preface

Chapter 1: What is Thermodynamics?

The great law that applies to the entire universe
Our life is physics
How to change the form of energy
Analysis methods in thermodynamics
The protagonist who leads thermodynamics
Analyzing the gas profile

Chapter 2: What is a Gas?

Volume and pressure of gases with opposite properties_Boyle's law
Volume and temperature of gases with similar properties_Charles' law
The Time of Three-Way Meeting_Boyle-Charles Law
Simultaneously analyzing the relationships between five elements_Avogadro's law (1)
Simultaneously analyzing the relationships between five elements_Avogadro's law (2)
Simultaneously analyzing the relationships between five elements_Avogadro's law (3)
Gas properties summarized in a single line: Ideal gas state equation (1)
Gas properties summarized in a single line: Ideal gas state equation (2)
Final preparations before embarking on a thermodynamic journey (1)
Final preparations before embarking on a thermodynamic journey (2)

Chapter 3: What is heat?

Energy is money
Energy exchange is a transaction
How much energy was transferred?_Calories (Q)
How We Make Energy_Metabolism
Where and how much does heat move?_Heat capacity (C)
How much heat is needed to raise the temperature by 1℃?_Specific heat (c)
Understanding Calorie Expressions
Specific heat is the inertia of heat.
Specific heat of gas

Chapter 4: What are the laws of thermodynamics?

Different perspectives on chemistry and physics
First Law of Thermodynamics
Understanding the flow of energy
Zeroth law of thermodynamics
Where 'heat' does 'hard work'_heat engine
Unraveling the Thermodynamic Process (1)
Unraveling the Thermodynamic Process (2)
Unraveling the Thermodynamic Process (3)

Chapter 5: What is a Heat Engine?

Typical external combustion engine_Stirling engine
Stirling Engine at a Glance
Let's make a heat engine that works well.
Ideal heat engine_Carnot engine
What is the difference between a gasoline engine and a diesel engine?

Chapter 6: Heat, Energy, and Entropy

Why Energy Cannot Be Conserved
Second Law of Thermodynamics
What is entropy?
Entropy always increases
Measure of disorder
Can we figure out what entropy is?
What is a perpetual motion machine?
Third Law of Thermodynamics

Conclusion

A quick overview of the tricky theory of thermodynamics!
All concepts and principles of thermodynamics, starting from the basics and building a solid foundation.

Thermodynamics is the study of the relationship between heat and work.
Although the purpose of thermodynamics research is simple and clear, the numerous complex calculations and problems that follow this simple question can make you want to give up right away.
But the numbers, symbols, and formulas that seem difficult are just a means, not the essence.
Let's boldly kick these out and get straight to the heart of thermodynamics.
Thermodynamics, compared to other fields of physics, including Newtonian mechanics, has a different starting point, a different object of view on nature, and a different method of solving problems.
If you start by understanding this point, you can easily grasp the essence of thermodynamics.

In fact, thermodynamics is a discipline that is closer to our daily lives than any other scientific field.
This is because the most common energy that exists around us is heat energy.
Since humans began using fire, thermal energy has been widely used in all aspects of life.
In particular, the invention of the heat engine ushered in an era of thermal energy revolution.

The emergence of the heat engine, a machine that converts heat into work, was a huge event both historically and academically.
Because it is overwhelmingly more difficult to convert heat into work than to convert work into heat.
For example, if you rub your palms together, they become hot.
This is an example of turning work into heat.
The opposite is to heat your hands and rub your palms together.
If you think about it this way, you can immediately understand why it is difficult to convert heat into work.
Even such a complex thermodynamic theory can be clearly understood with a simple everyday analogy.
If you understand the true nature of thermodynamics, which represents the flow of energy itself, even thermodynamic problems that come with difficult formulas will be transformed into problems that can be easily calculated mentally.

The laws of thermodynamics and the gas equation, energy, heat engines, and entropy
The essence of work, heat, and energy that you can understand immediately after reading it.

Thermodynamics is a discipline that deals with 'energy'.
Therefore, gas, which has the most energy among the states of matter, is the main subject of research.
This means that simply by identifying the gas, we can easily understand the core concepts of basic thermodynamics.
The formulas that gave us headaches, such as Boyle's law, Charles' law, and Avogadro's law, are merely profiles that summarize the properties of gases, such as volume, pressure, and temperature.
It's exactly the same as how we usually write height, weight, and age on our profiles.

Energy and heat, the core research topics of thermodynamics, can also be understood through intuitive analogies.
Let's think of energy as money, and heat as a money transaction.
Money is the numerical representation of economic transaction power, and energy is the numerical representation of the ability to do work, so it makes sense.
Heat also represents the 'movement of energy', and money transactions are also concepts that refer to the 'movement of money'.
Going a little further, since trading cannot be done alone, heat also requires two or more objects (systems) with different temperatures.
Just as a boss pays his employees, heat moves from objects of higher temperature to objects of lower temperature.
Almost all thermodynamic concepts can be easily understood with this simple analogy.
If you strip away these complex formulas and theories and focus on the essence of thermodynamics within them, you will realize that the concepts and problems of thermodynamics that seemed difficult, such as heat, specific heat, and energy flow, are actually not that difficult.

The simplest and fastest way to understand the core concepts of thermodynamics
Complex thermodynamic problems solved in an instant!

Thermodynamics is considered one of the most difficult fields in physics.
This is because the approach and solution method are quite different from the conventional physics represented by Newtonian mechanics.
Therefore, the 『Thermodynamics Textbook that You Can Understand Immediately After Reading』 aims to be a guide that makes thermodynamics easy to understand, and rather than simply following the explanatory methods of existing physics, it focuses solely on 'understanding.'
We boldly broke away from the framework of theory and formulas and attempted an easy and intuitive approach not found in other physics books.
It not only details the main concepts and laws of thermodynamics in middle and high school, but also goes on to cover the basics and direction of thermodynamics in college.
Of course, this book also contains practical problems.
However, since it contains not only problems and solutions and correct answers, but also details how to approach and solve problems, looking at the problems will actually help you understand the concepts of thermodynamics more clearly.
After reading the book, you will be able to solve even the most complex thermodynamic problems simply by relying on the essence and concepts, without relying on formulas.