Seven Brief Lessons on Physics

by Carlo Rovelli

Overview

Instant New York Times Bestseller

“One of the year’s most entrancing books about science.”—The Wall Street Journal

“Clear, elegant...a whirlwind tour of some of the biggest ideas in physics.”—The New York Times Book Review
 
This playful, entertaining, and mind-bending introduction to modern physics briskly explains Einstein's general relativity, quantum mechanics, elementary particles, gravity, black holes, the complex architecture of the universe, and the role humans play in this weird and wonderful world. Carlo Rovelli, a renowned theoretical physicist, is a delightfully poetic and philosophical scientific guide. He takes us to the frontiers of our knowledge: to the most minute reaches of the fabric of space, back to the origins of the cosmos, and into the workings of our minds. The book celebrates the joy of discovery.  “Here, on the edge of what we know, in contact with the ocean of the unknown, shines the mystery and the beauty of the world,” Rovelli writes. “And it’s breathtaking.”

Product Details

ISBN-13:	9780399184437
Publisher:	Temple Publications International, Inc.
Publication date:	03/01/2016
Sold by:	Penguin Group
Format:	eBook
Pages:	96
Sales rank:	35,502
File size:	1 MB

About the Author

Carlo Rovelli, an Italian theoretical physicist, is the head of the quantum gravity group at the Centre de Physique Théorique of Aix-Marseille Université. He is one of the founders of the loop quantum gravity theory. Rovelli lives in Marseille, France.

Read an Excerpt

From the First Lesson: The Most Beautiful of Theories

In his youth Albert Einstein spent a year loafing aimlessly. You don’t get anywhere by not “wasting” time—something, unfortunately, that the parents of teenagers tend frequently to forget. He was in Pavia. He had joined his family, having abandoned his studies in Germany, unable to endure the rigors of his high school there. It was the beginning of the twentieth century, and in Italy the beginning of its industrial revolution. His father, an engineer, was installing the first electricitygenerating power plants in the Paduan plains. Albert was reading Kant and attending occasional lectures at the University of Pavia: for pleasure, without being registered there or having to think about exams. It is thus that serious scientists are made.

After this he registered at the University of Zurich and immersed himself in the study of physics. A few years later, in 1905, he sent three articles to the most prestigious scientific journal of the period, the Annalen der Physik. Each of these is worthy of a Nobel Prize. The first shows that atoms really exist. The second lays the first foundation for quantum mechanics, which I will discuss in the next lesson. The third presents his first theory of relativity (known today as “special relativity”), the theory that elucidates how time does not pass identically for everyone: two identical twins find that they are different in age if one of them has traveled at speed.

Einstein became a renowned scientist overnight and received offers of employment from various universities. But something disturbed him: despite its immediate acclaim, his theory of relativity does not fit with what we know about gravity, namely, with how things fall. He came to realize this when writing an article summarizing his theory and began to wonder if the law of “universal gravity” as formulated by the father of physics himself, Isaac Newton, was in need of revision in order to make it compatible with the new concept of relativity. He immersed himself in the problem. It would take ten years to resolve. Ten years of frenzied studies, attempts, errors, confusion, mistaken articles, brilliant ideas, misconceived ideas.

Finally, in November 1915, he committed to print an article giving the complete solution: a new theory of gravity, which he called “The General Theory of Relativity,” his masterpiece and the “most beautiful of theories,” according to the great Russian physicist Lev Landau.

There are absolute masterpieces that move us intensely: Mozart’s Requiem, Homer’s Odyssey, the Sistine Chapel, King Lear. To fully appreciate their brilliance may require a long apprenticeship, but the reward is sheer beauty—and not only this, but the opening of our eyes to a new perspective upon the world. Einstein’s jewel, the general theory of relativity, is a masterpiece of this order.