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The thermodynamic temperature scales are based on the third law of thermodynamics:
The entropy of a system approaches a constant value as the temperature approaches zero. The entropy of a system at absolute zero is typically zero, and in all cases is determined only by the number of different ground states it has.
The two commonly used thermodynamic temperature scales are Kelvin (K), which has temperature increments the same size as Celsius and Rankine (°R), which had temperature increments the same size as Fahrenheit.
The thermodynamic temperature scales are further defined by extrapolation of the values PV at given temperatures as pressure approaches zero and thus the ideal gas law becomes a better and better approximation.
What else can I help you with?
What is the fundamental interval on the thermodynamics scale?
The fundamental interval on the thermodynamic scale is the Kelvin scale, where the interval between each degree is the same size. This scale begins at absolute zero and is used to measure temperature in thermodynamics.
What element did lord kelvin discover?
Lord Kelvin did not discover any new element. He made significant contributions to the field of thermodynamics, developing the Kelvin scale of temperature and laws of thermodynamics.
Which is better Celsius or Kelvin temperatures?
Celsius and Kelvin scale are also valid and useful. Celsius scale is a conventional scale based on the freezing and boiling point of water. Kelvin scale is an absolute, scientific, based on thermodynamics scale.
Why is the kelvin scale used rather than the celsius scale?
Because the Kelvin scale is an absolute scale. In the context of thermodynamics, 2 K is twice as "hot" as 1 K. And 3 K is three times as "hot". That is not true of the Celsius or Fahrenheit (or other temperature) scales.
Why is temperature measured by kelvin?
The Kelvin scale is used for temperature measurement because it is an absolute scale based on thermodynamics. The zero point of the Kelvin scale, 0 K, corresponds to absolute zero where molecular motion ceases. This makes Kelvin ideal for scientific calculations and comparisons.
Where did the term kelvin come from?
The term "kelvin" is named after the physicist Lord Kelvin, who developed the Kelvin scale for temperature measurement. Lord Kelvin made significant contributions to the field of thermodynamics and was a key figure in the development of the absolute temperature scale.
Measurement of temperature is based on which law of thermodynamics?
The measurement of temperature is based on the Zeroth Law of Thermodynamics, which states that if two systems are in thermal equilibrium with a third system, then they are in thermal equilibrium with each other. This allows for the establishment of a temperature scale and the comparison of temperatures between different systems.
Is the study of thermodynamics concerned primarily with macroscopic processes?
Yes, the study of thermodynamics primarily focuses on macroscopic processes involving large quantities of matter and energy, rather than individual particles or molecules. It deals with the relationship between heat and other forms of energy in systems at a macroscopic scale.
Who uses the Rankine temperature scale today?
The Rankine temperature scale is not commonly used today in scientific or everyday applications. It is mostly used in engineering fields, such as thermodynamics, particularly in the United States. It is similar to the Fahrenheit scale but uses absolute zero as its starting point.
What does Kelvin stand for?
It is named after the British physicist, Lord Kelvin, after his work on thermodynamics. A Kelvin is the basic unit of temperature based on the absolutes scale and is the standard unit for measuring temperature.
What has the author J Doenecke written?
J. Doenecke has written: 'Thermal scale modelling without thermal similitude' -- subject(s): Engineering models, Space vehicles, Thermodynamics
How is the thermodynamics process related to the 1st law of thermodynamics?
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