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Mass: The quest to understand matter from Greek atoms to quantum fields

por Jim Baggott

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Everything around us is made of 'stuff', from planets, to books, to our own bodies. Whatever it is, we call it matter or material substance. It is solid; it has mass. But what is matter, exactly? We are taught in school that matter is not continuous, but discrete. As a few of the philosophers of ancient Greece once speculated, nearly two and a half thousand years ago, matter comes in 'lumps', and science has relentlessly peeled away successive layers of matter to reveal its ultimate constituents. "Albert Einstein once claimed that without belief in the inner harmony of our world, there could be no science. But modern science has revealed that the inner harmony of some of the simplest phenomena can be startlingly beautiful in its complexity. This is certainly true of matter, and its most commonplace property, mass. We have come a long way since the conjectures of the Greek atomists. We know for sure that atoms exist, and we also know that they're divisible. They consist of electrons, orbiting nuclei of protons and neutrons. We know that protons and neutrons are in turn composed of quarks. And we have found that elementary particles inside atoms behave like waves: mysterious phantoms of probability. We have identified several families of subatomic particles, and now recognize that 'empty' space fizzes with virtual particles. we think now of mass in terms of the energies of interactions. Elementary particles gain mass by interacting with the Higgs field, revealed by the discovery of the Higgs boson, but we still don't understand why some particles interact more strongly than others. As Jim Baggott explains in this absorbing account that takes us from atoms to quarks, gluons, and quantum chromodynamics, we have journeyed far, but we have yet to fully understand the fundamental nature of mass."--… (mais)
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“There is nothing new to be discovered in physics now, All that remains is more and more precise measurement.”

Lord Kelvin



Mass: The Quest to Understand Matter from Greek Atoms to Quantum Fields by Jim Baggot is an in-depth study of the “stuff” that surrounds us. Baggot is currently a freelance science writer. A graduate of Manchester with a degree in chemistry and a PhD in physical chemistry from Oxford, he was a lecturer at the University of Reading and is the author of several books on quantum physics and reality.

Three years ago I read Baggott’s Farewell to Reality which I found to be very informative and written at a level where the information was understandable and yet not dumbed down. The same formula is followed in Mass. There is a rising level of knowledge needed as this book progresses. Considering the timeline this book covers most of the information can be grasped by those with a moderate science background.

The idea of mass, matter, has evolved over the ages. It is all around us and yet we know so little about what it actually is. It is more than fire, earth, air, and water. The idea that atoms were indivisible has since passed and even the concept they are the smallest particles with it. Even the particles that make up the nucleus of atoms are made up of other particles. All that is solid around us is mostly empty space and empty space we find isn’t really empty.

Baggot starts off with the ancient Greeks and their developing understanding of the world around them. He works to put the reader in the mindset of the historical philosophers and scientists. We have the advantage of technology and a long history of experimentation. The Greeks were innovative and as wrong as they appear today, at the time it was advanced thinking.

Baggot takes the reader through the Newtonian period and into Einstein without much math or formulas. The history of discovery and ensuing problems, from the ancients to the present, is very well done. Determining what exactly mass is a long and developing problem. Science strives to find elegance and simplicity — f=m*a or e=mc^2. Still, Einstien simplified complex problems with thought experiments and Feynman use the diagrams that bear his name. Einstein also initially believed in a static universe and created a cosmological constant to balance his equations. The problem was the universe is not static, but his cosmological constant did help in the search for dark matter and energy which make up most of the universe. The harder we look the more we find. Schrodinger had his cat, but string theory is stuck with complex math and many dimensions. The study of mass has moved from observation to a point where observation interferes with the experiment. The more we discover. The more we have to learn and the more complex the science and math gets.

Mass is an interesting history and science book. It shows that every time we think we understand what makes up the universe we find another hidden layer and a more complex explanation. Baggot does not show us the next layer of physics to be discovered nor does he add to the explanation of the universe. He does do a very good job of explaining how we got to where we are.

Available August 1, 2017 ( )
  evil_cyclist | Mar 16, 2020 |
I liked the approach of this book. It is historical, but not purely so. It poses questions that one would actually like to address, and the history becomes a gradual addressing of these questions. Every chapter ends with a brief summary of the conclusions (possibly to be refuted in later chapters) reached in the chapter. The diagrams seem well drawn.
  themulhern | Nov 24, 2017 |
I’ve had the pleasure of reviewing some wonderful non-fiction books lately so it was pure happiness to add one of the science genre to that list especially one that flowed so eloquently as this. An added layer of surprise and joy was the field of philosophy woven through his scientific focus showing how the beauty in both act as complements rather than enemies.

During my educational years I loved science but too often the textbooks took the wonderment and breathtaking beauty out of the world so trying to follow along in class or do work at home was a level of tedium that should be easily found along Dante’s circles of Hell.

Baggott is now one of my heroes for creating something that sucks you in to the point that you will find yourself curling up late into the night to soak in the beautifully written journey through history as his words and phrases lend themselves well to the novice just as easily to one well versed in this field.

By the end you should have gained a greater appreciation for the evolution of scientific thought on what constitutes the foundation of our universe. ( )
  ttsheehan | Sep 20, 2017 |
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Everything around us is made of 'stuff', from planets, to books, to our own bodies. Whatever it is, we call it matter or material substance. It is solid; it has mass. But what is matter, exactly? We are taught in school that matter is not continuous, but discrete. As a few of the philosophers of ancient Greece once speculated, nearly two and a half thousand years ago, matter comes in 'lumps', and science has relentlessly peeled away successive layers of matter to reveal its ultimate constituents. "Albert Einstein once claimed that without belief in the inner harmony of our world, there could be no science. But modern science has revealed that the inner harmony of some of the simplest phenomena can be startlingly beautiful in its complexity. This is certainly true of matter, and its most commonplace property, mass. We have come a long way since the conjectures of the Greek atomists. We know for sure that atoms exist, and we also know that they're divisible. They consist of electrons, orbiting nuclei of protons and neutrons. We know that protons and neutrons are in turn composed of quarks. And we have found that elementary particles inside atoms behave like waves: mysterious phantoms of probability. We have identified several families of subatomic particles, and now recognize that 'empty' space fizzes with virtual particles. we think now of mass in terms of the energies of interactions. Elementary particles gain mass by interacting with the Higgs field, revealed by the discovery of the Higgs boson, but we still don't understand why some particles interact more strongly than others. As Jim Baggott explains in this absorbing account that takes us from atoms to quarks, gluons, and quantum chromodynamics, we have journeyed far, but we have yet to fully understand the fundamental nature of mass."--

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