Silver, a very good metal with high conductivity is one of the whitest.
The pickle especially will have a high conductivity because of the salt content and the vinegar.
Primary factors usually include high electrical conductivity, and low density.
This interest is due to the rediscovery of high electrical conductivity.
We have had a problem for a long period of time now on high conductivity.
Now we'd never had a problem before with high conductivity.
A region of higher electrical conductivity may have water or galena.
Metal is especially dangerous since it has a high thermal conductivity.
Copper, on the other hand, has a high conductivity and so is poor at producing sparks.
It is also fairly inexpensive, but does not have a very high thermal conductivity.