![]() At absolute zero, the particles in a system have the minimum possible energy and are at their lowest possible state of motion. Temperature is a measure of the thermal energy of a system, and it represents the direction in which heat flows. The reason why you cannot have a negative Kelvin value is rooted in the concept of temperature itself. The Kelvin scale is based on the behaviour of gases, where temperature is directly proportional to the average kinetic energy of the particles. Absolute zero is defined as 0 Kelvin (K) or -273.15 degrees Celsius (☌). It is an absolute temperature scale, meaning it starts at absolute zero, which is the lowest possible temperature. Kelvin is the unit of measurement for temperature in the International System of Units (SI). Why can't you get a negative Kelvin value?: The Kelvin scale is considered to be more precise and accurate than other temperature scales, as it is based on the fundamental properties of matter. It is the primary temperature scale used in scientific research and is often used in calculations involving gas laws, thermodynamic equations, and other scientific principles. The Kelvin scale is widely used in scientific and engineering applications, particularly in fields such as physics, chemistry, and thermodynamics. The Kelvin scale is an absolute scale, meaning that it does not use any arbitrary reference points like the Celsius or Fahrenheit scales. Absolute zero, which is the point at which all molecular motion ceases, is defined as 0 Kelvin (0 K). The Kelvin scale is based on the idea that temperature is directly proportional to the average kinetic energy of the particles in a substance. Lord Kelvin's work on the concept of absolute zero led to the development of the Kelvin scale. ![]() He proposed the idea of an absolute temperature scale that would measure the lowest possible temperature, known as absolute zero. Lord Kelvin made significant contributions to the field of thermodynamics and was a pioneer in the study of heat and energy. The Kelvin scale, also known as the absolute temperature scale, was named after the Scottish physicist William Thomson, 1st Baron Kelvin.
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