📚 Authors' Introduction to the Third Edition | 第三版作者序
It is with genuine excitement and a deep sense of responsibility that we present the third edition of our physics textbook, carefully crafted for students following the IB Diploma Programme and OCR A Level specifications. Over the past decade, the landscape of physics education has evolved rapidly — new discoveries have been made, assessment methods have shifted, and the way students engage with scientific ideas has transformed. This new edition is not simply a cosmetic update; it is a thorough reimagining of how physics can be learned, practised, and appreciated. Every chapter has been revisited, every problem refined, and every diagram redrawn to ensure clarity, accuracy, and relevance. Above all, we wanted this book to reflect the beauty and coherence of physics as a subject, while giving you, the learner, the tools and confidence to excel in your examinations and beyond.
我们怀着真诚的激动与深切的责任感，推出这本物理教材的第三版，它专为攻读IB文凭课程和OCR A Level物理的学生精心编写。过去十年间，物理教育的格局迅速演变——新的发现不断涌现，评估方式发生了转变，学生接触科学思想的方式也发生了深刻变化。这一版绝不仅仅是表面上的更新；它是对物理学习、练习和领悟方式的彻底重塑。我们对每一个章节都进行了重新审视，对每一道习题都进行了打磨，对每一幅图表都进行了重绘，以确保清晰性、准确性和相关性。最重要的是，我们希望这本书既能体现物理学作为一门学科的美感与连贯性，又能赋予你作为学习者的工具与信心，帮助你在考试中取得优异成绩，并在更远的未来有所建树。
1. A Fresh Vision for Modern Physics | 现代物理的新视野
In crafting this third edition, our primary goal was to bridge the gap between traditional textbook rigour and the dynamic, inquiry-driven approach demanded by both the IB and OCR specifications. We have retained the conceptual depth and mathematical precision that teachers value, while weaving in narrative explanations, real-world contexts, and historical anecdotes that make the subject come alive. Every topic, from classical mechanics to particle physics, is now introduced through a guiding question or a relatable phenomenon, inviting you to think before you calculate. This vision reflects our belief that physics is not a collection of formulas to be memorised, but a coherent story of how the universe works.
在编写这第三版时，我们的首要目标是弥合传统教材的严谨性与IB和OCR大纲所要求的探究式动态学习方法之间的鸿沟。我们保留了教师所看重的概念深度和数学精确性，同时融入了叙事性解释、真实世界背景和历史趣闻，使这门学科变得鲜活起来。从经典力学到粒子物理学，每一个主题现在都以一个引导性问题或一个易于关联的现象作为引入，让你在计算之前先进行思考。这一愿景反映了我们的信念：物理学不是一堆需要死记硬背的公式，而是一个关于宇宙如何运作的连贯故事。
2. Full Alignment with IB and OCR Specifications | 与IB和OCR大纲的全面接轨
We have scrutinised every line of the latest IB Physics guide (first assessment 2025) and the OCR A Level Physics specification (H556) to ensure absolute coverage. Topics such as the standard model, cosmology, and quantum technology have been given dedicated chapters or significantly expanded sections, mirroring their prominence in modern syllabi. For OCR learners, practical endorsement requirements are explicitly signposted, while IB students will find clear links to the Internal Assessment criteria, including guidance on experimental design, uncertainty analysis, and the personal engagement component. No extraneous content has been included; what you study here is precisely what you need to master.
我们逐行审读了最新的IB物理指南（2025年首次评估）和OCR A Level物理大纲（H556），以确保百分百覆盖。诸如标准模型、宇宙学和量子技术等主题已获得专门章节或大幅扩展的篇幅，反映了它们在现代课程中的重要地位。对于OCR学生，我们明确标出了实践认证要求；而IB学生则会发现与内部评估（IA）标准的清晰关联，其中包括对实验设计、不确定度分析和个人参与要素的指导。本书没有纳入任何无关内容；你在此学习的，正是你需要掌握的精确内容。
3. Rethinking Mechanics and Fields | 重新构思力学与场论
One of the most substantial revisions appears in the treatment of mechanics and fields. Based on feedback from thousands of students, motion graphs and vector components are now presented with step-by-step visual guides, reducing the cognitive load that often hinders early learners. Gravitational and electric fields are taught in parallel, emphasising their mathematical unity through an elegant comparison of inverse-square laws. The concept of potential becomes intuitive, not intimidating, as we connect gravitational potential wells to familiar contour maps and electric equipotentials to everyday voltage patterns.
