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The World You See as Much as You Know: Physics
The World You See as Much as You Know: Physics
Description
Book Introduction
Diamonds floating in the air?
Why doesn't a bridge without pillars collapse?
“Physics provides clear answers to everyday questions!”
Appearance on tvN's [Unexpected Adult] and [My Library Reading to You]
Recommended by Kim Beom-jun, author of the bestselling books "The Physics of Worldly Affairs" and "The Science of Relationships"!


When I see water droplets flowing down the surface of an umbrella on a rainy day, this question suddenly comes to mind.
"Why don't umbrellas get wet in the rain? And come to think of it, why aren't water droplets triangular?" Looking up at the dark night sky, I sometimes find myself wondering these things.
'The universe is as black as night, but why is the daytime sky blue?' In fact, the principles of physics are abundant in our daily lives.
There are principles of physics in the way leaves flutter and fall, in the way water droplets roll around on leaves, and in the way light allows us to see all the colors of the world.

The dictionary definition of physics is 'the study of the physical properties of matter, all phenomena they exhibit, and the relationships and laws between them' (quoted from the Standard Korean Dictionary).
That's why knowing physics can help you develop a broader and deeper perspective on the world.
Yasufumi Kawamura, a professor of physics at Tokyo University of Science who planned this book, also says in his introduction that physics has changed our lives and has played a major role in predicting the future.
Therefore, he expressed the opinion that understanding physics is directly related to changing human life in the future.

In 『The World You See as Much as You Know: Physics』, 81 curiosities about natural phenomena and everyday life are selected based on the seven keywords of light, water, air, heat, earth, space, and life.
It covers everything from everyday questions like, "Why are sunsets red?" to questions we never knew existed, like, "Does air have weight?" to questions about the unknown world, like, "How old is the universe?" and their answers.

Of course, many people will think that physics is difficult and boring.
However, this book has carefully selected easy and fun questions that everyone has wondered about and wanted to know at least once in their childhood or daily life.
If you are tired of physics books that are difficult to understand, if you are not interested in physics but have ever wondered how certain phenomena occur while observing nature, or if you have ever wanted to read a science book if it wasn't boring, I highly recommend you read this book.
This book, which contains fundamental principles of the world that we sometimes overlook as obvious, and sometimes wonder about but fail to properly understand, will take you on an easy and fun journey from "?" to "!"

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index
Reviewed by Kim Beom-jun (Professor of Physics, Sungkyunkwan University)
Introduction

CHAPTER 1.
Science begins with curiosity before our eyes _ Light


Why are sunsets red? · Light scattering
Clouds aren't white? · Scattering of light
Seawater is clear, so why is the ocean blue? · Reflection and scattering of light
There are times when the color of the sky changes from moment to moment · Reflection and scattering of light
Why the Sea Is Blue Even in Dark Caves: Reflection and Scattering of Light
There's a lake that reflects like a mirror? · Reflection of light
Why lighthouse lights travel so far · The straight path of light
Why rainbows can only be seen after rain · Decomposition of light
The True Nature of the Fantastic Mirage: The Refraction of Light and the Mirage
Why the Omega Sun Appears · The Refraction of Light and the Mirage Below
Seeing water on dry land? · Refraction of light and the mirage below

CHAPTER 2.
The world created by the softest yet strongest force - water


Waves are created by 'this' · Storms and waves
How do giant icebergs float on the ocean? · Buoyancy
The Secret of Ice's Rising Path: Ice Expansion and Contraction
How are the ice trees on winter mountains formed? · Supercooling
The identity of what shines like a diamond in the air · Sublimation
The Secret Behind Beautiful Snow Crystals: Hydrogen Bonds
Why is the surface of ice slippery? · Water barrier
Rivers carved valleys? · Erosion and transport
How much energy does Niagara Falls have? Potential energy and kinetic energy
Why don't water droplets have triangles or squares? · Surface tension
Changes in the human body caused by water pressure · Henry's Law
What is the identity of the contrail that resembles a tail? · Saturated water vapor content
How do sharks get so fast? · Riblet structure

CHAPTER 3.
A world full of invisible forces _ Air


The only reason airplanes can fly is lift.
Why does a kite fly higher the more you pull it? · Balance of Forces
Air has weight? · Atmospheric pressure
Even brewing delicious coffee involves the secrets of physics: pressure changes.
Why are the noses of high-speed trains so pointed? · Air resistance
How do helicopters fly? Lift, action, and reaction.
Typhoons only move to the right? · Coriolis force
The Secrets of Menacing Tornadoes: Updrafts and Downdrafts
Why Leaves Flap · Air Resistance
Why does white smoke from chimneys disappear so quickly? · Condensation of water vapor
Why funnel clouds form when an airplane flies · Condensation of water vapor
Cloud formation occurs in just three stages: condensation and adiabatic expansion.
Read more · · · 10 representative cloud shapes

