Recommendation
I hope you can understand the original papers of these genius scientists.
The Impact of Dr. Pauling's 1931 Paper _ A Surprise Interview with Dr. Hershbach

First Encounter | The History of Chemistry

The Birth of Alchemy and Chemistry_Chemistry Developed Through Alchemy
Discovery of Acids and Bases: Invention of Litmus Paper
Lavoisier's Chemical Revolution_Chemical Nomenclature and Introduction to Chemistry
Berthollet, who discovered the principles of dyeing and the reactions of elements after Lavoisier
The emergence of chemical affinity_Geoffroy, who created the chemical affinity table
Laws of Atomic and Molecule Gas Reactions
Element symbols and atomic weights_Berzelius, who created element symbols, and Richards, who measured atomic weights
The History of Electrolysis: Discovering Numerous Metals Through Electrolysis
Van der Waals' study of real gases_Cleperon's ideal gas equation

Second Encounter | The History of Organic Chemistry

Bergman, who first used the term organic matter
Vitalism: Aristotle's Soul and Erasistratus' Pneuma
Proving that Wöhler's elemental synthesis and vitalism are wrong
Liebig and the molecular formula of organic compounds_The content of carbon, hydrogen, and oxygen in an organic compound determines its molecular formula.
The Law of Substitution_The Law of Substitution Discovered by Dumas
Gerhard's type theory: representing all organic compounds in four types.
Frankland and the valence_first introduced the concept of valence in chemical bonding
Kekulé and Cooper, who discovered the 4-valent element_the case where the atomic number is 4
Brown's structural formula_Brown's structural formula of organic chemicals illustrated
Hexagonal ring of benzene_Kekulé, who discovered the structural formula of benzene

Third Encounter | Lewis's Theory of Chemical Bonding

History of Analytical Chemistry: From Ancient Times to Today
The emergence of the atomic model: Thomson's atomic model and Rutherford's atomic number
Lewis, the founder of chemical bonding theory, introduced the cubic atomic model to explain chemical bonding.
Lewis's Dot Symbol: Explaining Chemical Bonds That the Cubic Atomic Model Cannot Explain

Fourth Encounter | Orbital Theory

The Birth of Quantum Mechanics: Heisenberg's Uncertainty Principle
The 3D Hydrogen Problem: Quantum Mechanics in 3 Dimensions
Hund's Rule_Rules for arranging electrons in the ground state

Fifth Meeting | Quantum Chemistry

Mulliken Wins Nobel Prize in Quantum Chemistry
Linus Pauling: Creating the Theory of Quantum Chemistry
Molecular Orbitals_Hund and Mulliken's Molecular Orbitals
Inside Pauling's Paper: Quantum Chemical Explanation of Methane

The Atom and Molecule _Lewis's paper in English
The Nature of the Chemical Bond _Linus Pauling's paper in English

Quantum chemistry required to develop new drugs or optimize industrial processes,
Inside the paper of Linus Pauling, the founder of quantum chemistry!

Quantum chemistry is an academic discipline that applies the principles of quantum mechanics to various problems in chemistry and theoretically explains the movements of atoms and electrons, molecular structures, and chemical reactions.
This field lies at the intersection of physics and chemistry, studying the properties and interactions of atoms and molecules.
Quantum chemistry plays a very important role in understanding chemical phenomena.
Quantum chemistry can be used in a variety of ways, including predicting molecular structures, assessing the stability of compounds, and predicting reaction rates.
Accurately predicting molecular structures using quantum chemistry can help us understand and design the properties of new compounds.
For example, developing new drugs or optimizing industrial processes requires precise understanding of the structure of the compound in question, while quantum chemistry is also necessary to understand the mechanisms of chemical reactions or to find chemically stable substances.


The scientist who pioneered the world of quantum chemistry was Linus Pauling.
In 1931, Pauling published his first paper explaining chemical bonding using the principles of quantum mechanics.
He thought that electrons were described by wave functions that satisfied the Schrödinger equation of quantum mechanics.
In a 1931 paper, the Schrödinger equation was used to completely explain the chemical bonding structures of various compounds.
In particular, the structure of the methane molecule, which consists of one carbon atom and four hydrogen atoms, was explained using quantum mechanics.
In addition, it explains how atoms are combined in various molecules.


Since the publication of this paper, a new field of chemistry called quantum chemistry has emerged.
And from this time on, chemistry students also began to learn quantum mechanics in their undergraduate courses.
With the advent of quantum chemistry, chemists also entered the quantum world.
Pauling won the 1954 Nobel Prize in Chemistry for his contributions to the development of quantum chemistry. He also received the Nobel Peace Prize.
He proposed the establishment of a world peace research organization, calling not only for an end to nuclear weapons testing but also for an end to war itself, and he actively worked to gather like-minded people to support it.
For this achievement, he was awarded the Nobel Peace Prize in 1963.
He was a very humane scientist who hoped not only for the advancement of science but also for peace for mankind.


