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# Exp19:双光栅检测微弱振动 | ||
# Exp19:双光栅检测微弱振动 | ||
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| 学时 | 实验难度 | 实验报告难度 | | ||
|------|---------|------------| | ||
| 2 | ⭐⭐ | ⭐ | | ||
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## 实验描述 | ||
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本实验中两束光会形成光拍,通过光电转换器被示波器捕获,在屏幕上形成拍的图像;核心要点就是读这个拍的半个周期内波数。 | ||
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因此需要掌握示波器的用法,尤其是缩放功能(按示波器 `zoom` 按钮,再调节旋钮即可缩放)——如果没有缩放,所有的波峰挤在一起,会让读数异常困难。 | ||
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> 文 /[@IcyDesert](https://github.com/IcyDesert), 2024.9 | ||
## 关于实验报告 | ||
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数据处理只需要做个除法,最终的报告只用画个图,含金量不必多说。 | ||
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> 文 /[@IcyDesert](https://github.com/IcyDesert), 2024.9 |