CHAPTER 4.
The world created by the most thrilling and powerful force _ Ten


How are beautiful auroras created? · Magnetic fields and plasma
The principle of converting sunlight into electricity · Conversion of light energy
The principle of converting wind power into electricity · electromagnetic induction
The principle of converting the power of water into electricity · Conversion of potential energy
Why does vinyl wrap stick so much? · Van der Waals forces
Sunlight isn't just light? · Electromagnetic waves
Why doesn't seawater get as hot as the sand on the beach? · Specific heat
Can you fly with just heat? · Thermal energy and gas density
100 million volts of lightning and static electricity across the sky
The principle of GPS, which transmits information from space. Radio waves
How are beautiful diamonds made? · Temperature and pressure
Read more · · · Various gemstones

CHAPTER 5.
A world full of mysterious secrets of life _ Earth


How far away are stars? · Parallax
If you go 'here', your weight will be 1/6th? · Universal gravity
Why Doesn't the International Space Station (ISS) Fall? · Motion of a Horizontally Thrown Object
Why Fossils Provide Clues to the Ancient Earth · Pressure and Fossilization
A Crack in the Earth? · Mantle Convection
The identity of hot, red-hot magma, mantle, and pressure
Since when has the Earth been constantly rotating? · Inertia
Is the moon the reason for the tides? · Gravity and centrifugal force
Is the moon round even when it's a crescent? · The Moon's Orbit

CHAPTER 6.
An unknown world full of fantastic mysteries _ Space


The nature of meteors falling from the night sky: frictional heat and adiabatic compression
Black holes in space, black holes, supernova explosions
Where is Earth in the vast universe? · Our galaxy
How old is the universe? · Big Bang
The Secret of Strawberry Moon: Reflections of Light
The largest moon, supermoon, perigee
How fast is a spaceship? · Speed
A fantastic meeting of the sun and moon: a solar eclipse
How do craters form? · Impact energy and kinetic energy
The Secrets of Physics: Action and Reaction to Launch a Rocket into Space
Is there a particle that holds the secret to the birth of the universe? · Neutrino

CHAPTER 7.
Gifts of Science to Us _ Life


Why do fireworks sound a beat late? · Speed ​​of Sound
The Secret of Arched Bridges That Don't Collapse Even Without Pillars: Action and Reaction
Principle of cable-stayed bridge supported by multiple cables · Tensile force
The Secret of a Giant Bridge Supported by Two Cables: A Synthesis of Tensile and Power
Why don't you fall off a roller coaster even if it flips upside down? · Centrifugal force and gravity
The Physical Secrets of a Ski Jumper's Safe Landing: Impact and Coefficient of Restitution
The physics secret to riding a swing well: the principle of resonance
A candle isn't just a wick burning? · Capillary action
The Secret of Light Bulbs and LEDs That Create Beautiful Nightscapes · Incandescence, the Diffusion of Semiconductors? Electronics
How many kilometers ahead can you see on the horizon? · Pythagorean theorem
Why bullets fly straight without bending: The gyroscopic effect
How do catapults hurl stones far? · The principle of the lever
Even if you don't have any strength, you can lift anything with just 'this'? · Fixed and movable pulleys
A Peek into the Invisible Microscopic World: Electron Transmission and Reflection

References

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Into the book
Liquids can change shape freely, but they have a tendency to clump together to some extent.
This is because the molecules of each substance have 'intermolecular forces' that attract each other.
In a substance that moves like a fluid, the intermolecular forces act in a direction that tries to make the surface area as small as possible. This force is called interfacial tension.
When it is a liquid, it is called surface tension.
Water has the highest surface tension among liquids.
The leaves have a rough surface and repel water, and the surface tension causes the water droplets to become round.
Let's think about water droplets on a lotus leaf.
There are many fine protrusions on the surface of the lotus leaf, so water droplets on the lotus leaf float on the protrusions.
This causes the surface tension to increase as the area in contact with the surface becomes very small.
Also, because the contact angle between the protrusion and the water droplet is large, the surface tension creates a round water droplet.
---From "Why aren't there triangles or squares in water droplets?"

