Zeroth law - thermodynamics, Mechanical Engineering

Equality of Temperature:

Two systems are having equal temperature if there are no changes in their properties when they are kept in thermal contact with each other.

Zeroth Law: Statement

When a body A is in thermal equilibrium with body B, and separately with body C, then B and C both will be in thermal equilibrium with each other. This is called as the zeroth law of thermodynamics.

This law forms basis for all the temperature measurement. The thermometer functions as body 'C' and compares unknown temperature of body 'A' with a known temperature of body 'B'

2478_Equality of Temperature.png

Fig.Zeroth Law

This law was given by R.H. Fowler in the year 1931. However, as the 1st and 2nd laws already existed at that time, it was selected as Zeroth law so that it precedes the 1st and 2nd laws to form a logical sequence.

 

Posted Date: 10/15/2012 2:01:07 AM | Location : United States







Related Discussions:- Zeroth law - thermodynamics, Assignment Help, Ask Question on Zeroth law - thermodynamics, Get Answer, Expert's Help, Zeroth law - thermodynamics Discussions

Write discussion on Zeroth law - thermodynamics
Your posts are moderated
Related Questions
Find out the smallest force: A block weighing 800 N is raised up with the help of two 6o wedges B and C of negligible weights as illustrated in Figure. If the coefficient of s

Laser-induced breakdown spectroscopy (LIBS) is a type of spectroscopy that uses plasma generated by a laser pulse. A schematic of a LIBS system is shown in the figure. The laser is

Explain the Methods of solid modeling The various methods for representing the solids are : (i)  Half-space method (ii)  Boundary representation method (b-rep) (iii)

Working of Clutch : The clutches are operated mechanically through linkages. When operator presses the clutch lever, the pressure on the clutch plates reduces to zero, hence the c

A system consisting of 2kg of R-134a undergoes a cycle composed of the following processes: Process 1-2: constant volume from P1= 10 bar, x1=0.6 to saturated vapor. process 2-3 con

Determine the moment of forces: The side of a square ABCD is 1.60 m long .Four forces equal to 6, 5, 4 and 8 N acts respectively along with the line CB, BA, DA, DB. Determine

what is cone friction?

(a) Evaluate the buckling load of column with one end fixed other free of 8m length by using Euler's formula. Given : I min = 1390m 4 E = 2 X 10 5 N/mm 2 (b) Derive a

One can increase the toughness of a ceramic material by introducing fibers to the structure of the ceramic and create a ceramic-matrix composite. However, unlike other fiber-reinfo

Assembly Processes The assembly process for machines and mechanisms is the part of the manufacturing process concerned with the consecutive joining of the finished parts into