Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版:英文原文完整保留,中文紧随对应单元;术语采用 v20260916 确认表,自动语义审校结果可追溯。

Conceptual Physics II, Day 10

概念物理II,第10天

What fundamental forces determine the stability of the nucleus?

哪些基本力决定核的稳定性?

Compare the size of the nucleus to the size of the atom.

将核的大小与原子的大小进行比较。

How are the sizes of such small things measured?

这样的微小事物如何测量其尺寸?

What is radioactivity and why does it happen?

什么是放射性,它为什么会发生?

Describe the three most common types of radioactivity.

描述三种最常见的放射性类型。

Which of the types of radioactivity is most dangerous outside your body? ... inside your body?

在你身体外,哪种放射性类型最危险?……在你身体内呢?

How do the energies involved in radioactivity compare with those in atomic spectra, visible light, etc.?

放射性涉及的能量与原子光谱、可见光等相比如何?

What is meant by radioactive half-life? Given an amount of a radioactive substance, how much will remain after three half-lives?

什么是放射性半衰期?给定一定量的放射性物质,经过三个半衰期后还剩多少?

What effect will raising the temperature of a radioactive substance have on its half-life? What effect will combining it into a chemical compound have? If a radioactive sample is vaporized, will that decrease its half-life?

提高放射性物质的温度对其半衰期有什么影响?将其结合成化学化合物又会有什么影响?如果将放射性样品蒸气化,这会减少其半衰期吗?

How can you tell if an amount of radiation is a health hazard?

如何判断一定量的辐射是否构成健康危害?

What kind of objects may be dated by carbon dating? About what maximum age would you expect to be able to determine with carbon dating?

哪些物体可以使用碳测定法进行年代测定?使用碳测定法,你预期能确定的最大年龄大约是多少?

What do you mean by "clocks in the rocks"? What sources of uncertainties are inherent within radioactive dating techniques?

你所说的‘岩石中的时钟’是什么意思?放射性鉴年法技术中有哪些固有的不确定性来源?
*Nuclear forces

*Nuclear scale model

*Rutherford scattering

*Radioactivity

*Alpha

*Beta

*Gamma

*Energies of radioactivity

*Half-life

*Half-life concepts

*Radiation risk

*Carbon dating

*Clocks-in -the-rocks

* 核力 * 核尺度模型 * 拉塞姆散射 * 放射性 * α射线 * β射线 * γ射线 * 放射性能量 * 半衰期 * 半衰期概念 * 辐射风险 * 碳 dating * 岩石中的时钟
Index
索引
  HyperPhysics***** Physics 7120
HyperPhysics ***** 物理学 7120
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Conceptual Physics II, Day 11

概念物理II,第11天

How can energy be obtained by nuclear fission? What isotopes are useful for such energy processes?

核裂变如何获得能量?哪些同位素适用于此类能量过程?

How can energy be obtained by nuclear fusion? What fuels seem to be most practical there?

核融合如何获得能量?哪种燃料似乎最实用?

Outline the difficulties which have been encountered with nuclear fission energy production.

概述在核裂变能生产过程中所遇到的困难。

If fission has problems, why don't we use fusion instead?

如果裂变有问题,为什么不用融合呢?

Given that fusion requires incredibly high temperatures, how do we contain such hot stuff?

鉴于核融合需要极高的温度,我们如何 containment 这样热的物质?

What is a fast breeder reactor?

什么是快中子增殖反应堆?

What is the role of the water which jackets the fuel in U.S. nuclear reactors? What do you mean by "moderation" in this context and why is it necessary?

美国核反应堆中包覆燃料的水起什么作用?在这一背景下,‘慢化’是什么意思?为什么这是必要的?

If you were told that you had been accidentally exposed to a radiation dose of 10 millirems, what would that mean to you? Are you doomed? Can you just ignore it?

如果你被告知自己意外接受了10毫雷姆的辐射剂量,这对你意味着什么?你是否注定会死?你可以忽略它吗?

What kinds of radioactive isotopes are most dangerous if released into the environment and why?

如果释放到环境中,哪些放射性同位素最危险,为什么?

Why does nuclear fission produce so many radioactive byproducts compared to nuclear fusion?

为什么核裂变会产生比核聚变更多的放射性副产物?

What is meant by "critical mass"? If a nuclear fission reactor has more than a critical mass of uranium-235, does that mean it can explode like a bomb?

‘临界质量’是什么意思?如果核裂变反应堆中的铀-235超过临界质量,是否意味着它会像原子弹一样爆炸?
*Energy from mass

*Fission energy

*Fusion energy

*Three-mile Island

*Chernobyl

*Magnetic bottle

*Inertial confinement

*Fast breeder reactor

*Water moderator

*Meet the millirem

*Radiation risk

*Cesium

*Strontium

*Fission fragments

*Critical mass

* 质量的能 * 裂变能 * 聚变能 * 三哩岛 * 切尔诺贝利 * 磁性容器 * 惯性约束 * 快堆 * 水慢化剂 * 遇见毫雷姆 * 辐射风险 * 铯 * 铀 * 裂变碎片 * 临界质量
Index
索引
  HyperPhysics*****Physics 7120
HyperPhysics ***** 物理学 7120
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Conceptual Physics I, Day 12

概念物理I,第12天

What evidence do we have that the velocity of light is a universal constant? What is the significance of that observation?

我们有哪些证据表明光速是一个普遍常量?这一观测结果有何意义?

Why do we say that the speed of light is the speed limit of the universe?

为什么说光速是宇宙的速度极限?

If you could make a detailed observation of the Enterprise as it passed the Earth at 90% of the speed of light, what conclusions would you draw about the measurement of lengths and times on the ship?

如果你能详细观察企业号在以光速90%驶过地球时的情况,你会得出什么结论?关于船上的长度和时间测量你会有什么看法?

If you were on the Enterprise moving at 90% of the speed of light past the Earth, what observations would you make about the measurement of length and time on the ship?

如果你正在企业号上以光速的90%驶过地球,你会观察到船上的长度和时间测量会有什么变化吗?

What kinds of evidence exists for length contraction and time dilation in real experiments?

有哪些实验证据支持长度收缩和时间膨胀?

If you were in a spaceship traveling past the Earth at 0.9 c and another spaceship was traveling toward you, also at 0.9 c, with what speed would you see the other ship approaching?

如果你乘坐的一艘宇宙飞船以0.9c的速度飞过地球,另一艘宇宙飞船正以0.9c的速度朝你驶来,你会看到另一艘飞船以多大的速度接近?

You encounter the terms "Galilean transformation" and "Lorentz transformation" often in literature about relativity. Under what conditions are the different transformations needed to describe nature?

你在相对论的文献中经常遇到“伽利略变换”和“洛伦兹变换”这两个术语。在什么条件下需要使用不同的变换来描述自然?

What happens to the mass of an object as it approaches the speed of light? Does light have mass? Does light have momentum?

当物体接近光速时,它的质量会发生什么变化?光有质量吗?光有动量吗?

Describe the implications of Einstein's famous equation, E=mc^2 . How does it handle kinetic energy?

描述爱因斯坦著名方程 E=mc² 的含义。它如何处理动能?

What is the principle of equivalence? Why is it important in the search for the effects of general relativity?

什么是等效原理?为什么它在寻找广义相对论效应的探索中很重要?

What is the difference between special relativity and general relativity?

狭义相对论与广义相对论有什么区别?

What experiments are cited to support the ideas of general relativity?

有哪些实验被引用以支持广义相对论的观点?

What is meant by gravitational red shift? Has it been observed?

什么是引力红移?它是否被观测到?

What ideas from relativity suggest the existence of black holes?

相对论中哪些观念暗示了黑洞的存在?
*Ideas of relativity

*Michelson- Morley experiment

*Aberration of starlight

*Double star images

*Relativity concepts

*Speed limit

*Relativistic mass

*Length contraction

*Time dilation

*Muon experiment

*Einstein velocity addition

*Galilean transformation

*Lorentz transformation

*Momentum of light

*Mass of photon?

*Cambridge example

*E=mc2

*Relativistic kinetic energy

*Principle of equivalence

*General relativity

*Advance of perihelion of Mercury

*Bending of starlight

*Gravitational red shift

*Gravitational time dilation.

*Red shift examples

*Black holes

*Cygnus X-1

* 相对性观念 * 迈克尔逊-莫雷实验 * 星光光行差 * 双星图像 * 相对性概念 * 光速限制 * 相对论质量 * 长度收缩 * 时间膨胀 * muon实验 * 爱因斯坦速度叠加 * 伽利略变换 * 洛伦兹变换 * 光的动量 * 光子的质量? * 哥伦比亚例子 * E=mc² * 相对论动能 * 等效原理 * 广义相对论 * 水星近日点进动 * 星光偏折 * 引力红移 * 引力时间膨胀 * 红移例子 * 黑洞 * 天琴座X-1
Index
索引
  HyperPhysics*****Physics 7120
HyperPhysics ***** 物理学 7120
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