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阴极射线管的原理是什么

更新时间: 2020-09-22 00:00:00     

阴极射线管是从有名的盖斯勒管发展起来的。阴极射线管有两个电极:阴极与阳极。管内被抽成了接近真空状态,当向两级与感应线圈连接加上高压电时,两级之间形成强大的电场,可以加速电子,然后阴极就可以向阳极发射阴极射线了。阴极射线打在管内稀薄空气上可以发出神奇的光现象,这就是无声的电放射。

关键词: 阴极射线 原理 什么

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