In Carnot's theory, lost heat was absolutely lost but Thomson contended that it was "lost to man irrecoverably; but not lost in the material world".
在卡诺的理论中，热损失是完全的丢失，但汤姆森认为，这是“对人类而言无可挽回地失去了，但对物质世界而言并没有失去”。