The Kelvin scale, which is based on the Celsius scale, sets the absolute zero point at 0 Kelvin (or just 0K).
The Kelvin scale, which is based on the Celsius scale, sets the absolute zero point at 0 Kelvin (or just 0K).
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Thus, the melting point of water would be 273.16 K (0 °C + 273.16). Likewise, the boiling point of water is 373.16 K (100 °C + 273.16).
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Thus, the melting point of water would be 273.15 K (0 °C + 273.15).<ref name="Britannica">[https://www.britannica.com/science/kelvin Kelvin] (www.britannica.com)</ref> Likewise, the boiling point of water at pressure 1 atm is 373.15 K (100 °C + 273.15) and the [[triple point]] of water is at 273.16 K.
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It is named after the British physicist William Thomson, known as Lord Kelvin.<ref name="Britannica"/>