This new fourth edition retains the two-volume format，which has been generally well received，with broadly the same allocation of content as in the third edition. The principal new additions are，once again，dictated by substantial new experimental results - namely，in the areas of CP violation and neutrino oscillations，where great progress was made in the first decade of this century. Volume 2 now includes a new chapter devoted to CP violation and oscillations in mesonic and neutrino systems.Partly by way of preparation for this，volume 1 also contains a new chapter，on Lorentz transformations and discrete symmetries.We give a simple do-it-yourself treatment of Lorentz transformations of Dirac spinors，which the reader can connect to the group theory approach in appendix M of volume 2; the transformation properties of bilinear covariants are easily managed. We also introduce Majorana fermions at an early stage.This material is suitable for first courses on relativistic quantum mechanics，and perhaps should have been included in earlier editions （we thank a referee for urging its inclusion now）.To make room for the new chapter in volume 1，the two introductory chapters of the third edition have been condensed into a single one，in the knowledge that excellent introductions to the basic facts of particle physics are available elsewhere. Otherwise，apart from correcting the known minor errors and misprints，the only other changes in volume 1 are some minor improve-ments in presentation，and appropriate updates on experimental numbers.Volume 2 contains significantly more in the way of updates and additions，as will be detailed in the Preface to that volume. But we have continued to omit discussion of speculations going beyond the Standard Model; after all，the cru-cial symmetry-breaking （Higgs） sector has only now become experimentally accessible.

The main focus of the second volume of this fourth edition，as in the third，is on the two non-Abelian quantum gauge field theories of the Standard Model -that is，QCD and the electroweak theory of Glashow，Salam and Weinberg，We preserve the same division into four parts： non-Abelian symmetries，both global and local; QCD and the renormalization group; spontaneously broken symmetry; and weak interaction phenomenology and the electroweak theory.However，the book has always combined theoretical development with dis-cussion of relevant experimental results. And it is on the experimental side that most progress has been made in the ten years since the third edition appeared-first of all，in the study of CP violation in B-meson physics，and in neutrino oscillations. The inclusion of these results，and the increasing im-portance of the topics，have required some reorganization，and a new chapter （21） devoted wholly to them. We concentrate mainly on CP violation in B-meson decays，particularly on the determination of the angles of the unitarity triangle from B-meson oscillations.CP-violation in K-meson systems is also discussed. In the neutrino sector，we describe some of the principal experi-ments which have led to our current knowledge of the mass-squared differencesand the mixing angles.In discussing weak interaction phenomenology，we keep in view the possibility that neutrinos may turn out to be Majorana particles，an outcome for which we have prepared the reader in （new） chapters 4 and 7 of volume 1.

Much has （or has not） happened in the seven years or so since the publication of the first edition of this book. Most notably， a new spin-0 particle with mass~125 GeV was discovered at the LHC by the ATLAS and CMS collaborations， which is either the elementary Higgs boson or something that closely resembles it. The Higgs discovery completes the ≥40 year saga of verifying the standard model （SM）. Moreover， its mass is almost maximally interesting： it is near the top of the range predicted by the most popular SM extension，minimal supersymmetry， and near the minimum value consistent with the unextended SM （and then only if the vacuum is metastable）！However， the notorious problems of the SM are still unresolved. Perhaps the most press-ing is the apparently fine-tuned hierarchy between the weak interaction and gravity scales.Extensive searches at the LHC and elsewhere have so far not yielded any compelling evidence for new TeV-scale physics such as supersymmetry， extra space dimensions， or strong cou-pling that had been proposed to explain or at least stabilize the hierarchy. Equally puzzling is the nature of the dark energy and its incredibly tiny magnitude compared to most theo-retical expectations. Similarly， numerous experimental attempts to identify the mysterious dark matter inferred from its gravitational effects have not as yet had any positive results and have excluded much of the parameter space for supersymmetric dark matter. And de-spite the great experimental success of the SM， it is a very complicated theory， involving severalinteractions with different properties， and two apparently superfl.uous heavier copies of the fundamental particles that constitute ordinary matter under ordinary conditions. For these and other reasons， many theorists have started exploring less canonical possibilities，such as a dark matter sector that is at most very weakly coupled to ordinary particles，or， more radically， that the Universe is part of a vast multiverse of regions （presumably associated with a superstring landscape of vacua with different laws of physics.

