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51问答网 > 手机信号是不是短波，手机信号的电磁波传播需和介质有没有关系？

手机信号是不是短波，手机信号的电磁波传播需和介质有没有关系？

2025-04-05 17:23:00

推荐回答（1个）

回答1：

短波波长是100m与10m之间，超短波波长是10m与1m之间，而手机信号波长在33cm，因此手机通信无线信号的波长是非常短的。
手机信号的电磁波传播和介质有关系。电磁波传播需要媒质，目前主要是通过空气，但是空气中水分子含量不同，电磁波传播也不同。水分子越多，传播也越近，衰耗约大。

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