Supreme Court from 1789 to 1798. He was the first associate justice nominated by George Washington.
Ultratop 40 Singles
Ultratop 40 Singles, often called Ultratop 40, is the weekly chart of best-selling singles in Wallonia, Belgium. Its equivalent covering the Flanders region is Ultratop 50. Both charts are made and published by the Ultratop organization. Like the UK Singles Chart, Ultratop creates charts based on retail record sales of around 500 retail outlets and legal digital downloads. Currently GfK is the market observer of the charts. The chart broadcasts on Radio Contact on Saturdays from 12:00 to 14:00. The combined number of Ultratop chart listeners on radio or TV stations exceeds two million each week. To celebrate the 10th anniversary of the charts in 2005 a jubilee book was published. It covered all the 15,282 singles from 5,882 artists thus far.
Ultratop 50 Singles
Ultratop 50 Singles, often called Ultratop 50, is the weekly chart of fifty best-selling singles in Flanders, Belgium. Ultratop 50 and is produced and published by the Ultratop organization. The chart has existed since March 31, 1995. It is published in Dutch, French, and English, and is presented on several Belgian radio stations as well as on TMF Flanders television.
Its equivalent in the Wallonia region of Belgium is known as the "Ultratop 40 Singles" chart.
Three other charts from the Ultratop organization bear similar names: two separate and usually different charts named "Ultratop 50 Albums" tracking weekly album performance in the Dutch-speaking Flanders and French-speaking Wallonia regions, respectively; and one chart named "Ultratop 50 Alternative Albums". All of these charts, too, are published in three languages.
Valencia Street Circuit
The Valencia Street Circuit is a semi-permanent street circuit in Valencia Spain. The circuit will host the Formula One European Grand Prix for seven years starting in The first Formula One race on the circuit was held on 24 August 2008, with Felipe Massa winning the event, the European Grand Prix. The circuit uses the roads around the city's harbour and America's Cup port area. One section of the circuit uses a 140 metre long swing bridge.
It also includes some roads designed to be used only for racing purposes by the German architect Hermann Tilke. Tilke also designed the buildings used for the circuit.
The deal to host the Valencia race was signed on 1 June 2007. It will last for seven years. The deal was made with the Valmor Sport group. The official track layout was unveiled by Valencia councillor and transport minister, Mario Flores, on 19 July 2007. The track was first used in the last weekend of July 2008. The circuit hosted a round of the Spanish F3 Championship and International GT Open. It was first used for the European Grand Prix on 24 August 2008.
The track is long and incorporates a total of 25 turns. There are 11 right-hand turns and 14 left-hand turns. It is estimated that the track has a top speed of around . Valencia is not as tight as Circuit de Monaco. There are not very many places to pass. The straights not not very straight the track gets very dusty off line.