what is a ribbon microphone?

How about have a microphone and a red ribbon and tie up the ribbon over the microphone to a ribbon microphone..Lol just kidding. For the information: what is a ribbon microphone? As according to my source it is a very popular call into the Music and recording, this instrument uses to make the voices much realistic and more nice to be heard during broadcasting. Oh my, I want this ribbon microphone for my voice lessons. Lol I mean for our Videoke sessions.