Visar resultat för..."QED"

In QED: The Strange Theory of Light and Matter Richard P. Feynman explains, in his lucid and witty style, the revolutionary scientific theory that won him the Nobel Prize.Quantum electrodynamics - or QED for short - is the theory that explains how light and electrons interact, and in doing so illuminates the deepest and most complex mysteries of the world around us. Thanks to Richard Feynman and his colleagues, who won the Nobel Prize for their groundbreaking work in this area, it is also one of the rare parts of physics that is known for sure - a theory that has stood the test of time. In these entertaining lectures Feynman uses clear everyday examples to provide the definitive introduction to QED.'The perfect example of scientific genius'Independent'If you don't believe Nature is absurd, let chatty Professor Feynman convince you in his series of exceedingly reader-friendly lectures ... Full of witty one-liners, with its learning lightly worn, it's a book to enlighten'Mail on Sunday'Does a marvelous job of explaining one of twentieth-century physics' few unqualified triumphs'The New York Times Richard P. Feynman (1918-1988) was one of this century's most brilliant theoretical physicists and original thinkers. Feynman's other books, also available in Penguin, include QED, Six Easy Pieces, Six Not-so-Easy Pieces, Don't You Have Time to Think, The Pleasure of Finding Things Out, What Do You Care What Other People Think? and The Meaning of it All.

In the 1930s, physics was in a crisis. There appeared to be no way to reconcile the new theory of quantum mechanics with Einstein's theory of relativity. Several approaches had been tried and had failed. In the post-World War II period, four eminent physicists rose to the challenge and developed a calculable version of quantum electrodynamics (QED), probably the most successful theory in physics. This formulation of QED was pioneered by Freeman Dyson, Richard Feynman, Julian Schwinger, and Sin-Itiro Tomonaga, three of whom won the Nobel Prize for their work. In this book, physicist and historian Silvan Schweber tells the story of these four physicists, blending discussions of their scientific work with fascinating biographical sketches. Setting the achievements of these four men in context, Schweber begins with an account of the early work done by physicists such as Dirac and Jordan, and describes the gathering of eminent theorists at Shelter Island in 1947, the meeting that heralded the new era of QED.The rest of his narrative comprises individual biographies of the four physicists, discussions of their major contributions, and the story of the scientific community in which they worked. Throughout, Schweber draws on his technical expertise to offer a lively and lucid explanation of how this theory was finally established as the appropriate way to describe the atomic and subatomic realms.

Gertrude Stein began the creative work that was to earn her the reputation as one of the most original writers of this century with the three pieces in this volume. Fernhurst, a fictional episode based on a Bryn Mawr scandal of the early 1900s, explores the labyrinth of love between man and woman and between woman and woman; Q.E.D. fictionalizes an early Stein romance (doomed finally by a rival); and the third selection is an early draft of The Making of Americans, which records Stein's struggle toward maturity as woman and artist. Essential works of a significant twentieth-century literary voice.

QED is a seductive mix of science, human affections, moral courage and comic eccentricity... not to be missed.“– John Simon, New York MagazineThe play itself is a kind of proof, dramatically illustrating how a man who happens to be a genius elegantly and movingly works through the human problem of how to face the end of his life.” – Nancy Franklin, The New YorkerWith a moving and powerful introduction from Alan Alda.Who knew that quantum electrodynamics could make for a dramatic read? In the hands of the late, great physicist Richard Feynman, it does. Feynman's theory of QED is just one of the many topics the playwright Peter Parnell explores in this nearly-one-man show, a recent Broadway triumph for star Alan Alda as Feynman.Set in Feynman's office on the weekend of his realization that he has terminal cancer, this play is an intellectual tour-de-force that captures the unique, hilarious, and puckish genius that Feynman was. From his work on the Manhattan Project to the death of his beloved first wife, from his mission to reconstruct the Challenger space shuttle tragedy to his Nobel-prize winning physics ideas, the resume of Feynman's life is fascinating. But Parnell gives us more, letting fill in the details of his life. When he reads a letter he wrote to his wife after her death, or flirts with a student, or chillingly recalls walking around Manhattan calculating the damage an atomic bomb could do, we, grow to love the man behind the scientist. And we read in fascination as he puzzles out the problem of his own death.Combining the current interest in science and math in the entertainment world with one of the most entertaining scientists in U.S. history, QED is a tour-de-force.

Which famous proof did Archimedes inscribe on his tombstone? How and why do knots make perfect pentagons? Have you ever seen a proof so completely that it is just obvious? In this delicious little book, top down-under mathemagician Dr. Polster presents many of the most visually intuitive and exciting proofs from the dusty annuals of mathematical history. You can test your ability to follow the logic, leap into mathemagnosis and experience eureka-moment after eureka-moment. This is the first UK edition of this original classic from Wooden Books, highly successful in the US. WOODEN BOOKS are small but packed with information. "Fascinating" FINANCIAL TIMES. "Beautiful" LONDON REVIEW OF BOOKS. "Rich and Artful" THE LANCET. "Genuinely mind-expanding" FORTEAN TIMES. "Excellent" NEW SCIENTIST. "Stunning" NEW YORK TIMES. Small books, big ideas.

Quality Electronic Design (QED)’s landscape spans a vast region where territories of many participating disciplines and technologies overlap.

Quality Electronic Design (QED)’s landscape spans a vast region where territories of many participating disciplines and technologies overlap.

It presents different calculation schemes for the evaluation of the dispersion potential and also discusses energy shifts involving electric quadrupole and octupole moments, along with discriminatory dispersion potentials.

This thesis combines quantum electrical engineering with electron spin resonance, with an emphasis on unraveling emerging collective spin phenomena. The presented experiments, with first demonstrations of the cavity protection effect, spectral hole burning and bistability in microwave photonics, cover new ground in the field of hybrid quantum systems. The thesis starts at a basic level, explaining the nature of collective effects in great detail. It develops the concept of Dicke states spin-by-spin, and introduces it to circuit quantum electrodynamics (QED), applying it to a strongly coupled hybrid quantum system studied in a broad regime of several different scenarios. It also provides experimental demonstrations including strong coupling, Rabi oscillations, nonlinear dynamics, the cavity protection effect, spectral hole burning, amplitude bistability and spin echo spectroscopy.

This thesis combines quantum electrical engineering with electron spin resonance, with an emphasis on unraveling emerging collective spin phenomena.