Explaining the Universe: The New Age of PhysicsPrinceton University Press, 2002 - 226 Seiten In this fascinating book, John Charap offers a panoramic view of the physicist's world as the twenty-first century opens--a view that is entirely different from the one that greeted the twentieth century. We have learned that the universe is billions of galaxies larger than we imagined--and billions of years older. We know more about how it came to be and what it is. Because of physics, we live in a world of greater danger and more convenience, smaller particles and bigger ideas. Charap introduces these ideas but spares us the math behind them. After a review of the twentieth century's thorough transformation of physics, he checks in on the latest findings from particle physics, astrophysics, chaos theory, and cosmology. His tour includes ongoing efforts to find the universe's missing matter and to account for the first moments after the big bang. Taking readers right to the field's speculative edge, he explains how superstring theory may finally unite quantum mechanics with general relativity to produce a consistent quantum theory of gravity. Along the way, Charap poses the questions that continue to inspire research. Why is the universe flat? Why can't we forecast weather better? Can Schrodinger's cat really be simultaneously dead and alive? Why does fractal geometry keep showing up in strange places? Might spacetime have eleven dimensions? What does quantum mechanics mean about the nature of our world? In this book's pages, the nonphysicist will accept as commonsensical Heisenberg's uncertainty principle, and physicists can meet across specialties. Students can access physics' critical concepts, and poets can learn a new language to describe the universe's many wonders. Taking us from the ultraviolet catastrophe that undid the Newtonian world to tomorrow's Theory of Everything, Charap brings today's most fascinating science down to Earth, where we can all enjoy it. |
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... understanding of the physical universe , and of the challenges those advances have them- selves opened up . All the claims of science are tentative ; therein lies their strength . For they are not based on unquestioned dogma , which ...
... understanding would have to be abandoned and negated . Newtonian physics has been superseded , but one can still recover it from relativistic quantum physics as an excellent approximation of how the world works , and it still provides a ...
... understanding of the natural world . The pace of discovery and its exploitation is exhilarating and relentless . For all the dangers which sometimes cloud these advances , I find them over- whelmingly positive and enriching . Think of ...
... understanding the origin and overall structure of the universe are still being explored . And there are still mysteries to be unrav- eled in the very foundations of quantum mechanics itself . We know well how to use quantum mechanics ...
... understanding of that most familiar of the forces of nature , the force of gravity . The marriage of quantum mechanics with rela- tivity theory required heroic efforts , and even now the full integration of quantum mechanics with the ...
Inhalt
PHYSICS 1900 | xiv |
HEAVENS ABOVE | 22 |
CHANCE AND CERTAINTY | 41 |
ORDER OUT OF CHAOS | 62 |
YOUR PLACE OR MINE | 75 |
MANY HISTORIES MANY FUTURES | 84 |
MICROCOSM | 98 |
WEIGHTY MATTERS | 117 |
IN THE BEGINNING | 149 |
DOWN TO EARTH | 170 |
EPILOGUE | 186 |
Notes | 193 |
Glossary | 207 |
Suggestions for Further Reading | 213 |
Index of Names | 217 |
221 | |