本书是一本聚焦于E=mc2的现代物理入门读物。E=mc2这个公式由26岁的爱因斯坦提出，给物理学带来了革命性的变化，可以说是世界上最有名的公式之一。不过，你真正了解这个公式究竟意味着什么，它又如何影响我们的世界吗？不要担心，在本书中，我们不使用任何艰深的数学公式和复杂的推导，而是会从基础的概念开始，沿着物理学的发展，带你逐步走进这个公式的秘密，了解它所引发的神奇现象。从经典力学、相对论到量子物理……让我们在了解物理学发展中的关键知识的同时，轻松揭开它的多重奥秘！加热的马克杯会变重？跑得越快体重越会增加？核武器为什么会发挥巨大的威力？物理学甚至可以使宇宙“无中生有”？一切都是E=mc2干的“好事”！

物理课上要背那么多公式、定律，还有那么多计算，学起来好像很难，又没意思……有没有一种有趣的学习方式呢？ 有的。 本书为小读者带来的是22堂不一样的趣味物理课，开启你的好奇心、创造力，培养你的科学思维，让你越学越想学，越学越轻松。 为激发物理学习兴趣，作者用青少年耳熟能详的古诗词、俗语、历史故事作为标题，设置了22个有趣的物理问题，从青少年可以感知、观察到的日常生活现象出发，用物理学的视角引导孩子理解诸如重力、浮力、能量、光的折射、电与磁等生活现象，这也很好地覆盖了小学科学课和中学物理的教学大纲的知识点，帮助孩子建立起专属于物理学科的思维方式，为中学物理学习夯实基础。

本书首次将亚原子物理学的神秘主义阐释带入公众视野，并通过古代神秘主义传统和20世纪物理学发现之间的平行比较，很大程度上挑战了过去物理学研究中的的保守思想，并为探讨量子力学同佛教、印度教和道教思想之间关联性的研究奠定了基础。本书于1975年首次出版，凭借其广阔的视野、生动的论述与鲜明的主张已然成为国际畅销书。时至今日，本书已有43个版本问世，涵盖23种语言，享誉全球，可以说是作者完成的一个意义非凡的项目。

本书系统总结国内外碳纳米填料阻燃聚合物领域的进展，重点介绍著者研究团队在碳纳米管、富勒烯、石墨烯等碳纳米填料阻燃聚合物方面所做的工作。全书共五章。第一章简要介绍聚合物的燃烧与阻燃理论、阻燃性能的表征与评价方法及碳纳米填料的分类及其阻燃机理，第二章综述碳纳米填料阻燃聚合物的国内外研究进展，后面三章分别介绍著者研究团队在碳纳米管、富勒烯、石墨烯阻燃聚合物方面的研究成果。 本书可供从事聚合物阻燃和纳米复合材料领域基础研究和应用开发的科研工作者阅读，也可以作为相关专业研究生的教学参考书。

《新型La-TZM钼合金制备及性能》主要介绍了新型La-TZM 钼合金的制备技术与性能调控方式，系统地研究了新型La-TZM钼合金的力学性能及强韧化机理、低氧控制、防氧化和抗腐蚀性能，可为制备高性能的钼合金提供技术支持。《新型La-TZM钼合金制备及性能》共4章，主要内容包括：钼合金强韧化和性能研究进展及其存在的问题、新型La-TZM钼合金的力学性能及强韧化机制、新型La-TZM钼合金的低氧和抗氧化性能研究及新型La-TZM 钼合金的抗腐蚀性研究。

本书主要论述了太赫兹表面等离激元现象的基本原理、调控方法、器件设计以及太赫兹超分辨成像应用等。全书共七章，包括第１章THz表面等离激元产生的物理机理及赝表面等离激元的概念引入；第２章激发THz表面等离激元和赝表面等离激元的方法及赝表面等离激元的传输特性；第３章金属平板波导结构中的THz波的传输及赝表面等离激元对THz的全反射；第４章半导体和金属光子晶体板结构中的表面等离激元引起的THz的透射增强；第５章赝局域表面等离激元的增强特性及在THz中的激发；第６章超表面中的等离激元实现太赫兹偏振转换和完美吸收；第７章太赫兹远场超分辨聚焦和散射式近场扫描显微成像技术。

本书内容以说明原子结构为中心，从光谱学、电磁学、X射线等方面的实验事实和总结出的规律，汇总到原子结构的全貌.书中有“量子力学初步”一章，介绍阐述有关问题所需要的量子力学基本概念.全书在围绕中心目标述及有关实验事实和规律时，也顺便提到目前有些重要应用方面，如激光原理、顺磁共振、X射线的衍射等.本书最后两章分别对原子核和基本粒子作了简要的介绍.各章均附有习题，全书采用国际单位制.本书可作为高等学校物理类专业的教材，也可供其他专业的相关教师学生参考.