Water balloons and High Speed Cameras

[Kyrie Eleison]

How cool is this?

 

[Perham1]

Have you seen any of Harold Edgerton's work? He was with MIT and did his stuff about, I don't know exactly, 50 years ago (or more?). He showed a bullet cutting through a playing card.
The Link

 

[Hornin Hong Kong]

to answer the OP - pretty cool