Hi Frank,
Thanks for posting this wonderful series both in this thread and in your other threads.
Images like these that catch nature in the act never cease to amaze and these are
certainly in the tradition of the Father of high speed imaging, the late great
Harold "Doc" Edgerton.
The MIT Edgerton Center web site here -
http://web.mit.edu/Edgerton/
and the Edgerton Digital Collection here -
http://edgerton-digital-collections.org/
which includes a wonderful short 2 minute video that celebrates the legendary Engineer.