Convert Celsius to Reaumur

The Celsius scale was developed by the Swedish astronomer Anders Celsius in 1742. Initially, Celsius defined 0° as the boiling point of water and 100° as the freezing point, but his scale was later inverted by other scientists, including Carolus Linnaeus. The modern Celsius scale, with 0°C as the freezing point and 100°C as the boiling point of water, became standard. The scale is part of the International System of Units (SI), and it is widely used in science, industry, and everyday life.

The Réaumur scale was developed by the French scientist René Antoine Ferchault de Réaumur in 1730. Réaumur created this scale based on the properties of water and the idea of dividing the temperature range between freezing and boiling points into 80 intervals, making it convenient for use in industries like brewing and metallurgy. The scale was once widely used in Europe, particularly in France, Germany, and parts of Russia. However, it was eventually supplanted by the Celsius scale, which became more universally adopted due to its simplicity and consistency with the metric system. Despite this, the Réaumur scale is still of historical interest and is sometimes used in specialized fields such as certain aspects of thermometry and scientific research.