Celsius

The Celsius scale was developed by Swedish astronomer Anders Celsius in 1742 and is used worldwide, particularly in scientific and everyday applications.

The Celsius scale is widely used in meteorology, industry, and medicine due to its practicality and alignment with the metric system. It is also commonly used alongside the Kelvin scale in scientific fields, where absolute zero (the lowest possible temperature) is defined as −273.15°C.

While most countries use Celsius as their primary temperature unit, some, like the United States, still use Fahrenheit. 

The Celsius scale provides a logical and standardized way to measure temperature, making it an essential part of global communication in science and daily life.