Temperature as a property of matter

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Discussion Overview

The discussion revolves around the conceptualization of temperature as a property of matter, exploring its definitions, implications, and relationships with other physical concepts. Participants examine whether temperature can be considered a general property independent of well-defined states of matter, such as boiling and melting points.

Discussion Character

  • Conceptual clarification
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants propose that temperature can be viewed as a property of matter even without being associated with specific states, such as boiling or melting points.
  • One participant defines temperature in relation to internal energy and entropy, suggesting that this relationship supports the idea of temperature as a property.
  • Another viewpoint emphasizes that temperature is typically considered a property when linked to well-defined states, but raises the idea that in the context of the universe, temperature could be seen as a property of both localized regions and the universe as a whole when equilibrium is reached.
  • A participant argues that temperature should be defined as a thermodynamic state function, characterizing thermodynamic equilibrium.
  • Some participants challenge the notion of temperature as a property, suggesting that conditions like temperature are not properties in the same way as boiling points or resistivity, citing examples of different substances at the same temperature.
  • One participant discusses the relationship between temperature and wave matter, referencing equipartition and the Virial theorem to illustrate how temperature relates to the energy of particles.
  • Another participant mentions the thermal deBroglie relation as a connection between temperature and the wave properties of matter.

Areas of Agreement / Disagreement

Participants express differing views on whether temperature can be considered a property in general. Some support the idea while others contest it, indicating that the discussion remains unresolved with multiple competing perspectives.

Contextual Notes

There are varying definitions and interpretations of temperature, including its relationship with entropy, kinetic energy, and thermodynamic states. The discussion highlights the complexity and nuance in defining temperature as a property, with no consensus reached on its status.

Sultanphys
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Can we consider temperature in general as "property" without even been associated to well defined states of matter.
Like the boiling and melting points.
 
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Temperature is defined by the relationship between the internal energy and the entropy of a sample of matter. If I'm understanding your question properly, that makes the answer "yes" - but you would be better off spending some time understanding what temperature is and how it is related to entropy.
 
Taking the definition of temperature as the measure of average kinetic energy per particle,it is considered as property of material when associated with a well defined state of that material like it's boiling point ,say.but the question is heat transfer cannot be stopped,right?,so if we can say the universe is going towards a one temperature after sufficient time makes it property of well divided regions of universe that are at given one temperature,but also a property of the whole universe when reach the one common temperature,so we can consider it as property as long as universe is not well defined.
This is my question .
 
Sultanphys said:
Taking the definition of temperature as the measure of average kinetic energy per particle

It is better to define temperature as a thermodynamic state function characterising a thermodynamic equilibrium.
 
So the answer to my question that temperature can be considered as property in general is right?
 
Sultanphys said:
So the answer to my question that temperature can be considered as property in general is right?
I would say that a condition under which a substance is being kept (for instance its temperature) is not a 'Property'. Examples of properties would, imo, be its boiling point, its resistivity or its bulk modulus. Two different substances, with many differing properties can be side by side, in the same water bath and at the same Temperature.
 
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Temperature does indeed have a relationship with matter... it even has a relationship with wave matter!

Temperature ordinarily for physicists is thought about in terms of the equipartition. The energy of a single particle in terms of temperature is

E = \frac{3}{2}k_BT

The Virial theorem, also says something about relating the temperature of a system to the average kinetic motion of its constituents and can loosely be though of as

k_B T = \frac{1}{2} \mathbf{p} \cdot \mathbf{v}

Thirdly, temperature can be associated to the wave property of matter known as the thermal deBroglie relation.
 

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