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Physics in EnglishThe scientist does not study nature because it is useful;he studies it because he delights in it,and he delights in it because it is beautiful.If nature were not beautiful,it would not be worth knowing,and if nature were not worth knowing,life would not be worth living."------ Henri PoincareDepartment of PhysicsSchool of scienceXian Technological University 2012.9Chapter 1 What is Physics?Physics is natural science studying nature's LawsPhysics was called natural philosophy and fundamental science.The history of physicsThe history of physics encompasses two broad time periods in which classical physics and modern physics developed. Classical physics developed between 1600 and 1900. It embraces the general areas of physics known as mechanics, thermodynamics, and electromagnetism, culminating in relativity. Modern physics began developing between about 1890 and 1930, when it was realized that classical physics could not account for the newly discovered behavior of nature at the atomic and molecular level. Modern physics includes the theory of relativity as well as quantum mechanics and most of the subsequent new physics discovered and developed during the 20th century.Classical physicsClassical physics includes the traditional branches and topics that were recognized and well-developed before the beginning of the 20th century—classical mechanics, optics, thermodynamics, and electromagnetism. Classical mechanics is concerned with bodies acted on by forces and bodies in motion and may be divided into statics (study of the forces on a body or bodies at rest), kinematics (study of motion without regard to its causes), and dynamics (study of motion and the forces that affect it); Acoustics, the study of sound, is often considered a branch of mechanics because sound is due to the motions of the particles of air or other medium through which sound waves can travel and thus can be explained in terms of the laws of mechanics. Among the important modern branches of acoustics is ultrasonics, the study of sound waves of very high frequency beyond the range of human hearing. Optics, the study of light, is concerned not only with visible light but also with infrared and ultraviolet radiation, which exhibit all of the phenomena of visible light except visibility, e.g., reflection, refraction, interference, diffraction, dispersion, and polarization of light. Heat is a form of energy, the internal energy possessed by the particles of which a substance is composed; thermodynamics deals with the relationships between heat and other forms of energy. Electricity and magnetism have been studied as a single branch of physics since the intimate connection between them was discovered in the early 19th century; an electric current gives rise to a magnetic field and a changing magnetic field induces an electric current. Electrostatics deals with electric charges at rest, electrodynamics with moving charges, and magnetostatics with magnetic poles at restThe Emergence of Classical PhysicsClassical mechanics