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What is meant by "blackbody radiation"?
‘黑体辐射’指的是什么？
How did Rayleigh and Jeans come up with the number of modes which could exist in a cavity as a function of frequency?
瑞利和能斯特是如何根据频率确定腔体内可存在的模式数的？
What is meant by the "ultraviolet catastrophe"?
‘紫外灾难’指的是什么？
How did the Planck hypothesis avoid the ultraviolet catastrophe?
普朗克假设是如何避免紫外灾难的？
Laws, laws, laws! What are the Stefan-Boltzmann Law and Wien's Law good for?
定律、定律、定律！斯特藩-玻尔兹曼定律和维恩定律有什么用处？
What do you mean by "3K background radiation"? What is it that is at 3K? What do we learn from the 3K background?
你所说的‘3K背景辐射’是什么意思？什么物质的温度是3K？我们从3K背景辐射中得到了什么启示？
Describe the critical features of the photoelectric effect experiment which made it so important in changing our understanding of physics.
描述光电效应实验的关键特征，说明它为何对改变我们对物理学的理解如此重要。
What was the Franck-Hertz experiment and why did it merit a Nobel Prize?
什么是弗兰克-赫兹实验，为什么它值得获得诺贝尔奖？
How do you calculated the wavelengths for the transitions to the n=2 level of hydrogen? Why are the wavelengths for deuterium slightly different?
如何计算氢原子跃迁到n=2电平的波长？为什么氘原子的波长略有不同？
x-rays from an x-ray machine are described as either "brehmstrahlung" or "characteristic x-rays". How are they different in nature and origin?
X射线机产生的X射线被描述为 either "轫致辐射" 或 "特征X射线"。它们在本质和起源上有什么不同？
What is Bragg scattering and what do we learn from it?
布拉格散射是什么，我们从中学到了什么？
Homework set #3
第三套作业 |