Zeroth law of thermodynamics


 The zeroth law of thermodynamics states that if two systems are in thermal equilibrium with a third system, then they are in thermal equilibrium with each other. This law establishes the concept of temperature and allows for the creation of a temperature scale. It is called the zeroth law because it was discovered after the first and second laws had already been established.

Importance of zeroth law of thermodynamics 

The zeroth law of thermodynamics is important because it establishes the concept of temperature and provides a basis for the measurement of temperature. It states that if two systems are in thermal equilibrium with a third system, then they are in thermal equilibrium with each other. This means that temperature is a property that can be used to describe the state of a system and can be measured using a thermometer.

Why is it called the zeroth law?
The law deals with the concepts used for designing the thermometer. It is called the "zeroth" law because it came to light after the first and second laws of thermodynamics had already been established and named, but was considered more fundamental and thus was given a lower number — zero.
What is an example of zeroth law?
If the cup of tea is 80°C and the surrounding temperature is 30°C , the tea will lose its heat until its temperature reaches 30 degrees. Here a hot cup of tea acts like the zeroth law of thermodynamics.
https://m.youtube.com/watch?v=S2hsaTO0bO8









Comments

Post a Comment

Popular posts from this blog

Maxwell equation

Image
  Maxwell therm odynamics relations(recall ) T he Maxwell therm odynamics relations are a set of equations derived by James Clerk Maxwell in 18 71 . These equations describe the relationship between therm odynamic state variables , such as pressure , temperature , volume , and entropy . They are named after Maxwell because he was the first to describe them mat hematically . The equations are used in therm odynamics to describe the behavior of systems in equilibrium . In particular , they are useful for predicting the properties of gases and liquids , which can then be used to model a wide range of phenomena . The Maxwell therm odynamics relations are derived from the first and second laws of therm odynamics . The first law states that energy is conserv ed in a system . The second law states that entropy increases in a therm odynamic process . The equations ...
Read more
  Law of Equipartition of energy Whenever we study kinetic theory of gas,we usually assume that a container contains gas molecules, these gas atoms keep moving from one place to another basically it means that they creates motion and exerts pressure. So when we supply heat or energy the motion and the pressure of the molecule increase. Thus this law describes how the supplied energy is distributed among the molecules in thermal equilibrium.       Thus the Law of Equipartition of Energy is a fundamental principle in physics that describes how energy is distributed among the different degrees of freedom of a system in thermal equilibrium. According to the law of equipartition of energy, for any dynamic system in thermal equilibrium, the total energy for the system is equally divided among the degree of freedom. According to this law, in a system in thermal equilibrium, each degree of freedom (i.e. each independent way that the system can store energy)...
Read more

Elementary Statistical Mechanics

Image
  Good evening to you all Today in my blog I will talk about yesterday’s topic which is elementary statistical mechanics. Elementary Statistical Mechanics Elementary statistical mechanics is a branch of physics that deals with the study of the behavior of macroscopic systems by analyzing the properties of their microscopic constituents. American physicist Josiah Willard Gibbs proposed the mathematical structure of statistical mechanics in the late 19th century. There are two main approaches to statistical mechanics: 1)       Classical Mechanics 2)       Quantum Mechanics Classical Mechanics Classical mechanics is based on the classical laws of physics, which deal with the study of macroscopic bodies. Quantum Mechanics   Quantum Mechanics is the study of microscopic bodies such as subatomic particles, atoms, and other small bodies. In Elementary statistical mechanics, a system can be described in terms of i...
Read more