has its roots in the work of Johannes Kepler, who, between 1600 and 1619, became the first person to describe quantitatively and accurately the elliptic paths of the planets around the Sun.The problem of the shape of the planetary orbits was not easy to solve, because all historical observations of the planets were made from the Earth, itself a moving planet. Although a crude heliocentric(Sun-centered) model of the solar system using circular orbits was proposed by the Greek astronomer Aristarchus in the third century B.C. and resurrected by Copernicus in 1542,the planetary positions predicted by Copernicus were not as accurate as those found using Ptolemy's complicated geocentric (Earth-centered} model of the second century A.D.The pure Copernican model was inaccurate because Copernicus refused to abandon the flawed concept of early Greek thought that the natural path of a moving "perfect" celestial object, such as a planet, had to be in the shape of the "perfect" geometrical figure---a circle---with the planet moving at constant speed. a scientist living at the time of Copernicus would have been forced to reject the Copernican theory with its circular planetary orbits, since they did not account for the observed motions of the planets as accurately as the existing, but more complicated, geocentric theory of Ptolemy.The change from the accurate but complex Ptolemaic geocentric model of the solar system to the accurate and simple heliocentric model of Kepler illustrates the characteristics of a good theory. With Kepler's work, accuracy and simplicity blossomed simultaneously from the heliocentric hypothesis. Kepler's model and mathematical methods began the development of physics as we know it. His work was a watershed of quantitative thought and a new worldview.Observation of nature and experimental results typically precede the general theories that account for them. The extensive observations of the planets by Tycho Brahe just prior to 1600 provided Kepler with the data he needed to model the solar system accurately and precisely。
物理学专业英语仲海洋版9.2节Unit ThreeLESSON 99.1 物理学专业英语中的长句分析（一）总的来说，专业英语文献中的句子长度呈现两种趋向: 长难句多，短的简单句也多。
一个句子长达一百来个单词，构成一个完整的段落的现象屡见不鲜。
物理学专业英语用于表达科学理论、原理、规律、概述,以及各事物之间错综复杂的关系，而复杂的科学思维是无法使用简单句来表达的。
为了表示严谨、精确的含义，语法结构复杂的长句有较多的应用，而这种严谨周密、层次分明、重点突出的语言手段也就成了专业英语文体又一重要特征。
长句由基本句型扩展而成，其方式有增加修饰成分如定语、状语的，有用各种短语如介词、分词、动名词或不定式短语充当句子成分的，也可能是通过关联词将两个或两个以上的句子组合成复合句。
从句子结构来看，英语中句子可分简单句，并列复合句和主从复合句。
英语利用形态变化、词序和虚词三大语法手段可构成包孕许多修饰成分或从句的长句，句中各部分顺序灵活多样。
通常英语句中的表态部分（如判断和结论）在先，而叙事部分（如事实和描写）在后，汉语则正好相反；英语句中先短后长，“头轻脚重”，而汉语也正好相反；英语借助形态变化和连接手段而将句中成分灵活排列，汉语则常按时间和逻辑顺序由先到后、由因到果、由假设到推论、由事实到结论这样排列。
在专业英语的学习中，长句的分析是一个非常重要的基础，无论是专业文献阅读、翻译还是严谨精确地写作，都要从长句分析开始。
长句分析既重要也有些难度。
然而，无论多长的句子、多么复杂的结构，它们都是由一些基本的成分组成的。
只要弄清英语原文的句法结构，找出整个句子的中心内容，理解各层意思，然后分析各层意思之间的逻辑关系，再按汉语的特点和方式表达就可以理解或译出原文了。
9.1.1 长句结构的分析抓住主干，添枝加叶。
所谓抓住主干，就是在理解长句时首先要找到主语、谓语这两个主要成分。
添枝加叶，就是在主语、谓语这两个主要成分的基础上，逐个加上各种修饰语，包括定语、状语、补语、非谓语动词结构、各种从句等。
1、vectors矢量：velocity（速度v）acceleration（加速度a）force（力f）displacement（位移）,Vectors(向量)2、scalars标量：speed（速率）weight（重量）mass（质量）volume（体积）energy（能量）work（功）3、The unit of SI(国际标准单位)：metre米,kilogram千克KG,second秒S,newton牛顿N,watt瓦特W,ampere安培A,joule焦耳J4、连线：length长度----metre(M米)，mass质量----kilogram(KG千克)，time时间----second(S秒)，current电流----ampere(A安培)，temperature温度----kelvin(K开尔文)，amount物质的量----mole(MOL摩尔)，charge电荷----coulomb(C库伦)，force力----neton(N牛顿)，energy能量----joule（J焦耳），resistance电阻----ohm（Ω欧姆）5、(√×)Average velocity is not necessarily the same as average speed.平均速度不等于平均速率。
6、概念Displacement位移is distance moved in a particular direction. metre (m).7、用点，他们的组合效果被称为合力。
8、The turning effect of a force is called a moment（力矩）9、On earth, everything feels the downward force of gravity。
This gravitational force is called weight.（重力）10、Near the Ether’s surface, the gravitational force on each kg is about 10 N:the gravitational field strength重力场强度is 10 N kg-1. This is represented by the symbol g.（g的概念）11、Work功is done whenever a force makes something move.12、Things have energy能if they can do work。
物理学专业英语以下是一些常见的物理学专业英语词汇：1. Newton 牛顿2. acceleration 加速度3. velocity 速度4. momentum 动量5. potential energy 势能6. kinetic energy 动能7. conservation of energy 能量守恒8. law of conservation of momentum 动量守恒定律9. gravitation 重力10. mass 质11. weight 重量12. force 力13. electric charge 电荷14. electric field 电场15. potential difference 电压差16. current 电流17. resistance 电阻18. voltage 电压19. capacitance 电容20. inductance 电感21. quantum mechanics 量子力学22. special relativity 狭义相对论23. general relativity 广义相对论24. elementary particles 基本粒子25. Higgs boson 希格斯玻色子26. antimatter反物质27. virtual particles 虚粒子28. uncertainty principle 不确定性原理29. wave-particle duality 波粒二象性30. quantum entanglement 量子纠缠31. classical mechanics 经典力学32. statistical mechanics 统计力学33. thermodynamics 热力学34. fluid mechanics 流体力学35. optics 光学36. acoustics 声学37. electromagnetism 电磁学38. weak interaction 弱相互作用39. strong interaction 强相互作用40. quantum chromodynamics 量子色动力学。
期末单词1.Thermal energy ['θɝml]热能2.The zeroth law of thermodynamics [,θɝmodaɪ'næmɪks]热力学第零定律3.Calorie 卡路里4.Heat transfer 热传tent heat 潜热6.An exact differential ['dɪfə'rɛnʃəl] 完整微分7.Measurable ['mɛʒərəbl] quantity 可测量的量8.Potential energ y 势能9.An ideal gas 理想气体10.Heat capacity [kə'pæsəti]热容11.Constant pressure 常压12.Initial temperatu re 初始温度13.Fermi-Dirac statistics 费米-狄拉克统计14.Phase change 相变15.Boiling point 沸点16.Water vapor ['vepɚ] 水蒸气17.Buoyancy ['bɔɪənsi] force 浮力18.The black bod y 黑体19.Greenhouse effect 温室效应20.Incandescent lightbulb ['ɪnkən'dɛsnt laɪt'bʌlb ]白炽灯21.Naturally occurring material 自然发生的材料22.Out-of-phase 反相23.Optical frequencies ['frikwənsiz]光频率24.Bandwidth 带宽25.Semiconductor [,sɛmɪkən'dʌktɚ]半导体26.Artificial [,ɑrtɪ'fɪʃl] material 人工材料27.Material parameters 材料参数28.Density of electrons 电子密度29.Metamaterial 超材料30.Megahertz ['mɛɡəhɝts]兆赫31.Capacitance [kə'pæsətns]电容32.Inductance 电感33.Refractive [rɪ'fræktɪv] index 折射率34.The square root 平方根35.Snell’s law 菲涅尔定律36.Transparent sample 透明样品37.Negative refraction 负折射38.Angle of refraction 折射角39.Photonic crystal [f o'tɑnɪks 'krɪstl ]光子晶体40.Periodicity [,pɪrɪə'dɪsəti]周期性41.Nuclear ['nuklɪɚ] bomb 原子弹42.Conservation of energy 能量守恒43.Energy levels 能级44.Chemical element 化学元素45.Periodic [,pɪrɪ'ɑdɪk] table 周期表46.Electron shell 电子壳层47.Atomic orbital model 原子轨道模型48.Fusion 聚变49.Subatomic [,sʌbə'tɑmɪk] particles 亚原子粒子50.Atomic Isotope ['aɪsə'top]原子同位素51.Nuclear reactor 核反应堆52.Radioactive ['redɪo'æktɪv] decay 放射性衰变53.Atomic nucleus ['nuklɪəs]原子核54.Half-life 半衰期55.Cobalt 60 钴6056.Alpha decay α衰变57.Nuclear explosion 核爆58.Positron ['pɑzɪtrɑn]正电子59.Excited state 激发态60.Spontaneous [spɑn'tenɪəs] fission 自发裂变61.Enthalpy [en'θælpɪ]焓62.Thermal equilibrium [,ikwɪ'lɪbrɪəm]热平衡63.An irreversible [,ɪrɪ'vɝsəbl] process 不可逆过程64.Calorie 卡路里65.Internal energy 内能66.Fuels 燃料67.Heat flow 热流68.Entropy ['ɛntrəpi]熵69.Measurable ['mɛʒərəbl] quantity 可测量的量70.Potential energ y 势能71.State function 状态函数72.Constant volume 常体积73.Internal degrees of freedom 内在自由度74.Monatomic [,mɒnə'tɒmɪk]单原子的75.Diatomic 双原子的76.Conduction 传导77.Convection 对流78.On a microscopic [,maɪkrə'skɑpɪk] scale 在微观尺度上79.Thermal radiation 热辐射80.Microwave oven 微波炉81.Index of refraction 折射率82.Applied electric field 施加的电场83.Resonance phenomena ['rɛznəns]共振现象84.In-phase 同相85.Frequency dispersion 频率色散86.Waveleng th 波长87.Miniature circuit ['mɪnətʃɚ 'sɝkɪt]微型电路88.Electromotive [ɪ,lɛktrə'motɪv] force 电动力plex number 复数90.Imaginary part 虚部91.Reversal [rɪ'vɝsl] of refraction 折射的反转92.The direction of incidence 入射方向93.Counterintuitive [,kaʊntərɪn'tʊɪtɪv; ,kaʊntərɪn'tjʊɪtɪv]发直觉的94.Boeing Phantom W orks 波音幻影工厂95.Detector 探测器96. A periodic structure 周期结构97.Electrical engineering电子工程98.Microwave circuit 微波电路99.Resonator 共振器100.Materials physics 材料物理101.Electronic configuration 电子排布102.Neutral atom 中性原子103.An experimental observation 实验观察104. A theoretical explanation 理论解释105.Bohr atom model 玻尔原子模型106.Spectroscopy [spɛk'trɑskəpi]波谱学107.Collision [kə'lɪʒən] process 碰撞过程108.Fission 裂变109.Electrical charge 电荷110.Optical microscope 光学显微镜111.Atomic number 原子数112.Interchangeable 可交换的113.Radioactivity 放射性114.Neutron ['nʊtrɑn]中子115.Proton ['protɑn]质子116.Radiation cancer therapy 放射癌症疗法117.Uranium [jʊ'renɪəm]镭118.Beta decay β衰变119.Gamma rays γ射线120.Genetic mu tation 基因变异期中单词1.Classical mechanics 经典力学2.Wave-particle duality 波粒二象性3.General relativity广义相对论4.Special relativity 狭义相对论5.Universal gravitation 万有引力6.Ellipse [ɪ'lɪps]椭圆7.An inclined plane 斜面8.The law of inertia [ɪ'nɝʃə]惯性定律9.The law of acceleration [ək'sɛlə'reʃən]加速度定律10.The law of action and reaction作用力反作用力定律11.Conservation of momentum [mo'mɛntəm]动量守恒12.Angular momentu m 角动量13.Theoretical explanation 理论解释14.Geometric optics 几何光学15.Corpuscular[kɔr'pʌskjəlɚ] theory 微粒说16.Forces applied 施力17.Degree of freed om 自由度18.Structure of space 空间结构19.Coordinate system 坐标系统20.Frame of reference 参照系21.Inertial frame 惯性系22.Non-inertial reference frame非惯性参考系23.Special position 特殊位置24.Relativistic mechanics 相对论力学25. A fundamental postulate 一个基本假设26.Ordinary differential equation 常微分方程27.Friction 摩擦力28.Initial velocity 初始速度29.Kinetic energy 动能30.Potential energ y 势能31.Conservation of energy 能量守恒32.Gravity force 重力33.Scalar ['skeilə; -lɑ:] product 标量积34.Line integral 线积分35.Conservative force 保守力36.Work-energy theorem 功能定理37.Current-carrying wire 载流线38.Statistical mechanics 统计力学39.Geometric optics 几何光学40.Direct current 直流41.Spring constant 弹簧常数42.Angular acceleration 角加速度43.Deceleration 减速44.Electromagnetism [i,lektrəu'mæɡniti zəm]电磁学45.Fundamental interaction 基本相互作用46.Electric field 电场47.Magnetic field 磁场48.Electrically charged particles 荷电粒子49.Electromagnetic induction 电磁感应50.Electric potential 电势51.Photon 光子52.Electricity and magnetism 电和磁53.Negative charges 负电荷54.Unlike charges 异性电荷55.Electrod ynamics 电动力学56.V isible light 可见光57.Gamma ray γ射线58.Attraction and repulsion 吸引和排斥59.Accurate theory 准确的理论60.Electromagnetic nature of light 光的电磁本性61.Maxwell’s equations 麦克斯韦方程62.Theoretical physics 理论物理63.Quantum effect 量子效应64.Speed of light 光速65.Electrical permittivity [,pɝmɪ'tɪvəti]介电常数66.Magnetic permeability 磁导率67.Photoelectric effect 光电效应68.Ultraviolet 紫外的69.Black b ody radiation 黑体辐射70.Quantum mechanics 量子力学71.Partial differential equation 偏微分方程72.Faraday’s law of induction 法拉第感应定律73.Magnetic [mæg'nɛtɪk] monopole ['mɑnə,pol]磁单极74.Dipole 偶极75.V ector field矢量场76.Electric generator 发电机77.Electromagnetic wave equation 电磁波动方程78.Electromagnetic radiation 电磁辐射79.Interferometer [,ɪntɚfɪ'rɑmətɚ] 干涉仪80.Lorentz transformation 洛伦兹变换81.Absolute reference frame 绝对参考系82.Inertial frame of reference 惯性参考系83.The principle of relativity 相对性原理84.Stationary system 静止系统85.Isotropy [ai'sɔtrəpi] 各向同性86.Homogeneity [,hɑmədʒə'niəti]均匀，同质性87.Light-speed invariance 光速不变88.Limiting speed 极限速度89.Mass-energy equivalence 质能等价性90.Conservation law 守恒定律91.Massless 无质量的92.Problematic ['prɑblə'mætɪk] 有问题的93.Elastic[ɪ'læstɪk]弹性94.Absolute state of rest绝对静止的状态95.Time dilation [dɪ'leʃən]时间膨胀96.Relative speed 相对速度position of velocities [və'lɑsətiz]速度合成98.Relativity of simultaneity 同时的相对性99.Lorentz contraction 洛仑兹收缩100.Three dimensions 三维。
第一章：运动学Vector quantity: A quantity that has both magnitude and direction .译文;矢量：一个既有大小又有方向的量Scalar quantity A quantity that has magnitude, but no direction.译文：标量：一个只有大小没有方向的量Vector An arrow drawn to scale used to represent a vector quantity.译文：矢：一个标有刻度的箭头去代表矢量Motion A change of position.译文：运动：位置的改变Speed The distance traveled per time.译文：速率：单位时间内走过的路程Velocity The rate of change position and the direct of the motion.译文：速度：沿运动方向位移的变化率Acceleration Time rate of velocity :Acceleration=change in velocity/time it takes for change.译文：加速度：速度的变化率，加速度=速度的变化量/这段时间第二章：守恒定律Force ： A quantity capable of producing motion or a change in motion.译文：力：一个能够产生运动或该变运动的量Net force： The equivalent or resultant force of two or more force.译文：合外力：它等价于两个或多个力或者可由其合成Newton’s first law of motion(law of inertia)： An object remains at rest or in uniform motion with a constant velocity unless acted upon by a net unbalanced force.译文：牛顿第一定律：一切物体总保持静止或匀速直线运动知道有不平衡的力迫使他改变为止。
part one mechanics力学chapter 1 kinematics—uniformly accelerated motion运动学，匀加速运动frame of reference: 参照系position vector and displacement 位置向量和位移speedvelocity 速度instantaneous velocity瞬时速度velocity components速度分量acceleration 加速度graphical interpretation图像释义uniformly accelerated motion along a straight line 匀加速直线运动acceleration due to gravity (g) 重力加速度projectile problems落体问题relative motion相对运动chapter 2 dynamics-- newton's laws of motion动力学- 牛顿运动定律general properties of forces in mechanics:力的基本性质1 the law of universal gravitation万有引力定律2the weight 重量3 the tensile force 拉力4 the normal force 法向力5 the friction force 摩擦力6 dimensional analysis三维分析chapter 3 equilibrium平衡concurrent forces共点力are forces whose lines of action all pass through a common point. the forces acting on a point object are concurrent because they all pass through the same point, the point object.equilibrium 平衡rigid body刚体the torque (or moment) 转矩或力矩the two conditions for equilibrium 平衡的两个条件the center of gravity 重心axis轴chapter 4 work and energy功和能kinetic energy (ke) 动能conservative force保守力⑵gravitational (weight) potential energy (peg) 重力（重量）势能⑵elastic potential energy 弹性势能the efficiency 效率chapter 5 impulse and momentumthe linear momentum 冲量与动量an impulse 冲量collisions and explosions碰撞和爆炸a perfectly elastic collision 完全弹性碰撞coefficient of restitution恢复系数the center of mass重心chapter 6 rotation转动the angular speed 角速度the angular acceleration 角加速度tangential 【数】切线;正切centripetal acceleration ( )加速度the centripetal force 向心力chapter 7 rigid-body rotation刚体转动the moment of inertia 转动惯量parallel-axis theorem平行轴定理chapter 8 elasticity弹性elasticity弹性;弹力the stress 【物】应力[u][c]strain 应变the elastic limit弹性极限the shear modulus 切变模量standard atmospheric pressure标准大气压the hydrostatic pressure静水压力equation of continuity连续性方程the viscosity 粘度spring弹簧a restoring force 恢复力simple harmonic motion 简谐运动vibratory motion 振动运动the period ( ) 【数】循环节;周期the frequency ( ) 频率the elastic potential energy 弹性势能the simple pendulum 单摆chapter 11 wave motion波动a propagating wave 波传播wave terminology波术语in-phase vibrations同相振动standing waves驻波conditions for resonance共振的条件longitudinal (compressional) waves 纵向（挤压）波chapter 12 sound声音the intensey （i）强度loudness 响度beats节拍doppler effect 多普勒效应interference effects 干扰效应part two thermodynamics热力学chapter 1 the kinetic theory of gases第1章气体动力学理论avogadro's number ( ) 阿伏伽德罗数（）the root mean square speed根均方速度the absolute temperature绝对温度the mean free path (m.f.p.) 平均自由程（m.f.p.）the equipartition theorem of energy 能量均分定理ideal gas law理想气体定律heat 热the internal energy 内部能量an isobaric process is a process carried out at constant pressure. 等压过程是恒压进行的过程。
新《物理专业英语》范围单词篇1 、加速度 acceleration2 、速度velocity3 、角速度 angular velocity4 、角动量angular momentum5、热量 amount of heat6、热力学第一定律 the first law of thermodynamics7、干涉 interference8、反射 reflection9、折射 refraction10、振幅 amplitude11、机械运动 mechanical motion12、保守场 conservative field13 、向心力 centripetal force14、保守力 conservative force15、摩擦力 friction force16 、面积 area17 、体积 volume18、阿伏加德罗常数Avogadro constant19 、绝对零度absolute zero20 、电势能 energy of position21、重力势能gravitational potential energy22、重力场 the field of gravity force23、真空中的磁场 magnetic field in a vacuum24、电磁波 electromagnetic wave25 、电流的相互作用interaction of current1 、（第 3 页）第四段的第 3 句A typical problem of mechanics consists in determining the states of a system at all the following moments of time t when we know the state of the system at a certain initial moment to and also the law governing the motion.翻译：机械运动的一个典型的问题的构成取决于一个系统在接下来的时间间隔t 的状态，（因此）当我们知道了一个确切的最初的系统状态时，也可以知道运动的规律。
