Description: 這個術語可以指三種不同的效應：多普勒紅移、宇宙學紅移或引力紅移。多普勒紅移與藍移相反；在紅移的情況下，發射電磁輻射的源遠離觀察者，因此電磁輻射被拉伸到更長（更紅）的波長。這類似於聲波中的多普勒效應。宇宙學紅移是源發射的電磁輻射因空間的物理膨脹而被拉伸到更長波長的結果，與相對運動引起的多普勒紅移不同。引力紅移指的是源發出的電磁輻射被拉伸到更長波長的效應，或者說光子在試圖離開引力更強的區域（引力井）時失去能量。

Related Terms:

• 多普勒效應
• 電磁輻射
• 廣義相對論
• 藍移

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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