Nuclear Physics in The Books Store

Superstring theory has been called "a part of 21st-century physics that fell by chance into the 20th century." In other words, it isn't all worked out yet. Despite the uncertainties--"string theorists work to find approximate solutions to approximate equations"--Greene gives a tour of string theory solid enough to satisfy the scientifically literate.

By the time the story reaches Oppenheimer's fateful Manhattan Project work, readers have been swept along much as the project's young physicists were by fate and enormous pressure. The authors allow the scientists to speak for themselves about their reactions to the Hiroshima and Nagasaki bombings, avoiding any sort of preacherly tone while revealing the utter, horrible ambiguity of the situation. For instance, Oppenheimer wrote in a letter to a friend, "The thing had to be done," then, "Circumstances are heavy with misgiving."

Many biographies of Oppenheimer end here, with the seeds of his later pacifism sown and the dangers of mixing science with politics clearly outlined. But Bird and Sherwin devote the second half of this hefty book to what happened to Oppenheimer after the bomb. For a short time, he was lionized as the ultimate patriot by a victorious nation, but things soured as the Cold War crept forward and anti-communist witchhunts focused paranoia and anti-Semitism onto Oppenheimer, destroying his career and disillusioning him about his life's work. Devastated by the atom bomb's legacy of fear, he became a vocal and passionate opponent of the Strangelovian madness that gripped the world because of the weapons he helped develop.

"Most of us were taught that the goal of science is power over nature, as if science and power were one thing and nature quite another. Niels Bohr observed to the contrary that the more modest but relentless goal of science is, in his words, 'the gradual removal of prejudice.' By 'prejudice,' Bohr meant belief unsupported by evidence."
--Pulitzer Prize-winner Richard Rhodes, author of the introduction to Power to Save the World: The Truth About Nuclear Energy by Gwyneth Cravens

"Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less."
--Marie Curie

My book is fundamentally about prejudice based on wrong information.

I used to oppose nuclear power, even though the Sierra Club supported it. By the mid-1970s the Sierra Club turned against nuclear power too. However, as we witness the catastrophic consequences of accelerated global temperature increase, prominent environmentalists as well as skeptics like me have started taking a fresh look at nuclear energy. A large percentage of the heat-trapping greenhouse gases, especially carbon dioxide, that thaw Arctic ice and glaciers comes from making electricity, and we rely upon it every second of our lives.

There are three ways to provide large-scale electricity—the kind that reliably meets the demands of our civilization around the clock. In the United States:

• 75% of that baseload electricity comes from power plants that burn fossil fuels, mainly coal, and emit carbon dioxide. Toxic waste from coal-fired plants kills 24,000 Americans annually.
• 5% comes from hydroelectric plants.
• Less than 1% comes from wind and solar power.
• 20% comes from nuclear plants that use low-enriched uranium as fuel, burn nothing, and emit virtually no CO2. In 50 years of operation, they have caused no deaths to the public.

When I began my research eight years ago, I'd assumed that we had many choices in the way we made electricity. But we don't. Nuclear power is the only large-scale, environmentally-benign, time-tested technology currently available to provide clean electricity. Wind and solar power have a role to play, but since they’re diffuse and intermittent, they can't provide baseload, and they always require some form of backup--usually from burning fossil fuels, which have a huge impact on public health.

My tour of the nuclear world began with a chance question I asked of Dr. D. Richard ("Rip") Anderson. He and his wife Marcia Fernández work tirelessly to preserve open land, clean air, and the aquifer in the Rio Grande Valley. Rip, a skeptically-minded chemist, oceanographer, and expert on nuclear environmental health and safety, told me that the historical record shows that nuclear power is cleaner, safer, and more environmentally friendly than any other form of large-scale electricity production. I was surprised to learn that:

