Original posting first, responses afterwards: Thanks to everybody.
Jacob Havkrog

> Dear list.
> I'm looking for a picture of an experiement I've been told
> about but I don't
> know where it comes from.
> It's a man wearing a helmet who's being hit on top of the
> helmet with a
> hammer. The picture is taken with a special technique so the
> shockwaves of
> the impact runnig down the body are clearly visible.
> Does anybody know of such a technique ? Does it have a name
> so I can find
> references ? Do you know of that or similar pictures available on the
> internet?
> I'm researching into body vibrations and I think such
> pictures could be
> valuable.
> Do you know of anybody working in such a direction ?
> Any pointer towards visualization of body vibrations will be most
> appreciated !!
> Thanks for any help
> Jacob Havkrog
__________________________________________________ _______________________


I have been working in the area of whole-body vibration for a number of
years and the only technique for visualization that I have seen
demonstrated was by David Wilder at Iowa. His homepage is:


I hope that helps.

Dr Neil J Mansfield
Department of Human Sciences
Loughborough University
Loughborough LE11 3TU, U.K.
tel: +44 (0)1509 228483
fax: +44 (0)1509 223940

__________________________________________________ _______________________

I have not seen the picture you describe, but your description is
reminiscent of a technique called contour photography. The photos taken in
contour photography appear to overlay a contour map upon surface of the
body. I don't know if this would record vibration. If this seems
promising, I can find a little more information for you.

Richard Johnson

__________________________________________________ _______________________


I remember watching a video series entitled Science and Music in which a
technique similar to what you describe was used to show how vibrations in an
instrument (violin, guitar, etc..) can travel through the body. Check the
following URL for specific info -- be warned, though, that this was a 5 part
series, and the segment I refer to occupies about 1 minute out of 5 hours of


- Mark
Mark Musolino
Human Movement & Balance Laboratory
Department of Otolaryngology, University of Pittsburgh
Eye & Ear Institute 128, 200 Lothrop St., Pittsburgh, PA 15213
(412) 647-8069
(412) 647-0108 fax

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