最显著的修订之一出现在力学和场的处理上。根据数千名学生的反馈，运动图像和矢量分解现在配有循序渐进的视觉指南，降低了早期学习者经常面临的认知负荷。引力场和电场采用平行教学法，通过对平方反比定律的优雅比较，强调了它们在数学上的统一性。当我们把引力势阱与熟悉的等高线地图联系起来，并把电等势面与日常电压模式联系起来时，势能的概念就变得直观起来，而不再令人生畏。
4. Strengthening Mathematical Foundations | 夯实数学基础
Physics cannot be separated from its mathematical language, yet we know that many students feel anxious when equations dominate the page. The third edition addresses this by introducing a dedicated "Mathematics for Physics" section in the preliminaries, covering trigonometry, exponential decay, logarithms, and basic calculus with physics-rich examples. Throughout the chapters, important derivations are laid out in clear, numbered steps, with parallel annotations explaining the physical reasoning behind each algebraic manipulation. For example, the derivation of kinetic energy from work done now reads:
W = F × d → W = m a × d → v² = u² + 2ad → when u = 0, W = ½ m v²
物理离不开它的数学语言，但我们也知道，当等式中布满整页时，许多学生会感到焦虑。第三版通过在前言中专门设立「物理数学基础」部分来应对这一点，内容涵盖三角函数、指数衰减、对数和基础微积分，并配有丰富的物理实例。在全书各章中，重要的推导过程都以清晰、编号的步骤呈现，并附有平行注释，解释每一步代数运算背后的物理原理。例如，从做功推导出动能的过程现在呈现为：
W = F × d → W = m a × d → v² = u² + 2ad → 当 u = 0 时，W = ½ m v²
5. Practical Work and the Scientific Investigation | 实验操作与科学探究
Practical skills are no longer treated as an afterthought. Each major topic now integrates at least one detailed investigation plan, complete with apparatus lists, safety considerations, sample data tables, and analysis using digital tools. We have paid special attention to uncertainty propagation — a skill demanded by both IB's IA and OCR's Practical Endorsement. Exercises that require combining percentage uncertainties in products and quotients are introduced gradually, using real lab scenarios such as determining the resistivity of a wire or the acceleration due to gravity using a pendulum.
实验技能不再被当作附属内容。每个主要主题现在都至少整合了一个详细的实验探究计划，并配有仪器清单、安全注意事项、示例数据表以及使用数字工具进行分析的方法。我们特别关注了不确定度的传递——这是IB的IA和OCR的实践认证都要求掌握的技能。书中逐步引入了要求在乘积和商中合成百分比不确定度的练习，采用的均是真实的实验场景，例如测定导线的电阻率，或利用单摆测量重力加速度等。
6. Waves, Quantum Phenomena, and Modern Technology | 波动、量子现象与现代技术
Our rewritten section on waves now uses high-speed photography stills and ripple tank simulations to unpack superposition, standing waves, and the Doppler effect with unprecedented clarity. The introduction to quantum physics starts with the photoelectric effect and the de Broglie wavelength, then builds logically towards wavefunctions and probability — always linking back to the pioneers' original experiments. We also explore contemporary applications: how electron diffraction reveals crystal structures, how LEDs and lasers rely on discrete energy levels, and how quantum computing concepts are rooted in superposition and entanglement accessible at the pre-university level.
我们重写了波动部分，现在利用高速摄影图像和波纹槽模拟，以前所未有的清晰度剖析了叠加、驻波和多普勒效应。量子物理的引入以光电效应和德布罗意波长为起点，随后逻辑严密地构建到波函数和概率——并始终与先驱者的原始实验相联系。我们还探索了当代应用：电子衍射如何揭示晶体结构、LED和激光如何依赖离散能级，以及量子计算概念如何植根于叠加与纠缠等大学预科阶段即可触及的知识。
7. Thermodynamics and Nuclear Physics United | 热力学与核物理的统一
Thermodynamics often feels abstract, so we have grounded it in tangible systems: the ideal gas introduced via a bicycle pump, entropy explained through the mixing of coloured liquids, and the Carnot cycle motivated by the quest for ever more efficient engines. Nuclear physics is treated with similar realism: binding energy curves are not just plotted but interpreted alongside mass defect calculations that students themselves can perform. We cover fission and fusion with balanced discussions of their societal implications, encouraging critical thinking about energy choices and sustainability — skills explicitly valued in both IB and OCR assessments.
热力学常常让人觉得抽象，因此我们将其植根于具体系统中：通过打气筒引入理想气体，通过混合有色液体解释熵，并通过对追求更高效发动机的探索来引出卡诺循环。核物理也以同样的现实性进行处理：结合能曲线不仅仅被绘制出来，还配以学生自己可以进行的质量亏损计算来进行解读。我们讨论裂变和聚变时，会平衡地探讨其社会影响，鼓励对能源选择和可持续性进行批判性思考——这些能力在IB和OCR的评估中都受到明确重视。
8. Linking Concepts through Thematic Revision | 通过主题复习连结概念
A common student request was for better synoptic preparation. In response, we created a dedicated "Connecting Concepts" section at the end of each major unit, and a full thematic revision chapter near the end of the book. Here, energy, forces, and fields reappear across contexts: how the same conservation principles govern a roller coaster, a discharging capacitor, and a nuclear decay. These thematic threads not only prepare you for the synoptic questions typical of IB Paper 2 and OCR Unified Physics, but also deepen your understanding of physics as an interconnected edifice rather than isolated topics.
