Bubbles: The good, the bad and the ugly 

                   Michel Versluis
         Physics of Fluids, University of Twente

In this seminar I would like to introduce you to the fascinating world
of bubbles and jets. We encounter many types of bubbles in daily life,
many of them you see or hear, some of them remain unnoticed. Some are
harmful, some have medical benefits. I will talk on sonoluminescence,
the formation of a light emitting bubble in a sound field, and on the
snapping shrimp, a small but noisy crustecean found in tropical coral
reefs. I will also tell how bubbles disturb ink jet printing and how we
exploit bubbles for diagnostic and therapeutic cardiac imaging. Key to
the examples given here is the understanding of the physics of bubbles
and jets, which we undertake by experimental, numerical and theoretical
means.