“All the science we have to learn is
It was in the textbook!”

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“Huh? I liked science?”
From Newton's laws of motion to quantum mechanics
Exciting science stories for educated adults

If movies and games were the subjects of the exam, would we be able to enjoy them as much as we do now? Science communicator Orbit, who made the entire nation laugh with the single topic of science on tvN's "You Quiz on the Block," has a new book out.
The purpose of this book is to give you back the 'real fun of science' that was stolen from you long ago.
What would science be like without tests or homework?

The reactions of those who saw the orbital footage were consistently explosive.
“Please give a 100-hour lecture,” “Please give a part 2 too,” “This is the first time I’ve waited so eagerly for a science talk,” are the testimonies of those who have discovered the fun of science.
It's your turn to reclaim the pure scientific curiosity you lost as a child.

This book is a re-written version of the EBS program "My Second Textbook: Science Edition," which reinterpreted "textbook knowledge" into "culture for adults."
The author of this book, Orbit, joined the science teacher team and carefully selected and packed only the contents that are still useful even as an adult among the complex scientific theories.
He said that he had put a lot of effort into the project of 'rewriting textbooks with a new perspective', which he had wanted to do for a long time, and added many examples so that many people could understand it.


'Newton's laws of motion', 'the periodic table', 'entropy', 'quantum mechanics', and even 'theory of relativity'.
There's no need to be intimidated by just looking at the words.
This is because it is filled with science stories that can be enjoyed as general knowledge, rather than formulas that must be memorized.

“Life is not about speed, but about direction.” This is a famous quote that everyone knows, and it is said to have been said by the German writer Goethe.
This is a frequently used phrase meaning that it is more important to go the right way than to achieve something quickly.
But it comes across as a bit embarrassing to me.
Because it is an expression that confuses ‘speed’ and ‘velocity.’
In everyday life, both words are used similarly to indicate speed, but in science, they are completely different concepts.

--- p.20

There are also amusement rides that utilize electromagnetic induction.
The Gyro Drop goes up to a high place and then falls quickly, but then suddenly and slowly comes down at the landing point (below).
The principle is this:
There is a magnet on the back of the seat where the person sits, and a metal plate one-third of the way up from the bottom of the pillar.
When a magnet comes near a metal plate, a current flows through the metal plate, and this current creates a magnetic force that repels the falling magnet.
Because of that force, even if you fall very fast, you can fall slowly at the landing point.

--- p.83

Humanity, who used to live in a world explained by Newton's laws of motion, now discovers a world of atoms and electrons that move in inexplicable ways.
A new physics was needed to explain the microscopic world, which could not be explained at all by the laws of the visible macroscopic world.
That's how 'quantum mechanics' came about.

--- p.100

According to the Copenhagen interpretation, the microcosm is governed by uncertainty and probability.
But Einstein could not accept that nature could be understood in terms of probability.
Perhaps it was the mindset of a scientist that he had to find a definitive answer.
So he left behind that famous saying.
“God does not play dice.”
But it is said that Niels Bohr coolly accepted that statement.
“Don’t tell God what to do.”
--- p.104

Mendeleev, who enjoyed playing card games, wrote down the names, masses, and properties of elements on paper and tried to group elements with similar characteristics as if playing a card game.
But this wasn't easy.
Time passed without finding an answer.
Then one day, Mendeleev had a dream while sleeping.
In my dream, I saw the periodic table, reflecting the regularities of the elements I'd been pondering! I copied it down as soon as I woke up, and this became the basic framework of the current periodic table.
How hard must you have thought about it for it to even appear in your dreams?
I guess you have to be this crazy to be able to achieve anything.

--- p.140

The process of forming a substance by sharing or exchanging electrons and combining two or more atoms to form a molecule with new properties is called 'chemical bonding'.
For example, oxygen burns other substances well, and hydrogen has the property of burning well.
When two things that burn well and burn well meet, they strangely turn into water.
When highly toxic sodium and chlorine meet, you might think something scary will come out, but surprisingly, salt is created.
The properties of a substance change depending on how they are combined.

--- p.150

I told you that the materials in the outer core rotate to create the Earth's magnetic field, and this Earth's magnetic field is a really important element for us.
There is solar wind in space.
From the sun, particles with enormous amounts of energy, charged particles (particles with an electrical charge), fly in all directions.
Solar wind is a type of radiation that is extremely harmful to the body, but the magnetic field blocks it.
You can see the aurora around the North and South Poles, which is proof that the magnetic field protects us.

--- p.266

People sometimes ask me if the Earth is really going to end, and my answer is always the same.
“The Earth will not be destroyed.
“Humanity will only perish.” To say that we must save the Earth is, in a way, an arrogant statement.
The Earth is just the Earth, it won't matter.
So, it is right that we should save humanity, not the Earth.
We must maintain the Earth as an environment suitable for human habitation.

--- p.274

As ocean temperatures rise due to global warming, the temperature difference between the warm ocean waters and the cold air above the atmosphere increases, making typhoons more energetic.
This means that there may be more damage from stronger typhoons.
When we talk about global warming, we often think of things like droughts and wildfires because it's a phenomenon that means it's getting hotter, but typhoons, heavy rain, and floods can also get worse.
The disaster is not concentrated in one direction, but rather polarized.

--- p.286