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The Kelvin scale and the kelvin are named after the British physicist and engineer William Thomson, 1st Baron Kelvin , who wrote of the need for an âabsolute thermometric scaleâ. The kelvin (symbol: K) is a unit increment of temperature and is one of the seven SI base units. The Kelvin scale is a thermodynamic (absolute) temperature scale where absolute zero, the theoretical absence of all thermal energy, is zero (0 K).
Best Answer: Kelvin is a SI base unit for measuring temperature. The weather forecast (depending on where you live) will use Celsius or Fahrenheit, but in science we prefer to use Kelvin. The symbol for Kelvin is K and does not, typically, use the degree symbol ...IE you say 310K not 310Â°K The zero point for Kelvin is sometimes referred to as 'absolute zero'.he Kelvin scale begins at absolute zero. Each degree on the scale is exactly the same size as a degree centigrade and 0 degrees Kelvin = -273 C. Therefore to convert between the two we have K = C + 273. Source(s): I am a retired research meteorologist, Ph.D, with some 45+ years experience.