学生们普遍希望有更好的全局复习准备。作为回应，我们在每个主要单元末尾创建了专门的「概念连结」板块，并在全书接近末尾处设有完整的主题复习章节。在这里，能量、力和场在不同的背景中反复出现：相同的守恒原理如何支配着过山车、放电中的电容器和核衰变。这些主题线索不仅为你应对IB卷2和OCR统一物理中典型的综合性问题做好准备，还能加深你对物理学的理解，体会它是一座相互关联的大厦，而非彼此孤立的主题。
9. Enhanced Assessment Support | 强化的评估支持
Every chapter now concludes with three tiers of problems: "Foundation", "Exam Practice", and "Stretch and Challenge". The Foundation questions build confidence with single-concept calculations and definitions. Exam Practice directly mirrors the phrasing, mark allocations, and command terms used by IB and OCR examiners — questions are tagged with assessment objectives and approximate timings. Stretch and Challenge introduces multi-step problems, many drawn from past extension papers and university admission tests, for those aiming for the highest grades. Worked examples now include "Common Pitfall" warnings, highlighting errors we have seen students make repeatedly over the years.
每章末尾现在都设有三个层次的习题：「基础巩固」、「考试演练」和「拓展挑战」。基础巩固题通过单一概念的计算和定义来建立信心。考试演练则直接模拟IB和OCR考官使用的措辞、分值分配和指令词——题目均标有评估目标和建议完成时间。拓展挑战引入多步骤问题，其中许多摘自已往的拓展试卷和大学入学测试，适合志在最高等级的学生。例题现在包含「常见误区」警示，突出展示了我们多年来看到学生反复犯下的错误。
10. Digital Learning Ecosystem | 数字学习生态系统
Alongside the printed book, the third edition unlocks a comprehensive digital resources platform accessible via aleveler.com. This includes interactive simulations — such as building circuits with variable resistors and observing real-time current changes, or manipulating projectile launch angles while kinematic graphs update instantly. Video walkthroughs of difficult derivations, virtual lab simulations for practicals that are hard to replicate at home, and self-marking quizzes with instant feedback are all integrated. For IB learners, there are sample IA reports annotated with examiner comments, and for OCR students, exemplar PAG records and analysis tasks.
除了纸质教材，第三版还解锁了一个可通过 aleveler.com 访问的综合数字资源平台。其中包括互动模拟——例如连接可变电阻构建电路并实时观察电流变化，或者操控抛射角度同时运动学图像即时更新。此外还集成了难点推导的视频讲解、在家难以复现的虚拟实验模拟，以及带有即时反馈的自评分测验。IB学生可以获得附有考官评注的IA报告样本，而OCR学生则可获取示范性PAG记录和分析任务。
11. A Resource for All Learners | 面向所有学习者的资源
Accessibility has been a central pillar of this revision. We have carefully chosen language to be precise without being unnecessarily opaque, and we have introduced marginal glossaries that define key terms in both English and Mandarin, acknowledging the bilingual environment many of our readers navigate. Diagrams are rendered in high-contrast, colour-blind-friendly palettes, and all text is compliant with readability guidelines for learners with dyslexia. We believe that everyone, regardless of background or learning difference, deserves a clear path to understanding physics.
可及性是本次修订的核心支柱之一。我们精心选择了既精确又不至于晦涩的语言，并引入了页边词汇表，以英文和中文定义关键术语，充分考虑到许多读者所处的双语环境。图表采用高对比度、对色盲友好的配色方案，所有文本均符合为阅读障碍学习者设立的易读性指南。我们相信，无论背景或学习差异如何，每个人都应拥有一条理解物理的清晰路径。
12. Our Ongoing Commitment | 我们的持续承诺
This third edition has been a labour of love, informed by classroom trials, teacher workshops, and direct student feedback from across the globe. No textbook is ever truly finished — physics itself evolves, and so does our understanding of how best to teach it. We remain committed to updating the accompanying digital materials and errata in real time, and we invite you, our readers, to share your experiences and suggestions. Your curiosity and determination are the reasons we write, and we hope this book serves as a trustworthy companion on your journey through the fascinating world of physics. Thank you for allowing us to be part of your learning.
这第三版是一次倾注心血的创作，融入了全球各地的课堂试验、教师工作坊以及学生直接反馈。没有哪本教材可以真正定稿——物理学自身在发展，我们对如何最有效地教授物理的理解也在发展。我们承诺持续实时更新配套数字材料与勘误，并邀请你们，我们的读者，分享你们的经验与建议。你们的好奇心和决心是我们写作的动力，我们希望这本书能成为你探索奇妙物理世界的可靠伙伴。谢谢你让我们成为你学习之旅的一部分。
Published by TutorHao | Physics Revision Series | aleveler.com
更多咨询请联系16621398022（同微信）
或截图后用「扫一扫 → 相册」选择本图