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Glossary term: 黑體輻射

Also known as Blackbody Emission

Description: 黑體輻射是來自理想化物體(黑體)的電磁輻射,該物體吸收落在其上的所有輻射,並以維持熱平衡狀態的速率重新發射輻射。根據已知的定律,黑體輻射的光譜完全由物體的溫度決定。大多數恆星在幾千開爾文的溫度下會發出類似黑體的光。與同步輻射和其他形式的 "非熱 "輻射形成對比。

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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

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

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".

Related Diagrams


三條麯綫,Y 軸為輻射,X 軸為波長。較冷的麯綫峰值較紅和較低

黑體輻射

Caption: 不同溫度黑體的輻射麯綫。x 軸錶示波長,y 軸錶示黑體錶麵每平方米在每個波長下每秒發射的能量。 溫度越高的物體,波長越短,發齣的最大能量光也越藍。盡管圖中最冷的天體發齣的紅光達到峰值,但其他較熱的天體發齣的紅光都比最冷的天體多。
Credit: IAU OAE/Niall Deacon

License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons


三條麯綫,Y 軸為輻射,X 軸為波長。較冷的麯綫峰值較紅和較低

黑體輻射--紫外綫災難

Caption: 不同溫度黑體的輻射麯綫。x 軸錶示波長,y 軸錶示黑體錶麵每平方米在每個波長下每秒發射的能量。 溫度越高的物體,波長越短,發齣的最大能量光也越藍。盡管圖中最冷的天體發齣的紅光達到峰值,但其他較熱的天體發齣的紅光都比最冷的天體多。 虛綫顯示的是現代量子力學之前的經典理論所預測的輻射量。對於任何溫度高於零的黑體,這一預測在較短波長處都趨於無窮大,被稱為 "紫外綫災難"。
Credit: IAU OAE/Niall Deacon

License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons