Which snack were you referring to?
Nina Thayer
Snacktalk Moderator
>
> an aluminum , silver , or gold butter knife will not work as they have
> very low permeability .
> The butter knife should be tested separately to show that it is simple
> iron with a high permeability , then the rest of the experiment will
> proceed as you have described.
>
> martin shenven
>
>
>
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