A German Experiment Proved That Simple Concrete Spheres Make Fantastic Batteries. Now, California Plans To Submerge A 9-Meter Diameter Sphere In The Ocean And Is Already Planning Versions Of 30 Meters by Dryfire in c/science@lemmy.world

[-] Dryfire@lemm.ee 14 points 2 days ago

There are 2000 year old Roman concrete piers that are still just hanging out in sea water. So it's possible if you find the right mix.

Dryfire

joined 1 month ago