time travel (reddthat.com)
submitted 5 months ago by to c/comicstrips@lemmy.world
 
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[–] 2 points 5 months ago* (3 children)

Lodestone carved into a cylinder in a wooden housing with copper wire coiled around it. Batteries would be copper and zinc bar in vinegar in a clay pot that holds them apart from each other. It isn't much but it's enough to start moving towards water wheels

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  • [–] 1 point 5 months ago (2 children)

    Can you make copper wire and zinc bars?

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