Kelvin

Definition

Kelvin is a scale for registering temperature in which 0 degrees represents absolute zero.

Purpose

The purpose of the Kelvin scale is to provide an absolute measure of temperature based on the principles of thermodynamics. It is widely used in scientific research, particularly in physics and engineering, to measure and compare thermal energy.

Examples of Use

1. Scientific Research: Kelvin is used to measure temperatures in laboratory experiments, particularly in studies involving extremely low or high temperatures.
2. Astrophysics: The temperature of stars and other celestial bodies is often measured in Kelvin.
3. Cryogenics: Kelvin is used in the field of cryogenics to measure temperatures approaching absolute zero.

Related Terms

• Celsius: A temperature scale where water freezes at 0 degrees and boils at 100 degrees under standard conditions.
• Fahrenheit: A temperature scale where water freezes at 32 degrees and boils at 212 degrees under standard conditions.
• Absolute Zero: The lowest possible temperature, at which point molecular motion ceases, equivalent to 0 Kelvin or -273.15 degrees Celsius.

Notes

The Kelvin scale does not use degrees; temperatures are simply referred to in Kelvins (K). It is an essential tool for scientists and engineers working with temperature-sensitive processes.