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Storing energy with concrete? This battery could solve a lot of problems
This is a mechanical battery. It uses energy when it is plentiful to lift blocks of cement by crane. Then used the energy gravity creates when needed when the blocks are lowered.

From what I can tell, a regular lithium battery returns 90% of the electricity it takes in, whereas the mechanical batter returns 85%. While not quite as efficient as a chemical battery, the mechanical battery is much cheaper and easier to create.

And in many areas, it's cheaper to leave the electrical generators running 24/7 even when not needed because it takes more energy to start them up than to let the run. This means there are long periods of time at night when electricity is just going to waste. If these mechanical batteries work as well as they say, this seems like a better way to do things.

Makes me think of a way the pyramids might have been built. Scientists say the Egyptian pyramids can generate electricity and they did have man made waterways wherein the ruins are still in place today though the Egyptians did not have pulleys and wheels.

Kurt, given your engineering background, what do you think? I used to be a draftsman before CAD, so I think it would have been possible.
My wild theory has been "ancient elephants", but there's no evidence of elephants helping build the pyramids. A team of 6-10 elephants could do a lot of tugging and they lived a lot closer than the aliens.

Of the theories I've seen, the most interesting one is that the Great Pyramid has an internal ramp that wraps around the pyramid.  There's some decent evidence supporting this theory and an older pyramid has an internal ramp. But for some reason Egypt won't allow the testing to verify the theory to be done. But if you look at the pyramid you can see some evidence of what might be the ramp from the outside.

This 15 min video describes the best theory I've come across and is part of a longer documentary I watched. I'm getting old...this is from 2012 so this all may have been proven or disapproven since, but anyone really interested in the Great Pyramid should check it out. It explains pretty much everything about how the pyramids were probably built.


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