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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)

submitted 3 days ago by [email protected] to c/[email protected]

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[–] [email protected] 14 points 3 days ago (1 children)

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!

[–] [email protected] 3 points 3 days 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.