The temperature scale based on units up to 100 is named after the Swedish scientist Anders Celsius. In which century did he live?

Explanation

Anders Celsius was born in Uppsala, Sweden in 1701. He was a Swedish scientist and astronomer. He is most famous for proposing the Celsius temperature scale, which is named after him. His thermometer was calibrated with a value of 0° for the boiling point of water and 100° for the freezing point. Later, after his death, it was reversed so that the freezing point is 0 degrees and the boiling point is 100.