User Account

All Pages

Define Thermal equilibrium, Other Engineering

Assignment Help:
Thermal equilibrium
The definition and measurement of temperature must be logically preceded by the concept of thermal equilibrium and the Zeroth law. To determine operationally whether two systems are in thermal equilibrium, they are placed together in contact and isolated from the surroundings. If one of them is hot and the other cold then, after a certain period of time, the former feels less hot and the latter feels less cold. Simultaneously, changes in their physical properties, such as length, electrical resistance, etc. occur. After a sufficiently long time (equivalent to the relaxation time) no further changes take place. The two systems are then said to be in thermal equilibrium; they are said to have the same temperature.
Definition
Two systems are equal in temperature if no change in any physical property occurs when they are brought into communication. This definition must not be reversed. It does not imply that “when two systems are equal in temperature, no changes result from their communication”. For instance, if an electric lamp and a battery are connected by means of an electrical conductor, then the lamp will light up; this is, of course, a work interaction. Temperature is at the heart of the difference between work and heat; hence, the necessity to employ rigour in defining concepts relating to temperature. Two points are of significance with reference to the discussion on thermal equilibrium and equality of temperature:
• If the definition of temperature equality has to be given in such a manner as to apply equally well when it is reversed, the following condition should be added : “in the absence of any work interactions”.
• The process of “communication” indicated in the definition is in fact “thermal” communication (excluding any “work interactions”). But this usage leads to circularity and hence is not employed until after temperature equality is defined.

Related Discussions:- Define Thermal equilibrium

Digital signal processing, inverse DIFFFT algorithm

inverse DIFFFT algorithm

Fire protection test, Go to https://blackboard.newhaven.edu/ user: user:...

Go to https://blackboard.newhaven.edu/ user: user:Aaldo6 Pass:1992May239645 Class: fire 2209 Occup safety$ hilt-fire take the test its one hour test multiple choices its due t

Microbiology, Explain the following observations: cells of Escherichia coli...

Explain the following observations: cells of Escherichia coli fermenting glucose grow faster when NO3 - is supplied to the culture and then grow even faster when the culture is hig

Theory of relativity, what is theory of relativity?

what is theory of relativity?

Assignment, Financial Management, Finance This case has been framed in orde...

Financial Management, Finance This case has been framed in order to test the skills in evaluating a credit request and reaching a correct decision. Perluence International is large

Tools, . An engineering department chair wants to maximize the use of scho...

. An engineering department chair wants to maximize the use of scholarship dollars to shape the enrollment of the incoming freshmen. All applicants take an engineering aptitude t

Free Vibration Problem, I have a multi-part three mass, three spring and th...

I have a multi-part three mass, three spring and three coordinate system that I need to find: The free vibration of the second mode Magnitude of the steady-state force based on a g

ENGINEERING SCIENCE, QUESTION 7 As a forensic materials expert – you have ...

QUESTION 7 As a forensic materials expert – you have been asked to identify a metallic powder found on the clothing of someone suspected of fabricating an incendiary device used i

Roll-compacting, Q. Describe the continuous production of metal strip by ro...

Q. Describe the continuous production of metal strip by roll compacting of powder. Differentiate between impregnation and infiltration. Ans. Roll-compacting : It is the

High rise buildings - fire protection engineering, High rise buildings: ...

High rise buildings: High rise buildings have their own particular requirements for fire safety and for fire fighting.  Means of escape rely on most people descending the stai

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd