感觉迷失了HSC物理模块7：光的本质？
Don’t sweat it, we’re here to help!
This topic is all about what makes our world brighter every day – light! Whether we get it from the sun, from electrical devices around us or from this very screen you’re reading this article on, light is everywhere and it’s important you know how it works.
In this article, we’ll break down each of the inquiry questions for you, talk you through changes from the old Module 7, as well as tips to getting a Band 6 in this topic!
So, what are you waiting for? Let’s jump right in!
从旧模块中的更改
What’s there to Learn in HSC Physics Module 7?
Overview of HSC Physics Module 7
Inquiry Question #1
Inquiry Question #2
Inquiry Question #3
Inquiry Question 4
How to get a Band 6 in HSC Physics Module 7
从旧模块中的更改
This topic is a combination of topics from the old syllabus (Space and Ideas to Implementation).
The bulk of this topic is based on the nature of light discussed through the Photoelectric Effect and Black Body Radiation features of the old Topic 3. However, Einstein’s equations make a large appearance as we dive into Relativity at the back end of this topic from the previous Topic 1.
此外，与大多数物理学教学大纲一样，新教学大纲的本主题中还有更多关于深度的关注，包括衍射光栅，光线和牛顿的普通法律的平面极化。
What’s there to Learn in HSC Physics Module 7?
Let’s enlighten you by showing what there is to learn in this new topic;
- 你散步了记忆道，讨论了电磁理论
- You enjoy the classics, such as the original wave model of light
- You look at how we use light, in the form of spectra, to investigate other areas of science such as astronomy.
- You begin to bend your mind, as we discuss the quantum area of light and how light has a dual personality
- 最后，我们将课程与最重要的相对论的令人惊讶的话题括起来，因为时间，质量和长度都以非常高的速度表现不同。
Overview of HSC Physics Module 7
Inquiry Question 1: What is Light?
Firstly, you look back at the history of light and how it has been looked at.
您可以查看Maxwell如何为电磁波以及这些波的贡献电力和磁力如何以恒定的速度，光速，在真空中的速度。
您讨论了在旅行方向上彼此彼此垂直振动的电气和磁波的方式，以及发送和接收无线电波的不同仪器。
You recount the classical ways of how we determined the constancy of the speed of light and we also look at the usefulness of light in identifying elements and through identifying the colour, density and surface temperature of stars through the use of spectroscopy.
询问问题2：有什么证据支持光明的典型波模型以及可以使用此模型进行预测的哪些预测？
Next, you consider the wave nature of light, how we have always considered it in classical physics.
You discover how diffraction occurs and we measure quantitatively the phenomenon of interference through using light travelling through a double slit apparatus and through diffraction gratings.
我们继续使用Netwon和Hyguen的定律来调查光线如何振动向上和向下垂直于旅行方向振动。
You then look at Malus’ Law involving the plane polarisation of light. This uses the relationship Intensity = Maximum Intensity x cos^2(theta) to describe the significance of polarisation in developing a model of light.
We see that when light in the form of a beam is passed through a polariser, the intensity of the light changes depending on the angle the polariser is positioned at in relation to the angle that produces maximum intensity.
Inquiry Question 3: What evidence supports the particle model of light and what are the implications of this evidence for the development of the quantum model of light?
Continuing, you dive into the mind-bending world of the quantum model of light, resulting from the particle-like features of light.
You see how Planck determined that the energy from light is proportional to its frequency and how his work led to Einstein determining that light was made of packets of energy.
我们还讨论了Wein的定律与峰值发生在黑色身体辐射图中。
You also look at the photoelectric effect to demonstrate inconsistencies in what occurs with the transfer of energy.
这证实了爱因斯坦的假设，因为这些电子具有与普朗克 - 爱因斯坦方程有关的一致动能，而不是释放所有不同能量的电子。
询问问题4：光线的行为如何影响时间，空间和物质的概念？
这是主题突破了古典物理障碍的地方。
You look at how time slows, length contracts and how mass increases as we travel at speeds close to the speed of light.You also notice experiments where these effects have been confirmed.
Length contraction is confirmed by cosmic muons, time dilation is confirmed through the atomic clocks of the Hafele-Keating experiment and particle accelerators see more and more energy needed to accelerate a heavier and heavier proton.
如何在HSC物理模块7中获取频段6：光的性质
Tip #1: Prepare to Think Differently
This topic in particular moves away from classical physics of what you have learnt so far.
准备好以不同的方式思考，以光有多种性质以及如何在所有速度下恒定，光线（在真空中）
Tip #2: All or Nothing
量化能量的概念很难包围你的头部。当能量被转移时，只传递所有或没有能量，从来都不是一部分能量“包”。
这就是为什么最大动能是恒定的depending on the wavelength of light used in the photoelectric effect and the work function of the metal used.
This energy also has to be positive and hence not all wavelengths of light eject electrons.
提示＃3：更长的时间，较短长度，较大的质量
Relativity is another mind-boggling area of this topic.
如果您记得有一些示例，其中3个效果发生以及如何重新排列这些方程式，则应将标记作为相对性不会出现。
And that wraps up our guide to HSC Physics Module 7: the Nature of Light – good luck!
You can also check out our other HSC Physics guides below:
- HSC物理模块5：高级机械指南
- HSC Physics Module 6: Electromagnetism Guide
- HSC Physics Module 8: From the Universe to the Atom Guide
Looking for some extra help with HSC Physics?
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Sean Stephen2018年毕业于2018年，atar为97.1，目前正在研究联合国UNSW的精算学习/商业学士/学士学位学士学位。从2019年智能艺术开始，beplay体育官方Sean在资源设计，创新和博客团队中工作，以支持他们在整个HSC中的数千名学生。当远离学习时，肖恩享受从电子游戏到电视，音乐和电影的一切流行文化。
