2017/01/18 |
A Scientist Invented the Cyanometer Just to Measure the Blueness of the Sky
Horace-Bénédict de Saussure wanted to climb a mountain and mark the sky's hue accurately.
SKY 是韓國首爾大學(Seoul National University)、高麗大學(Korea University)和延世大學(Yonsei University)三所著名大學的簡稱。 --來自 維基百科
Horace-Bénédict de Saussure wanted to climb a mountain and mark the sky's hue accurately.