Airplanes can fly thanks to the lift their wings generate.
If you look at the cross section of a wing, the top is usually convex and the bottom is relatively flat.
As the airplane moves forward, the air hitting the leading edge of the wing splits and flows over the top and bottom of the wing.
At this time, the air passing over the top of the wing has a relatively long path, so the air speed increases.
Then, the air density (pressure) is lower on the top of the wing where the air is moving faster than on the bottom where the air is moving slower.
Since force acts from a place of high pressure to a place of low pressure, the force acts from below, where the air density is high (the pressure is high), toward the top of the wing, i.e. from below, trying to lift the wing.
This force is called yang force.
Lift increases as the surface area of ​​the wing increases and the speed of the air hitting the wing increases.
In other words, the lift generated by the shape of the wing creating a difference in air pressure is what makes the airplane fly.
---From "The Only Reason an Airplane Can Fly"

Arched stone bridges may look unstable without any support, but they do not collapse easily.
If you look at each stone that makes up the bridge, you will see that the cross-section is trapezoidal.
This is the key.
The stone tends to fall down due to gravity (weight), but since the stones on either side are also trapezoidal, the force of the fall is distributed.
That is, gravity is broken down into a force that pushes the stones on either side.
A stone supports its own weight by pushing (action) and pushing (reaction) against the stones next to it.
Each stone pushes against the stones next to it, and ultimately the ground at each end supports the bridge.
---From "The Secret of the Arch Bridge That Doesn't Collapse Even Without Pillars"

Publisher's Review
A student who has become a burden, a parent who is at a loss because of their child's strange questions...
If this sounds like my story!


When you hear the word "science," especially "physics," what comes to mind? For many, the first thing that comes to mind is negative imagery: "boring," "complicated formulas," "difficult to understand."
But what if this mindset is a bias born from learning physics to solve "exam problems" from a "textbook"? It turns out that it wasn't "physics" that made me a "student," but rather "the exam."

The world's easiest physics book, responsible for everyone's scientific knowledge.

British biologist Thomas Huxley once said, “Science is nothing more than common sense, neatly organized, and the difference between science and common sense is the difference between a veteran and a novice.”
As he says, the physics of nature and everyday life that surrounds us is actually not that difficult.
Let's say we're walking down the street and we come across a yellow outfit that we really like.
Here, it is different from just thinking 'yellow is pretty' and passing it by, 'yellow is pretty.
But it's different to think again, 'How does that dress look yellow?'
It is precisely in this ‘but’ that scientific thinking is embedded.

The principle of 'reflection of light' is hidden in seeing all the colors in the world.
If you find this principle difficult, please read the following story carefully.
In fact, everyone knows that sunlight is made up of various colors such as red, orange, yellow, etc. through a rainbow.
Yellow clothing is simply the result of reflecting only yellow light from the sunlight and absorbing all other colors of light.
Once you know these physical facts, it's not that difficult.

Light, water, air, heat, earth, space, life
Almost all of the world's science, seen through 7 keywords!


In this book, I divided the questions about nature and daily life that I can easily encounter around me into seven keywords.
The first is a physics story about light, titled 'Science begins with curiosity before your eyes.'
It provides an easy explanation of the reflection, scattering, decomposition, and refraction of light that enable our eyes to distinguish colors.
The second, 'The World Created by the Softest but Strongest Force', is a physics story about water.
It describes the soft texture of water, the sparkling, shining ice, and the power to carve away mountains.

The third, 'A World Full of Invisible Forces', is a physics story about air.
It explains everything from why large, heavy airplanes and helicopters can fly so high in the sky, to the three simple steps that create clouds, and even the physics secrets you can use to brew delicious coffee.
The fourth, 'The World Created by the Most Thrilling and Powerful Force', is a physics story related to heat.
It also includes physics related to electricity.
It explains the core of fascinating phenomena such as how the aurora, which everyone finds beautiful, is formed, why lightning strikes, and how diamonds are made.

The fifth, 'A World Full of Mysterious Secrets of Life', deals with Earth, and the sixth, 'An Unknown World Full of Fantastic Mysteries', deals with the physics of the universe.
It covers everything from how far the Earth is from the stars to the Earth's location in space and even the physics of launching a rocket into space.
Lastly, 'Gifts that Science Has Given Us' contains physics encountered in everyday life.
It explains in detail why the sound of fireworks exploding is heard a beat later, how giant bridges supported by thin cables work, and even the physics secrets of swinging well.

The first step toward a world yet to be seen

Isaac Asimov, the legendary science fiction writer, once said, “The most exciting expression to announce a new discovery in science is not ‘Eureka!’ but ‘That’s interesting!’”
Forget the physics we've always held! The true joy of physics lies in the thrills of a 360-degree roller coaster at an amusement park, and in phenomena that are both novel and familiar, like the sea parting like Moses's dam.

Through this book, I hope you will find answers to the questions everyone has wondered about at least once as a child, experience the satisfaction of providing clear explanations to curious children, and discover that physics can be so easy and fun.
GOODS SPECIFICS
- Date of issue: February 27, 2023
- Page count, weight, size: 248 pages | 418g | 140*210*15mm
- ISBN13: 9791192300504
- ISBN10: 1192300505

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