John Tyndall was born on this day in 1820 and is remembered by many as the man who first explained why the sky is blue. 존 틴달은 1820년에 태어났는데 왜 하늘이 파랗게 보이는지 처음으로 설명한 사람으로서 많은 사람들에게 기억되고 있습니다. This discovery, known as the Tyndall effect, proves the sky’s blue colour results from the..