MIKKEL JUUL JENSEN / SCIENCE PHOTO LIBRARY MIKKEL JUUL JENSEN / SCIENCE PHOTO LIBRARY
Kelvin thermometer. Computer artwork of a thermometer with its scale marked in degrees kelvin (K). The kelvin is a unit of measurement for temperature. It is one of the seven base units in the International System of Units (SI). Zero kelvin is known as absolute zero and is the coldest possible temperature.
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