On 25 December 1741, Swedish astronomer Anders Celsius introduced the Centigrade temperature scale, an innovation that revolutionised thermometry by dividing the range between the freezing and boiling points of water into 100 equal degrees.
This breakthrough offered a practical and universal system for scientific measurement, enhancing precision in experiments and fostering global adoption in meteorology and science.
Originally inverted, with 100° representing freezing and 0° boiling, the scale was later reversed to its modern form, laying the foundation for the Celsius scale we rely on today.
