upside down rainbow...

Elizabeth Lombard (@LizzieLombard) tweetou às 8:57 Depois do meio-dia on qui, Jan 17, 2013: An upside down rainbow exists!! #physics #nerdalert Weird rainbows| Explore | http://t.co/Yjzldnvi: http://t.co/u3aE4mNh (https://twitter.com/LizzieLombard/status/292012769585283073) Baixe o aplicativo oficial do Twitter em https://twitter.com/download

http://www.physics.org/article-questions.asp?id=58#.UPhi_CLqtlU.twitter