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电磁波的话和我们的生活密切相关。 1. 电磁波与医学 电磁波首先对医学的贡献，利用X射线可以把骨骼的结构准确看出来。也可以利用X射线进行照相。现在也可以利用它的反射信号的不同再现彩色的图像。电磁波与医学的应用非常广。 X射线是波长介于紫外线和γ射线间的电磁辐射。 X射线是一种波长很短的电磁辐射， 其波长约为(20～0.06)×10-8厘米之间。 由德国物理学家W.K.伦琴于1895年发现， 故又称伦琴射线。

无线通信的时代始于两名欧洲的科学家詹姆斯·克拉克·麦克斯韦和海因里希·鲁道夫·赫兹的发现。

电磁辐射按照频率分类， 从低频率到高频率， 包括有无线电波、 微波、 红外线、 可见光、 紫外光、 X-射线和伽马射线等等。 人眼可接收到的电磁辐射，波长大约在380至780纳米之间， 称为可见光。可以根据功能对其进行分类，不同的波长对应着我们周围不同的电磁现象，频率很低的时候，波长相对比较长，对应的物体也是一个比较大的物体。随着频率的升高，我们周围的物体能够观测到的物体也越来越小。能够看到的东西也越来越精细。

了解那些和电磁有关，逐步体会身边的电磁现象 电磁波和什么有关 阳光 阳光实际上含有非常丰富的电磁波波谱。 闪电 闪电发生的时候，向周围辐射了非常宽范围的电磁波波谱。 手机信号 要完成手机正常的通信，必然也包含了电磁波的支持。 电脑辐射 电磁辐射给我们带来了各种各样的方便，同时也会给我们人体带来有害的作用。比如说，操作电脑的时候，电脑的屏幕就会辐射电磁波。电磁波照射如果超过一定的剂量，对我们的生活也是有害的。

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