introduction

Part 1: The 5th Dimension
Chapter 1: A World Beyond Time and Space
Chapter 2: The Mathematician and the Magician
Chapter 3: The Man Who Saw the Fourth Dimension
Chapter 4: The Secret of Light: Vibrations in the Fifth Dimension

Part 2: Unification in the Tenth Dimension
Chapter 5 Quantum Theory
Chapter 6: Einstein's Revenge
Chapter 7: Superstring Theory
Chapter 8: A Signal from the Tenth Dimension
Chapter 9 Before Creation

Part 3: Wormholes - Doors to Other Universes
Chapter 10: Black Holes and Parallel Universes
Chapter 11: Building a Time Machine
Chapter 12: Colliding Universes

Part 4: The Ruler of Hyperspace
Chapter 13 Beyond the Future
Chapter 14: The Fate of the Universe
Chapter 15 Conclusion

Acknowledgements
Translator's Note
Huzhou
References and Further Reading
Search

A book that will revolutionize the way you see the world!
The most excellent guide to high-dimensional physics
A must-read for modern physics and a scientific classic that revolutionized our understanding.

Hyperspace, the first general science book written solely by world-renowned theoretical physicist and futurist Michio Kaku, has been published.
After its publication in 1994, it was selected as a 'Book of the Year' by the New York Times and the Washington Post, and announced the birth of a 'smart, sharp, humorous, and kind physicist.'
In 2016, it was included in the Oxford Landmark Science series, which selects only “essential readings in modern science, books that have changed the way we think,” proving that it is a true classic of modern science.
It was published in Korea by Kim Young-sa in 1997 and went out of print for a while, but was republished after 20 years due to reader requests.
The newly published "Hyperspace" was newly translated by Dr. Park Byeong-cheol, who has translated all of Michio Kaku's major works, including "Parallel Universe," "Nothing is Impossible," "Physics of the Future," and "The Future of the Mind," and the translator's notes and commentary faithfully supplement the content that has changed since the first edition was published.

Hyperspace is a general term for a space with a higher dimension than four-dimensional spacetime, and hyperspace theory is also called by other names such as 'Kaluza-Klein theory', 'supergravity theory', and 'superstring theory'.
This theory is a strong candidate for the 'Theory of Everything', the holy grail of physics that Einstein was obsessed with in his later years. Michio Kaku is convinced that if the hyperspace theory is correct, the scientific and philosophical concepts of the universe will undergo a revolutionary change, and he defines it as a modern-day 'scientific revolution'.
The author says that he wrote this book because there was no book that properly introduced the 'theory of high-dimensional space', which has such great significance.
As the author himself puts it, "Hyperspace" is "the first book to explain hyperspace theory in a rigorous and understandable way," and even now, 25 years after its publication, it is still considered "the best book on higher-dimensional physics."



Nature becomes simpler as it goes down to its fundamental level!
The unification of natural laws in higher-dimensional spacetime

All natural phenomena are described by four fundamental forces.
It is no exaggeration to say that scientists have been struggling to figure this out for nearly two thousand years.
1) Electromagnetic force - Electromagnetic force appears in various forms such as electricity, magnetism, and light.
2) Strong nuclear force (strong force) - The strong force provides energy to burning stars.
The sun was able to shine thanks to the force, so it can be said that humans ultimately came to exist thanks to the force.
3) Weak nuclear force (weak force) - The weak force is the force involved in all types of radioactive decay.
4) Gravity - Gravity is the force that holds planets, including Earth, in their orbits and maintains the shape of galaxies.
The greatest challenge in theoretical physics is to find a 'theory of everything' that unifies these four forces, and this was the problem that Einstein was preoccupied with in his later years.

Quantum mechanics, which emerged in the early 20th century, brought the microscopic world, which had been a forbidden realm for the past two thousand years, into the realm of research.
What is matter made of? What is the source of the force that holds matter together? Why does matter exist in such diverse forms? Quantum mechanics has easily solved these intricate questions that have plagued physicists for centuries.
Quantum mechanics continued to advance, giving rise to the Yang-Mills field theory, a theory that unifies the three forces excluding gravity.
Physicists even gave this theory a name: the 'Standard Model'.
But quantum mechanics couldn't capture gravity.
The interior of a black hole, the state of the universe just before or just after the Big Bang, etc. are areas where general relativity and quantum mechanics must be applied simultaneously, but the two theories were too different.
This is where hyperspace theory comes into play.

Superstring theory, another name for hyperspace theory, explains the properties of all elementary particles as 'vibrating strings'.
In many ways, it seemed like a good candidate for the grand unification theory and the theory of everything, but the problem was that the background dimension was 10 and there were five logically possible string theories.
The first edition of Hyperspace was published in 1994, at a time when the popularity of string theory was gradually waning due to its limitations.
However, in 1995, Edward Witten, a leading figure in string theory, announced M-theory, which unified five theories into one, and string theory entered its second revolution.
However, despite its prominence, string theory has not yet been able to calculate a single observable physical quantity.
If it is a normal physical theory, it should be possible to determine whether it is true or false by calculating physical quantities that can be verified through experiments.
So, is string theory a failed theory? It's still too early to draw a conclusion.
But whatever the conclusion, string theory raises fascinating questions and ideas related to physics, geometry, and topology, and it will likely serve as Newton's "shoulders of giants."



A hyperspace journey through history, art, religion, and philosophy, centered around science.
The Dimensional Revolution in Modern Physics Unraveled by Michio Kaku

Michio Kaku divided this book into four parts.
Part 1 explores the history of hyperspace, and Part 2 explores the possibility that hyperspace theory could become the theory of everything.
Part 3 explores the possibility of space being torn apart and explores interesting topics such as black holes, wormholes, parallel universes, time travel, and extraterrestrial life through hyperspace theory.
Finally, in Part 4, we explore when, if hyperspace theory is correct, we might be able to put it to use.
The Washington Post likened the book to a Tilt-A-Whirl, an amusement ride that spins and stops in unpredictable directions.
In addition to his own childhood and the backstories of famous scientists, he also names artists like Dali, Picasso, Dostoevsky, and Oscar Wilde, and draws on philosophers like Aristotle, Thomas Aquinas, and Kant.
In addition, dramas and movies such as [Star Wars], [Star Trek], [Back to the Future], and [Contact] frequently appear and discuss God.
Michio Kaku's narrative style, which moves freely between science, history, art, religion, and philosophy over four parts, leaves no room for readers to get bored.
When you come out of this ride-like book, you will literally see the world in a revolutionary way.