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科學好好聽

〈EP.21|美麗的極光〉

20 May 2025

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本節目提到,極光是自然界三大奇景之一,形成於南北極附近高層大氣,高度約一百至兩百公里。其形成與太陽風活動密切相關,太陽風中的帶電粒子受地磁影響,進入兩極周圍,與大氣產生反應形成極光。太陽活動有約十一年的週期,活躍期(極大期)伴隨太陽黑子和閃焰現象,閃焰釋放大量電磁波和帶電粒子,可能影響地球磁場、無線電通訊,甚至引發極光風暴和太陽磁暴。太陽的大氣由色球層和日冕組成,日冕溫度高達一百萬度以上。太陽活動週期與地球氣候變化有關,黑子多的極大期地球較溫暖,黑子少的極小期則較寒冷。 --- Music from #Uppbeat (free for Creators!): https://uppbeat.io/t/augustine/happy-thoughts (https://click.pstmrk.it/3s/uppbeat.io%2Ft%2Faugustine%2Fhappy-thoughts/vZub/Mhq9AQ/AQ/9a81cc98-33e3-4393-988c-e260893fbecf/4/dtHb1EMCam) License code: 8OVD4G7T97U9LV7C Music from #Uppbeat (free for Creators!): https://uppbeat.io/t/augustine/morning-delight (https://click.pstmrk.it/3s/uppbeat.io%2Ft%2Faugustine%2Fmorning-delight/vZub/Xxq9AQ/AQ/ca281cb2-e180-44ce-940b-77e13433f497/4/LsEyUh3NZJ) License code: TWE91SVFFA9Q2WDW -- Hosting provided by SoundOn

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