Anders Celsius (1701)
Celsius was born in 1701 in Sweden. He succeeded his father as professor of astronomy at the University of Uppsala in 1730. It was there that he built Sweden's first observatory in 1741. One of the major questions of that time was the shape of the Earth. Isaac Newton had proposed that the Earth was not completely spherical, but rather flattened at the poles. Cartographic measuring in France suggested that it was the other way around - the Earth was elongated at the poles. In 1735, one expedition sailed to Ecuador in South America, and another expedition traveled to Northern Sweden. Celsius was the only professional astronomer on that expedition. Their measurements seemed to indicate that the Earth actually was flattened at the poles.
Celsius was not only an astronomer, but also a physicist. He and an assistant discovered that the aurora borealis had an influence on compass needles. However, the thing that made him famous is his temperature scale, which he based on the boiling and melting points of water. Celsius' fixed scale for measuring temperature defines zero degrees as the temperature at which water freezes, and 100 degrees as the temperature at which water boils. This scale, an inverted form of Celsius' original design, was adopted as the standard and is used in almost all scientific work.
Anders Celsius died in 1744, at the age of 42. He had started many other research projects, but finished few of them. Among his papers was a draft of a science fiction novel, situated partly on the star Sirius.
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Who is Anders Celsius for kids? ›
Celsius was not only an astronomer, but also a physicist. He and an assistant discovered that the aurora borealis had an influence on compass needles. However, the thing that made him famous is his temperature scale, which he based on the boiling and melting points of water.
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What happened to Anders Celsius? ›
In 1725 he became secretary of the Royal Society of Sciences in Uppsala, and served at this post until his death from tuberculosis in 1744. He supported the formation of the Royal Swedish Academy of Sciences in Stockholm in 1739 by Linnaeus and five others, and was elected a member at the first meeting of this academy.
What are 2 facts about Anders Celsius? ›
Anders Celsius (born November 27, 1701, Uppsala, Sweden—died April 25, 1744, Uppsala) was an astronomer who invented the Celsius temperature scale (often called the centigrade scale). Celsius was professor of astronomy at Uppsala University from 1730 to 1744, and in 1740 he built the Uppsala Observatory.
What is the story of Celsius? ›
Anders Celsius is most familiar as the inventor of the temperature scale that bears his name. The Swedish astronomer, however, also is notable as the first person to make a connection between the radiant atmospheric phenomenon known as the aurora borealis, or the northern lights, and the magnetic field of the Earth.
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