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Hi Martin,

I developed a show called "Get in Gear" when I was at the Franklin
Institute. We focused on the basic physics behind why protective gear works.
Hard surfaces reduce the pressure of the impact by spreading it over a
larger area. (bed of nails) Soft surfaces increase the time of impact.
(Slingshot an egg at over 80mph into a sheet) The egg in the sheet was not
always successful adding to the drama of the situation.  It tended to be
that the launcher was some how at fault when it failed not the egg.  So you
might try an air cannon with wadding or some other exciting way to
accelerate the egg.

Mike

 


On 5/24/07 9:20 AM, "martin weiss" <[log in to unmask]> wrote:

> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related institutions.
> *****************************************************************************
> 
> We are preparing an exhibit (part of a series of
> demonstrations which we bring to visitors on carts) focusing on new
> materials used in in sports equipment especially protective sports
> gear (eg, batting, football, bicycling helmets).
> 
> I'd be interested in hearing about approaches you have used
> to enlighten your visitors  about the protective nature of these
> materials-exhibits, demonstrations. . .?-especially due to the
> special nature of the materials.
> 
> On-line or off-line and I will summarize.
> 
> Cheers,
> 
> Martin

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