Please answer the following question: Information: - The Netherlands is the main constituent country of the Kingdom of the Netherlands. It is a densely populated country located in Western Europe with three island territories in the Caribbean. The European part of the Netherlands borders Germany to the east, Belgium to the south, and the North Sea to the northwest, sharing maritime borders with Belgium, the United Kingdom, and Germany. The largest cities in the Netherlands are Amsterdam, Rotterdam, The Hague and Utrecht. Amsterdam is the country's capital, while The Hague holds the Dutch seat of government and parliament. The name "Holland" is used to refer informally to the whole of the country of the Netherlands. - Rudolph Snel van Royen (5 October 1546 2 March 1613), Latinized as Rudolph Snellius, was a Dutch linguist and mathematician who held appointments at the University of Marburg and the University of Leiden. Snellius was an influence on some of the leading political and intellectual forces of the Dutch Golden Age. - Amsterdam is the capital and most populous municipality of the Kingdom of the Netherlands. Its status as the capital is mandated by the Constitution of the Netherlands, although it is not the seat of the government, which is The Hague. Amsterdam has a population of 847,176 within the city proper, 1,343,647 in the urban area, and 2,431,000 in the Amsterdam metropolitan area. The city is located in the province of North Holland in the west of the country. The metropolitan area comprises much of the northern part of the Randstad, one of the larger conurbations in Europe, with a population of approximately 7million. - Leiden Observatory (Sterrewacht Leiden in Dutch) is an astronomical observatory in the city of Leiden, the Netherlands. It was established by Leiden University in 1633, to house the quadrant of Rudolph Snellius, making it the oldest operating university observatory in the world, with the only older still existing observatory being the Vatican Observatory. - Frederik Kaiser ( Amsterdam , June 10 , 1808 -- Leiden , July 28 , 1872 ) was a Dutch astronomer . He was director of the Leiden Observatory from 1838 until his death . He is credited with the advancement of Dutch astronomy through his scientific contributions of positional measurements , his popularization of astronomy in the Netherlands , and by helping to build a state - of - the - art observatory in 1861 ( Today it is known as the '' Old Observatory '' ) . He made a series of drawings of Mars at its opposition in 1862 and made a fairly precise determination of its rotational period . Craters on Mars and on the Moon are named in his honour , as well as asteroid 1694 Kaiser . In Richard Proctor 's now - abandoned Martian nomenclature , Syrtis Major Planum was called the '' Kaiser Sea '' . This nomenclature was later dropped in favor of the one introduced by Giovanni Schiaparelli . Kaiser 's parents were Johann Wilhelm Keyser and Anna Sibella Liernur but he was raised by his uncle Johan Frederik Keyser from the age of eight . - The Constitution for the Kingdom of the Netherlands is one of two fundamental documents governing the Kingdom of the Netherlands as well as the fundamental law of the European territory of the Kingdom of the Netherlands. The present constitution is generally seen as directly derived from the one issued in 1815, constituting a constitutional monarchy. A revision in 1848 instituted a system of parliamentary democracy. In 1983, a major revision of the constitution was undertaken, almost fully rewriting the text and adding new civil rights. The text is very sober, devoid of legal or political doctrine. It includes a bill of rights. The constitution prohibits the judiciary to test laws and treaties against the constitution, as this is considered a prerogative of the legislature. There is no constitutional court in the Netherlands, except for the Constitutional Court of Sint Maarten which only governs the Sint Maarten legislator. The Kingdom of the Netherlands also includes Aruba, Curacao and Sint Maarten: there is an overarching instrument of the entire kingdom that has constitution characterisics: the Statute of the Kingdom of the Netherlands. - Leiden University (abbreviated as LEI), located in the city of Leiden, is the oldest university in the Netherlands. The university was founded in 1575 by William, Prince of Orange, leader of the Dutch Revolt in the Eighty Years' War. The Dutch Royal Family and Leiden University still have a close relationship; Queens Juliana and Beatrix and King Willem-Alexander are all former students. What is the relationship between 'frederik kaiser' and 'leiden university'?
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