Red Cloudbow over Delaware


What kind of rainbow is this? In this case, no rain was involved -- what is pictured is actually a red cloudbow. The unusual sky arc was spotted last month during sunset in Rehoboth Beach, Delaware, USA. When the photographer realized that what he was seeing was extraordinary, he captured it with the only camera available -- a cell phone. Clouds are made of water droplets, and in a cloudbow a cloud-droplet group reflects back light from the bright Sun (or Moon) on the opposite side of the sky. Similar phenomena include fogbows and airplane glories. Here, the red color was caused by atmospheric air preferentially scattering away blue light -- which simultaneously makes most of the sky appear blue. A careful inspection reveals a supernumery bow just inside the outermost arc, a bow caused by quantum diffraction. via NASA https://ift.tt/2JwjLPn

댓글

이 블로그의 인기 게시물

iOS 아이폰용 앱 개발을 위한 디자인시, 디자이너가 참고 해볼만한 사항들

스냅드래곤 기반 크롬북, ‘트로그도어’ 개발 중

[펌] 구글 마켓에 있는 apk를 PC로 바로 다운받자