Zeroth law - thermodynamics, Mechanical Engineering

Assignment Help:

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.

 


Related Discussions:- Zeroth law - thermodynamics

Determine the relative error in the function, Determine the relative error ...

Determine the relative error in the function y = ax 1 m1 x 2 m2 ........x n mn If u = 4x 2 y 3 / Z 4 and error in x, y, z be 0.a, compute the relative maximum error in u ta

Plant layout and equipment spacing, Q. Plant layout and equipment spacing? ...

Q. Plant layout and equipment spacing? Layout refers to the location of plants (and process/power units within the plants and associated utilities (or balance of plant)) as wel

Steam engines, Steam engines: Steam engine is heat engine which conver...

Steam engines: Steam engine is heat engine which converts heat energy to mechanical energy. The pressure energy of steam acts on piston and piston is moved to and fro in a cyl

Preliminary layout considerations, Q. Preliminary layout considerations? ...

Q. Preliminary layout considerations? This section outlines the key aspects to be considered when preparing preliminary layouts during the evaluate phase. Preliminary layouts a

Mounting systems for the welding head, Mounting Systems For The  Welding H...

Mounting Systems For The  Welding Head Submerged arc welding head may be mounted by one of the following three methods. a. Fixed type b. Carriage mounted type c. Boom mounted ty

Safety benefits - industrial safety, Safety Benefits - Industrial Safety ...

Safety Benefits - Industrial Safety An industry or a company which follows safety programmes is benefitted in several ways. The benefits are shared among employer and employee

Water vortex fountain, hi there there is many way to make the water vortex...

hi there there is many way to make the water vortex but am not sure how can we make the one like > (www.williampye.com/work/charybdis)

Evaluate the temperature gradient in the flow direction, A plane wall (ther...

A plane wall (thermal conductivity = 10.2 w/m o c) of 100 mm thickness and area 3m 2 has steady surface temperature of 170 o c and 100 o c. Evaluate :- (i) The temperature

Explain about the deep foundation, Explain about the Deep foundation D...

Explain about the Deep foundation Deep foundations are those where the depth D is much larger than B. Piles, wells, piers and caissons belong to this group.

Calculate the thermal efficiency of the cycle, An engine uses air as the op...

An engine uses air as the operating substance. At the beginning of compression the pressure is 90 KN /m 2 and the temp. is 40 0 C. During the adiabatic compression, the volume is

Write Your Message!

Captcha
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!

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