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

Single input unbalanced output differential amplifier, dc and ac analysis

dc and ac analysis

Mass balance reactions, A continuous fractionating column separates benzene...

A continuous fractionating column separates benzene and toluene into two product streams. We were given all the mass fractions which makes this question easy because all we must ca

Cro, derive the expression of deflection of beam in CRO

derive the expression of deflection of beam in CRO

Finance choice, Question #1 Which of the following statements is false? ...

Question #1 Which of the following statements is false? A) For corporations, interest paid on its debt is a tax deductible expense. B) For corporations, dividend paid on its

Router, how does the Ip message finally reassemble?

how does the Ip message finally reassemble?

Vacuum investment casting , Vacuum Investment Casting : TITANIUM INVEST...

Vacuum Investment Casting : TITANIUM INVESTMENT CASTING uses lost-wax investment tooling to cast intricate shapes in titanium, zirconium and their alloys. A wax pattern is coa

Switching transistors, SWITCHING TRANSISTORS When a transistor is to be...

SWITCHING TRANSISTORS When a transistor is to be used as a switching device, it operates either as an open circuit (i.e. in the cut-off region) or as a short circuit (i.e. in t

Matlab, 2. Write a MATLAB program to perform discounted reward value iterat...

2. Write a MATLAB program to perform discounted reward value iteration. Show me the MATLAB code and also an output from your code for solving the problem provided in the data above

Analog electronics, what are sampling gates ?

what are sampling gates ?

Double pipe condenser, what is the meaning of water out?

what is the meaning of water out?

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