What effect does long term vacuum have on materials.

Subject: What effect does long term vacuum have on materials.

Date: Sun Sep 19 09:23:14 2004
Posted by Charles
Grade level: nonaligned School: No school entered.
City: Evensville State/Province: TN Country: United States
Area of science: Physics
ID: 1095603794.Ph

Message:


Materials such as Cardboard, Metals, and Plastics.  Example:  Coins are often 
stored in sealed, air tight plastic containers.  What long term effects would 
putting them inside a sealed vacuum have?  Materials inside the vacuum 
container might include paper (envelopes), plastics, metals (silver, copper, 
zinc) and cardboard.  Thank You!

Re: What effect does long term vacuum have on materials.

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