正円の虹

Rainbows are actually full circles, typically visible from higher vantage points, such as planes or tall buildings.

📹Fabricio Maciel
pic.twitter.com/euOWTBt84B

— Science girl (@gunsnrosesgirl3) March 27, 2025

高層階からみると虹が正円という話。ブロッケン現象とは違うのかな？