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From enrique.sahagun@uam.es:
I'm physicist as well and I have done batteries as well. Too much coincidences
:-).

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From marlo.steed@uleth.ca:

The concept works and I like the image but it would have been improved with a
more realisting texture and background.
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From tomvw87@hotmail.com:
Simple, but not bad.

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From file:
its okay.