However, in 1974, Hawking applied quantum field theory to the curved spacetime around the event horizon and discovered that black holes can emit thermal radiation, known as Hawking radiation.

• 然而,在1974年,霍金将量子场理论运用到活动视界周围的弯曲时空上而发现黑洞能发出热辐射，就是熟知的霍金辐射。