a unit of temperature measurement used in science that starts at absolute zero (the coldest possible temperature).
Named after William Thomson, 1st Baron Kelvin, a 19th-century Scottish physicist. He developed the concept of absolute zero and this temperature scale. The unit honors his contribution to thermodynamics.
The Kelvin scale is unique because it's the only temperature scale named after a person, and it's the official temperature measurement for the entire scientific world—even though most people have never heard of Lord Kelvin!
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