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Joined 2 years ago
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Cake day: July 26th, 2023

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  • Nobody will remove water from ambient air in relevant amounts. Roughly 0.5 % of air is water vapor, a total of something like 10’000 km³ liquid water. This is replaced (residence time) about once every 10 days, so roughly 1’000 km³ daily.

    Say we extract 10 km³ (10’000’000 m³) daily, enough for roughly 10 million people (including all industry, zero recycling of the water etc.). By that time you deal with 1 % of earths atmosphere every day. May I remind everyone how absurdly costly in any conceivable way that would be? You would rather lay a few pipes and purify sea water at a tiny(!) fraction of the cost.






  • Are we missing some zeros here? So one to a few hours of testing, that is it? So I assume the sensors simply failed completely after that, why else would they not test it longer or withhold the results? Quote:

    Researchers tested them at different bending speeds:

    838.9 mV at 100 bends/hour 856.7 mV at 200 bends/hour 852.6 mV at 400 bends/hour

    Even after hundreds of cycles, the signal stayed strong, proving these sensors can handle repetitive movement without breaking down.

    This kind of reliability is huge for prosthetic limbs, fitness trackers, and robotic arms, where precision and durability are non-negotiable.









  • Happy child free, may I ask how old you are roughly? Because to me it seems that this number and that happiness correlate strongly inversely. People are more and more lonely. Less family, fewer siblings, no children, …

    There sure are people of any age that are happy without children (or generally with or without anything). But since you mention this and me seeing that correlation: I have to ask. If you are 30 that is essential meaningless, like saying you do not care about pensions. If you are 60 both statements carry a lot more weight.