Famous the world over for the creative brilliance of his insights into the physical world, Nobel Prize-winning physicist Richard Feynman also possessed an extraordinary talent for explaining difficult concepts to the nonscientist. QED--the edited version of four lectures on quantum electrodynamics that Feynman gave to the general public at UCLA as part of the Alix G. Mautner Memorial Lecture series--is perhaps the best example of his ability to communicate both the substance and the spirit of science to the layperson.</p>
The focus, as the title suggests, is quantum electrodynamics (QED), the part of the quantum theory of fields that describes the interactions of the quanta of the electromagnetic field-light, X rays, gamma rays--with matter and those of charged particles with one another. By extending the formalism developed by Dirac in 1933, which related quantum and classical descriptions of the motion of particles, Feynman revolutionized the quantum mechanical understanding of the nature of particles and waves. And, by incorporating his own readily visualizable formulation of quantum mechanics, Feynman created a diagrammatic version of QED that made calculations much simpler and also provided visual insights into the mechanisms of quantum electrodynamic processes.</p>
In this book, using everyday language, spatial concepts, visualizations, and his renowned "Feynman diagrams" instead of advanced mathematics, Feynman successfully provides a definitive introduction to QED for a lay readership without any distortion of the basic science. Characterized by Feynman's famously original clarity and humor, this popular book on QED has not been equaled since its publication.</p>
QED,讲述了光子的运动、电子的运动与光子 电子的相互作用。此外,最后一章讲述了QCD。 一开篇以部分反射为例,讲述了光子的运动特性。光以粒子的特性运动,运动规律不再遵循经典力学中,某一时刻位于某一位置的规律;而是以波函数表示的。费曼采用的小箭头运算的方法明晰表达...
评分QED,量子电动力学,听这名字就装逼到了极致,并且对于大多数人来说,光看这个装逼的名字,肯定就望而却步了! 只要是接触量子力学有关的书,那肯定免不了接触到QED这个名词,我也是出于好奇,就想买本书看看QED到底是个什么玩意。说到这东西,入门的话,肯定选择...
评分QED,讲述了光子的运动、电子的运动与光子 电子的相互作用。此外,最后一章讲述了QCD。 一开篇以部分反射为例,讲述了光子的运动特性。光以粒子的特性运动,运动规律不再遵循经典力学中,某一时刻位于某一位置的规律;而是以波函数表示的。费曼采用的小箭头运算的方法明晰表达...
评分高中數學物理水平就能讀懂的漂亮科普。 而且作者本人的風格也極具魅力。 太棒了,所以沒法說的更多。
评分QED,量子电动力学,听这名字就装逼到了极致,并且对于大多数人来说,光看这个装逼的名字,肯定就望而却步了! 只要是接触量子力学有关的书,那肯定免不了接触到QED这个名词,我也是出于好奇,就想买本书看看QED到底是个什么玩意。说到这东西,入门的话,肯定选择...
很好吃~!
评分听名字就会吓一跳,有勇气翻开的人就会觉得,哎吆,不错喔!费曼花了四节课的时间介绍了量子电动力学中的一个计算模型,因为忽略掉具体计算技巧,可读性较强。正因为如此,有好多精妙的地方就不是能够很透彻的理解。
评分几年后重读。营养丰富的甜点。不仅是QED的图景和概念,还是物理的范式和文化 - 哪里需要问为什么,哪里不需要,怎么问,问什么。重新理解费曼。
评分费曼就是能把量子电动力学讲到中学生都可以理解的程度。只有真正懂的人能把现代物理理论表达这么清楚简单。手起刀落,不故弄玄虚,太帅了。
评分几年后重读。营养丰富的甜点。不仅是QED的图景和概念,还是物理的范式和文化 - 哪里需要问为什么,哪里不需要,怎么问,问什么。重新理解费曼。
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