## How many laws of thermodynamics are there? (3 or 4?)

There are total four laws of thermodynamics. They are; Zeroth law The zeroth law gives us the concept of thermal equilibrium. Zeroth law states that if two bodies are in thermal equilibrium with the third body, then that two bodies are also in thermal equilibrium with each other. For more information on zeroth law, check … Read more

## Why are the Laws of Thermodynamics Important? (Simple)

The laws of thermodynamics are very important in our day to day life as all the four laws govern the universe. Every single thing which happens around us shows the importance of the laws of thermodynamics. Also; In this article, I’ve explained to you the reason why these laws are important along with the examples. … Read more

## Who discovered the third law of thermodynamics? (And when?)

The third law of thermodynamics was discovered by German chemist Walther Hermann Nernst during the year 1906 to 1912. Explanation: Let me tell you some history behind the discovery of Third law of thermodynamics. When German chemist Walther Hermann Nernst studied about the second law of thermodynamics, his mind was completely disturbed. He studied that … Read more

## 2 Major Application of Third law of thermodynamics (Easy)

There are two major applications of Third law of thermodynamics, which are mentioned below. Explanation:  #1 How can we find whether the substance is pure crystalline or not, using the third law of thermodynamics? It is not always true that the entropy of all the substances will be zero at absolute zero temperature. Let me … Read more

## Third Law of Thermodynamics Equation (Simple & Easy)

The third law of thermodynamics equation is mentioned below. Here, I’ll also tell you why entropy of pure crystalline substances is zero. So first of all, the statement of third law of thermodynamics is; “The value of entropy of a completely pure crystalline substance is zero at absolute zero temperature” Now let us see the … Read more

## Why Second Law of Thermodynamics is Needed? (2 Reasons)

There are two main reasons why second law of thermodynamics is needed or important. Let’s take an example of hot coffee to understand why we need the second law of thermodynamics. Just imagine, what happens when you keep the hot cup of coffee in an open room? The coffee will cool down. Right? In thermodynamics, … Read more

## What is Second Law of Thermodynamics in Chemistry? (Easy)

In chemistry, the second law of thermodynamics is mainly focused on entropy. The entropy statement of the second law of thermodynamics is given below. Entropy statement of Second law of thermodynamics: “In all the spontaneous processes, the entropy of the universe increases.” Above statement can be mathematically written as; The entropy statement of the second … Read more

## What is Second Law of Thermodynamics in Physics? (Easy)

In physics, the second law of thermodynamics deals with two devices; The second law of thermodynamics for the heat engine is known as Kelvin-Plank’s statement. While the second law of thermodynamics for heat pump is known as Clausius statement. Let’s discuss these two statements below. Kelvin Planck’s statement for heat engine Kelvin Planck’s statement: “It … Read more

## Who discovered the second law of thermodynamics? (And when?)

The short answer: German physicist Rudolf Clausius discovered the second law of thermodynamics during the year 1850. Explanation:  I hope you have got the answer to your question. For more detailed information on Second law of thermodynamics, check the ultimate guide on Second law of thermodynamics. (This guide has all the important knowledge about Second law … Read more

## How is the first law of thermodynamics related to the movement of an automobile?

First of all, we know that according to the first law of thermodynamics; “Energy can neither be created nor destroyed, but it can only be transformed from one form to another” Now a question for you. Do you know how the engine of your car or bike works? It is just a conversion of heat … Read more