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How to harvest water passivley?

I think all the methods you list can be run using only the heat of the sun, and no other external power source. The general term for this type of water condenser is a solar still. If you search for &...
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Pressure difference between two connected bodies of water

The fact that water "keeps flowing" into the jacuzzi implies that water is somehow being removed from the jacuzzi, or else it would eventually wind up with a higher water level than the pool,...
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Why do we feel weightlessness in water but not on land?

Dale's answer is an excellent breakdown, but there is still an important component missing. Notably: why is the experience so different from lying on a highly contouring mattress in air? ...
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