Brass/bronze Vs. Steel/iron helmets

[Robert Vermaat]

but also, I'm reminded of a TV series here in the states called "Mythbusters" which is a terrific program if I might add - But one episode they were trying to figure out how the ancient (assyrian? babylonian?) clay pot "batteries" worked, and what they could have been used for.
One of the results/theories they discovered is that they could do Metal Electroplating...Which for such "ancient" technology to me sounds really cool and has all sorts of implications....Is there evidence of [Romans] using electroplating? Is it a possible technique they may have had to obtain certain properties in metals?
- remember I don't have much knowlegde in metal stuff, so go easy.
(sorry this is getting a little off topic)

That's the 'Baghdad Battery', supposedly from the Parthian period. And yes, it's been tested before, after which the testers suggested that museums should have another look at their 'solid gold' ancient objects. hock: