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.
farmingdale-observer.com
Storing renewable energy sustainably and efficiently is one of the major challenges of our time. A team of German researchers is proposing a revolutionary solution: concrete spheres immersed in the ocean floor. Their potential is such that California is preparing to test a large-scale prototype. A simple, ingenious concept The…
  • @towerful@programming.devEnglish
    6•2 months ago

    Can you calculate the weight of a sphere of 9 m of displaced water ?
    No ? Well, it is 382 tons.

    Metric strikes again.
    I bet you didn’t even have to convert through football fields, elephants, or olympic sized swimming pools!

    • @A_A@lemmy.worldEnglish
      1•2 months ago

      indeed i made a very simplified calculation not taking into account increase density of salted water nor increased density because of compressibility of water at 500 m deep. Basically i took 1m³(water) is 1 (metric) ton.