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

Air cannon launcher ansys analysis, Hello, I''m doing a project that needs ...

Hello, I''m doing a project that needs an ANSYS software for analysis calculation, is it possible to do me that if I provide you all the the information needed. Thank you

Corporate finance., The firm is considering an investment opportunity. The ...

The firm is considering an investment opportunity. The investment falls in the same class of risk as the firm, the project is financed with equity and debt. Explain all the steps i

Mobile Communication, A car, moving in the south-east direction at a veloci...

A car, moving in the south-east direction at a velocity of 5 m/s, receives a ray of power of -120 dBm each from the north, east and west. The carrier frequency is 300 MHz. (i) Sket

Telephone switching, advantage of spc

advantage of spc

Extractive metallurgy, differences between blast , reverbatory and electric...

differences between blast , reverbatory and electric furnaces

Rake angle, end cutting angle

end cutting angle

Construction, What are the problems arises during construction and their so...

What are the problems arises during construction and their solutions

Servicing of chemical de-icing systems, SERVICING OF CHEMICAL DE-ICING SYST...

SERVICING OF CHEMICAL DE-ICING SYSTEMS: It is essential for the correct operation of the ice protection system that servicing is carried out on a regular basis.  The fluids use

Flight control - linear system, Representations of a linear system The ...

Representations of a linear system The linear system of Section is shown in block diagram To determine the responseof the output of the system y(t) to an input u(t) the initial

Do you have fire engineer??, Do you have fire engineer??

Do you have fire engineer??

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