• Nuclear power emits no gases because it does not burn anything; it provides 73% of America's clean-air electricity generation, using fuel that is tiny in volume but steadily provides an immense amount of energy.
• Uranium is more energy-dense than any other fuel. If you got all of your electricity for your lifetime solely from nuclear power, your share of the waste would fit in a single soda can. If you got all your electricity from coal, your share would come to 146 tons: 69 tons of solid waste that would fit into six rail cars and 77 tons of carbon dioxide that would contribute to accelerated global warming.
• A person living within 50 miles of a nuclear plant receives less radiation from it in a year than you get from eating one banana. Someone working in the U.S. Capitol Building is exposed to more radioactivity than a uranium miner.
• Spent nuclear fuel is always shielded and isolated from the public. Annual waste from one typical reactor could fit in the bed of a standard pickup. The retired fuel from 50 years of U.S. reactor operation could fit in a single football field; it amounts to 77,000 tons. A large coal-fired plant produces ten times as much solid waste in one day, much of it hazardous to health. We discard 179,000 tons of batteries annually--they contain toxic heavy metals.
• Nuclear power's carbon dioxide emissions throughout its life-cycle and while producing electricity are about the same as those of wind power.
• Nuclear plants offer a clean alternative to fossil-fuel plants. In the U.S. 104 nuclear reactors annually prevent emissions of 682 million tons of CO2. Worldwide, over 400 power reactors reduce CO2 emissions by 2 billion metric tons a year.

I wanted to know if what Rip was telling me was true. He took me on a tour of the nuclear world so that I could learn firsthand its risks and benefits. I visited many facilities, talked to many scientists in different disciplines, and researched the conclusions of the National Academy of Sciences and various international scientific bodies. As I learned more, I became persuaded that the safety culture that prevails at U.S. nuclear plants and the laws of physics make them a safe and important tool for addressing global warming. Clearly many of my beliefs had originated in misinformation and fear-mongering.

I've now met many people dedicated to saving the environment while supporting nuclear power as well as other green resources. This path is only logical. Nuclear power is the only large-scale, non-greenhouse-gas emitting electricity source that can be considerably expanded while maintaining only a small environmental footprint. If as a society we're going to reduce those emissions, we'll need every resource to do so, and we'll have to set aside our ideological blinkers, look at the facts, and unite to meet the greatest challenge humanity has ever faced.

The power to change our world does not lie in rocks, rivers, wind, or sunlight. It lies within each of us.

--Gwyneth Cravens

The universe has many secrets. It may hide additional dimensions of space other than the familier three we recognize. There might even be another universe adjacent to ours, invisible and unattainable . . . for now.

Warped Passages is a brilliantly readable and altogether exhilarating journey that tracks the arc of discovery from early twentieth-century physics to the razor's edge of modern scientific theory. One of the world's leading theoretical physicists, Lisa Randall provides astonishing scientific possibilities that, until recently, were restricted to the realm of science fiction. Unraveling the twisted threads of the most current debates on relativity, quantum mechanics, and gravity, she explores some of the most fundamental questions posed by Nature—taking us into the warped, hidden dimensions underpinning the universe we live in, demystifying the science of the myriad worlds that may exist just beyond our own.

Celebrated for his brilliantly quirky insights into the physical world, Nobel laureate Richard Feynman also possessed an extraordinary talent for explaining difficult concepts to the general public. Here Feynman provides a classic and definitive introduction to QED (namely quantum electrodynamics), that part of quantum field theory describing the interactions of light with charged particles. Using everyday language, spatial concepts, visualizations, and his renowned "Feynman diagrams" instead of advanced mathematics, Feynman clearly and humorously communicates both the substance and spirit of QED to the layperson. A. Zee's new introduction places both Feynman's book and his seminal contribution to QED in historical context and further highlights Feynman's uniquely appealing and illuminating style.

• Revised edition of a well-established text on elementary particle physics
• With a number of worked examples and many end-of-chapter problems
• Helps the student to master the Feynman rules
• Solution manual available for instructors

UNRAVEL the mystery of STRING THEORY

Trying to understand string theory but ending up with your brain in knots? Here's your lifeline! This straightforward guide explains the fundamental principles behind this cutting-edge concept.

String Theory Demystified elucidates the goal of the theory--to combine general relativity and quantum theory into a single, unified framework. You'll learn about classical strings, conformal field theory, quantization, compactification, and T duality. The book covers supersymmetry and superstrings, D-branes, the holographic principle, and cosmology. Hundreds of examples and illustrations make it easy to understand the material, and end-of-chapter quizzes and a final exam help reinforce learning.

This fast and easy guide offers:

• Numerous figures to illustrate key concepts
• Sample problems with worked solutions
• Coverage of equations of motion, the energy-momentum tensor, and conserved currents
• A discussion of the Randall-Sundrum model
• A time-saving approach to performing better on an exam or at work

Simple enough for a beginner, but challenging enough for an advanced student, String Theory Demystified is your key to comprehending this theory of everything.