Description: 當19世紀的物理學家在描述電磁現象時發現，即使在附近沒有電荷的情況下，電場和磁場也能以光速在空間傳播。這些波被稱為電磁波或電磁輻射。基本電磁波可根據其波長進行分類，由此產生的電磁波譜從較短波長到較長波長包括：伽馬射線、X射線、紫外線、可見光、紅外線、亞毫米波和射電波（包括毫米波/微波）。來自遙遠天體的電磁輻射是天文學家了解這些天體的最重要的信息來源。

Related Terms:

• 電磁力
• 伽馬射線
• 紅外線（IR）
• 光
• 微波輻射
• 紫外線（UV）
• 可見光譜
• 亞毫米波天文學
• X射線

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

This is an automated transliteration of the simplified Chinese translation of this term

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