Glossary term: 射电波
Description: 射电波是电磁波谱中波长最长、频率最低、能量最低的部分。它们的波长最短约为1毫米，对应频率为300千兆赫，波长最长可达数公里，对应频率为兆赫。我们的大气层对这一波段的大部分是透明的，因此可以在地面上架设射电望远镜。
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
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