Description: 在太陽的外層區域，炙熱的氣體流體上升、膨脹並冷卻，隨後下沉。這種對流過程發生在每個大約1500公里寬的獨立單元內。每個單元中央升起的熱物質比邊緣下沉的冷物質更亮，因此形成了中心明亮、邊緣較暗的圖案，稱為米粒。這些米粒是暫時的現象，每個米粒僅持續幾分鐘，隨後便被太陽內部沸騰的對流氣流所擾亂。

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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