Quantum mechanics, which studies the motion of quantum particles that cannot be explained by classical mechanics.
Scientists who developed quantum mechanics, including Schrödinger and Heisenberg

To understand quantum chemistry, you must first understand quantum mechanics.
Quantum mechanics is the branch of physics that studies the behavior of quanta (the smallest indivisible unit of energy).
However, since classical mechanics cannot explain the motion of quantum particles, a new mechanics system became necessary.
From 1900 to 1930, physicists created the concept of quanta and created a new branch of physics called quantum mechanics.
And thus quantum mechanics was born.
The concept of quantum was first proposed by Planck in 1900.
In classical mechanics, Newtonian mechanics explains the motion of particles.
According to Newtonian mechanics, if you know the initial position and initial velocity of an object, you can find the position and velocity of an object at any time.
However, in the case of quantum mechanics, it was not possible to accurately measure both the position and momentum (mass multiplied by velocity) of an object simultaneously.


This is because when you try to accurately measure the position of an object, your measurement of its momentum becomes more inaccurate, and when you try to accurately measure the momentum of an object, your measurement of its position becomes more inaccurate.
In other words, the error in the position of an object and the error in the momentum of the object are inversely proportional to each other.
This is called the uncertainty principle, and was first proposed by Heisenberg in 1925.
Quantum mechanics developed after Planck proposed the concept of quantum, including Schrödinger's equation and Heisenberg's uncertainty principle.
Pauling introduced quantum mechanics to chemistry and pioneered a new field called quantum chemistry.
Quantum mechanics can create endless new fields of research, not just quantum chemistry.
Quantum mechanics will allow us to gain a deeper understanding of the fundamental structure of the universe and how it operates, which will contribute to illuminating the future of humanity.

Chemical bonding, where different substances combine to create new substances
Inside Lewis's chemical bonding theory paper!

Quantum chemistry is a field that is not easy for the general public to understand, but this book first introduces the history of chemical reactions and the history of organic chemistry to make it easier to understand.
Next, we introduced the theory of chemical bonding.
Chemical bonding is the joining of different substances to create new substances, and the first person to come up with the idea was Newton.
In 1704, Newton described in his book Opticks the process by which different elements combine to form new substances.
Later, in 1718, Geofroy created a table of chemical affinities that showed how much different elements wanted to combine.

The book also introduced Lewis's 1916 paper, which explained chemical bonding without using quantum mechanics at all.
This paper mainly explains covalent bonding, which we learn in high school chemistry class.
After electrons were discovered and it became known that they revolve around the nucleus, Lewis became interested in the outermost electrons among those orbiting the nucleus.
These electrons are called valence electrons, and they play a very important role in covalent bonding.
Lewis used the sharing of electrons to explain the bonding of two oxygen atoms to form an oxygen molecule.
Lewis's theory later greatly helped Pauling in pioneering quantum chemistry.

Lighter than a major textbook, heavier than a general textbook
If you are looking for a science book that is not superficial but rather in-depth!

Are you planning to pursue a science or engineering degree? Are you particularly interested in physics or chemistry? Are you looking for a book that delves into the history of science and provides in-depth explanations of theories? Here's the "Learn Science Through Original Papers by Nobel Prize Winners" series.
This is a book that literally teaches scientific theories through original papers written by Nobel Prize winners.
It explains in detail how scientists solve famous theories that are easily accessible through textbooks or other media in their papers, focusing on the main points.
Through one-on-one conversations with professors and physics or chemistry departments.
The history of science that forms the background is a bonus.
Other theories that form the basis for completing the theory are also explained.
It wasn't explained in just a few lines.
They say the language of science is mathematics.
In other words, it is difficult to properly understand the core of scientific theory without mathematics.
Don't worry too much.
Because it was explained in a way that anyone with only a high school level of math knowledge could understand.
And even if you skip the formulas, it's not difficult to accept the theory.
Even just understanding it vaguely makes me feel like it's mine.
After you've read everything, you can look back at it carefully.
Because books don't disappear anywhere!

To allow you to experience the feel of the thesis firsthand, it is included as an appendix at the back of the book.
Since the scientists' papers were written in other languages, including German and French, as well as English, we included the English version, which is relatively easy to read.
This series was specifically planned to consist of 20 volumes.
The main field is physics.
Each book covers the representative theories of physicists such as Einstein, Marie Curie, Planck, Bohr, and Heisenberg.
Usually, books that divide fields into this detail and group them into series with each volume covering a single topic are mostly aimed at children.
So the planning of this series is somewhat unique.
This is where the author's true value comes into play.
As a researcher who has published over 300 papers in international journals, an author of hundreds of textbooks, and a professor of physics at a university, the author's expertise has led to a fresh and innovative plan.
If you want to truly understand the theory, but find specialized textbooks too daunting, or general textbooks too shallow, why not try this series? Let's take a deeper dive into the world of science!