Olof Celsius

A botanist, filologist and clergyman, Celsius was a professor at Uppsala university, Sweden. He was born in 1670 and died in 1756. Celsius was a mentor of the botanist and scientist Carolus Linnaeus. Celsius wrote his most famous book on biblical plants - Hierobotanicos in 1745-47. Olof Celsius's nephew Anders Celsius was an astronomer who invented a temperature scale with 0 representing the boiling and 100 the freezing temperature of water. Linnaeus in 1744 reversed the scale to the Celsius or centigrade scale we use today.