Anders Celsius biography for kids begins with a friendly fact. Anders Celsius was a Swedish astronomer born in Uppsala on November 27, 1701. He taught astronomy at Uppsala University, where he was appointed Professor of Astronomy in 1730, a position he held until his death on April 25, 1744, at the age of 42. During this time, he helped build the Uppsala Observatory in the early 1740s.
Anders Celsius biography for kids: life and legacy
Celsius kept careful weather and sky records, beginning his meteorological diary observations in Uppsala in 1722, which now constitute one of the world’s longest continuous temperature series. He studied sunspots and auroras, and in 1736, he participated in an expedition to Lapland to measure a degree of latitude, confirming Isaac Newton’s theory that the Earth is an oblate spheroid. Also, he worked with other scientists to measure the shape of the Earth. His careful notes helped others across Europe share data.
In 1742, Celsius proposed a neat temperature scale based on two easy points of water, defining the freezing point of water as 0° and the boiling point as 100°. At first, he put zero at boiling and 100 at freezing. A few years later, the scale was reversed by Carl Linnaeus to the form we use now. Today almost every country uses Celsius alongside the kelvin in science.
Why the scale matters and where you meet it
The Celsius scale is simple and practical. It gives one hundred equal steps between freezing and boiling. For kids, that makes measuring and learning easier. Quick points to remember:
- 0 °C is freezing.
- 100 °C is boiling.
- About 20 to 22 °C feels like a cozy room.
- 37 °C is close to human body temperature.
If you need Fahrenheit, use the formula: F equals C times nine fifths plus thirty two. So 0 °C equals 32 °F, 20 °C is about 68 °F, and 100 °C is 212 °F.
A tiny, safe experiment to try
Try a simple observation with a grown up. Put one thermometer inside and one near a window outside. Read both at the same time. You will usually see the outside one read lower on a chilly day. With adult help, try measuring water temperature before and after gentle heating. Boiling water is hot and needs adult supervision. These steps show how temperature changes and why a scale helps us talk about those changes.
Pronunciation and fun facts
Say his name like this: AN-ders SELL-see-us. People still sometimes say centigrade. Celsius lived during the Enlightenment when scientists shared data across Europe. His work helped standardize measurements and made science easier to share.
Read or listen to a story about Anders Celsius now: Read or listen to a story about Anders Celsius now: For 3-5 year olds, For 6-8 year olds, For 8-10 year olds, and For 10-12 year olds.
I tell this story because kids already meet Celsius on thermometers. It is a tiny, brilliant idea that makes everyday science feel like a friend. Try it tonight and see what questions pop up. Share the small discovery with family after dinner, and note results tomorrow.
