What Is Sono Luminescence?

Sono luminescence is a phenomenon that physicists can't explain quite fully. We were wondering how many people out there had heard of this term and or have any ideas about what it could be. So daniel went out to the internet to ask people, what is sono luminescence? And i'm still looking more volunteers, for people who are willing to answer random physics question without any preparation. If you'd like to participate, please write to me two questions at daniel and horhay dot com.