朝、講堂を見上げたところです。空気が澄んでいます。This is the lecture hall looking up from the below in this morning. You can feel clear air because of radiational cooling phenomenon.
![](https://shizutani.jp/wp-content/uploads/2019/01/IMGP8665_stfws-scaled.jpg)
朝、講堂を見上げたところです。空気が澄んでいます。This is the lecture hall looking up from the below in this morning. You can feel clear air because of radiational cooling phenomenon.