Description: 絕對零度是開爾文溫標的零點，相當於攝氏零下 273.15 度和華氏零下 459.67 度。開爾文溫標對零點的選擇取決於基礎物理學：對於一個經典系統，溫度等於絕對零度對應於所有粒子都處於完全靜止狀態，每個粒子的動能都為零。而在現實世界中，量子理論的基本效應意味著這種完全靜止的狀態永遠無法達到。

在描述一般系統及其進行熱量和其他形式能量交換的熱力學語言中，溫度等於絕對零度的理想化系統是一個完全無法從中提取任何熱量的系統。實際上，要使一個系統達到這種理想狀態是不可能的。這就是所謂的熱力學第三定律，也稱為能斯特定理：我們可以無限接近絕對零度，但永遠無法達到它。

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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