Seven Brief Lessons on Physics

Seven Brief Lessons on Physics

eBook - 2015
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Penguin Putnam
The New York Times bestseller from the author of The Order of Time and Reality Is Not What It Seems

“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.”

Baker & Taylor
A introduction to modern physics by a founder of the loop quantum gravity theory shares seven succinct lessons on topics ranging from general relativity and quantum mechanics to elementary particles and black holes. An international best-seller.

Publisher: UK :, Allen Lane,, 2015
ISBN: 9780399184437
Characteristics: 1 online resource (viii, 96 pages) : illustrations

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Dec 31, 2018


Reminds me of the best of Feynman's physics lectures.

Dec 27, 2018

Was interesting through out entire book

great intro to physics without having the need for much physics background

neyoscribbles Nov 16, 2018

The author has managed to explain the dense subject matter in a poetic and comprehensible manner. It took me longer to finish this ‘brief’ book because I had to re-read certain concepts. However, it was still fascinating because it almost narrowed it down to which theory I would like to delve into and provided a brief intro to various topics. The poetic, yet expository prose truly managed to tie everything together and somehow related the element of humanness to the stars and the trees. This book provided a much needed reminder of how far we’ve come, yet how everything we have uncovered so far is less than a tiny spec of spec.

Jul 29, 2018

This is a great read for those who are interested in learning of the world of physics. I was surprised that I was able to read this in the short amount of time that I did. But, it takes concentration to read.

Jun 18, 2018

Dr. Rovelli is a wonder. This was his first of three (so far) best-selling excursions into the ultimate realms of physics--written for readers with no particular scientific background. I was first hit with quantum mechanics as a college freshman in the early 1960s, and I struggled to understand this at-face nonsensical theory. In succeeding decades I've read book after book on the subject and only barely risen above my original level of bafflement. The morning after I read Seven Brief Lessons, the quantum interrelationships between gravity and light packets (quanta) suddenly seemed obvious. Coincidence? Likely not.

Jun 15, 2018

I felt that it was easy to follow and it gave a brief history and overview of the main branches of physics and the theories that they are based on. It helped me determine which one I would like to dive deeper into.

SFPL_danielay Aug 07, 2017

A wonderful short book on advanced concepts in physics. Not only does the author explain complicated physics in easy to understand (okay, relatively easy to understand) language but he gently prods the reader to think further about these concepts and what it means to be human. Highly recommended for everybody.

ArapahoeJane Jan 30, 2017

I always lamented not taking physics (though I did take kinesiology) so I thought this book would give me the basics. It wasn't what I expected but it did offer a (sort of) layman's look at physics on a grand scope. I expected to learn about gravity, energy, force, levers, torque, magnetism and the like. The topics addressed were much larger than that: the cosmos and its components.

I read it in bed just before turning out the light at night. I cannot recommend that timing. This book demands focus and real thought about amazing topics. I tackled a 10-page chapter a night and that was enough to put me out!

JCLMELODYK Oct 21, 2016

Short, wonderful essays that even Penny could understand. Great read!

Aug 13, 2016

A beautifully written review of the many advances in physics since the dawn of the twentieth century. Rovelli has the rare gift of being able to take complex systems and abstract logic, and explain them with an unexpected simplicity. Using metaphor, sketches and relatable examples, the author enables non-sciency folks to grasp such concepts as special relativity, quantum theory, thermodynamics and the human experience of time. A very short and satisfying read, I would love to have Rovelli explain more complicated subjects to me, like algorithms and the NFL wild card schedule. He makes physics interesting, entertaining and relevant to the layman. Recommended for anyone who enjoys well-written non-fiction and layman science books, like Freakonomics, or the works of Hawkings, Tyson and Kaku.

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Jun 16, 2016

The heat of black holes is a quantum effect upon an object, the black hole, which is gravitational in nature. It is the individual quanta of space, the elementary grains of space, the vibrating “molecules,” that heat the surface of black holes and generate black hole heat.
Nature is our home, and in nature we are at home. This strange, multicolored, and astonishing world that we explore— where space is granular, time does not exist, and things are nowhere— is not something that estranges us from our true selves, for this is only what our natural curiosity reveals to us about the place of our dwelling. About the stuff of which we ourselves are made. We are made of the same stardust of which all things are made, and when we are immersed in suffering or when we are experiencing intense joy, we are being nothing other than what we can’t help but be: a part of our world.

Jun 16, 2016

If we are special, we are only special in the way that everyone feels themselves to be, like every mother is for her child. Certainly not for the rest of nature.
Life on Earth gives only a small taste of what can happen in the universe. Our very soul itself is only one such small example.
All of our cousins are already extinct. What’s more, we do damage. The brutal climate and environmental changes that we have triggered are unlikely to spare us. For Earth they may turn out to be a small irrelevant blip, but I do not think that we will outlast them unscathed— especially since public and political opinion prefers to ignore the dangers that we are running, hiding our heads in the sand.
There are frontiers where we are learning, and our desire for knowledge burns. They are in the most minute reaches of the fabric of space, at the origins of the cosmos, in the nature of time, in the phenomenon of black holes, and in the workings of our own thought processes.

Jun 16, 2016

the difference in the passage of time is enormous, and what for the observer on the star would seem an extremely rapid bounce would appear, seen from outside it, to take place over a very long time. This is why we observe black holes remaining the same for long periods of time: a black hole is a rebounding star seen in extreme slow motion.
What we find is that when the universe is extremely compressed, quantum theory generates a repulsive force, with the result that the great explosion, or “big bang,” may have actually been a “big bounce.” Our world may have actually been born from a preceding universe that contracted under its own weight until it was squeezed into a tiny space before “bouncing” out and beginning...
The flow of time emerges thus from physics, but not in the context of an exact description of things as they are. It emerges, rather, in the context of statistics and of thermodynamics.

Jun 16, 2016

A university student attending lectures on general relativity in the morning and others on quantum mechanics in the afternoon might be forgiven for concluding that his professors are fools or have neglected to communicate with one another for at least a century. In the morning the world is curved space where everything is continuous; in the afternoon it is a flat space where quanta of energy leap.
It is not the first time that physics finds itself faced with two highly successful but apparently contradictory theories. The effort to synthesize has in the past been rewarded with great strides forward in our understanding of the world. Newton discovered universal gravity by combining Galileo’s parabolas with the ellipses of Kepler. Maxwell found the equations of electromagnetism by combining the theories of electricity and of magnetism. Einstein discovered relativity by way of resolving an apparent conflict between electromagnetism and mechanics.

Jun 16, 2016

Minuscule moving wavelets. They disappear and reappear according to the strange laws of quantum mechanics, where everything that exists is never stable and is nothing but a jump from one interaction to another.
It’s clear that there is something there, but we don’t know what. Nowadays it is called “dark matter.” Evidence indicates that it is something not described by the Standard Model; otherwise we would see it. Something other than atoms, neutrinos, or photons . . .
For now, this is what we know of matter: A handful of types of elementary particles, which vibrate and fluctuate constantly between existence and nonexistence and swarm in space, even when it seems that there is nothing there, combine together to infinity like the letters of a cosmic alphabet to tell the immense history of galaxies; of the innumerable stars; of sunlight; of mountains, woods, and fields of grain; of the smiling faces of the young at parties; and of the night sky studded with stars.

Jun 16, 2016

... general relativity is a compact gem: conceived by a single mind, that of Albert Einstein, it’s a simple and coherent vision of gravity, space, and time. Quantum mechanics, or “quantum theory,” on the other hand, has gained unequaled experimental success and led to applications that have transformed our everyday lives ...
Einstein's words on photon:
In accordance with the assumption to be considered here, the energy of a light ray spreading out from a point source is not continuously distributed over an increasing space but consists of a finite number of “energy quanta” which are localized at points in space, which move without dividing, and which can only be produced and absorbed as complete units.
Science begins with a vision. Scientific thought is fed by the capacity to “see” things differently than they have previously been seen.

Jun 16, 2016

the gravitational field is not diffused through space; the gravitational field is that space itself. This is the idea of the general theory of relativity. Newton’s “space,” through which things move, and the “gravitational field” are one and the same thing.
=== the magical richness of the theory opens up into a phantasmagorical succession of predictions that resemble the delirious ravings of a madman but have all turned out to be true.
Equation of the general theory of relativity (GTR) described by the curvature of space-time (ab are subs:)
Rab - ½ R gab = Tab
Murray Gell-Mann named “quarks,” inspired by a seemingly nonsensical word in a nonsensical phrase in James Joyce’s Finnegans Wake: “Three quarks for Muster Mark!”


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Aug 12, 2016

For Carlo Rovelli, a theoretical physicist, the thrill of discovering how the universe functions, does not fade. The first six chapters celebrate Rovelli's awe of the beauty of the laws of nature. In the seventh chapter, he explores the relationship between human nature and these natural laws. When we consider gravity, or the structure of the atom for example, we automatically think of what's going to happen. If we drop a ball, or react two chemicals together, the exact same thing is always going to happen. Predictability is a critical feature of nature's laws. How is it that humans are objects within the universe, and thus, subject to natural law, yet their behavior seems so unpredictable? Perhaps our conception of the predictability of human behavior is too narrow? Rovelli's final observation is that the human species seems inexorably bent on self-destruction. As he says, "The...climate and environmental changes that we have triggered are unlikely to spare us." Nevertheless, acknowledging the possibility of this outcome is not discouraging to Rovelli in the ending of the book.

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