Kelvin: Kelvin (K) is the base unit of temperature in the International System of Units (SI) and is named after the Scottish physicist William Thomson, 1st Baron Kelvin. The Kelvin scale is an absolute thermodynamic temperature scale where 0 K, or absolute zero, is the point at which molecular motion ceases, representing the lowest possible temperature. The scale increments are equivalent to those of the Celsius scale, with each Kelvin unit corresponding to one degree Celsius. Kelvin is primarily used in scientific research, particularly in physics and chemistry, for precise measurements of temperature, including cryogenics, space science, and high-temperature processes. Unlike Celsius and Fahrenheit, the Kelvin scale does not use the term "degrees," and temperatures are simply expressed in Kelvins (e.g., 300 K).
Celsius: Celsius (°C) is a scale and unit of measurement for temperature named after the Swedish astronomer Anders Celsius. It is based on the properties of water, setting the freezing point at 0 degrees and the boiling point at 100 degrees under standard atmospheric pressure (1 atmosphere or 101.325 kPa). The Celsius scale is part of the metric system and is widely used around the world, especially in scientific contexts and for everyday temperature measurements. This scale is also integral to weather reports, cooking, and in most temperature-sensitive industrial processes.
Kelvin (K) | Celsius (°C) |
---|---|
-395 K | -668.15 °C |
-394 K | -667.15 °C |
-393 K | -666.15 °C |
-392 K | -665.15 °C |
-391 K | -664.15 °C |
-389 K | -662.15 °C |
-388 K | -661.15 °C |
-387 K | -660.15 °C |
-386 K | -659.15 °C |
-385 K | -658.15 °C |