Full Name: Anders Celsius
Why Famous: Founded the Uppsala Astronomical Observatory in 1741, and proposed the Celsius temperature scale which bears his name in 1742.
- 1736-04-20 French mathematician Pierre Louis Maupertuis begins Lapland expedition to measure latitude and shape of the earth, joined by fellow scientists Anders Celsius, Charles Etienne Louis Camus, Alexis Clairaut, and Pierre-Charles Le Monnier
- 1736-12-03 Astronomer Anders Celsius takes measurements that confirm Newton's theory that the earth was an ellipsoid rather than the previously accepted sphere
- 1741-12-25 Astronomer Anders Celsius introduces Centigrade temperature scale