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Joined 9 months ago
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Cake day: August 5th, 2024

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  • You aren’t so far away from the truth!

    To make a battery you need to have something that holds negative electrical charge and something with a positive electrical charge and both need to be able to change to a different state when you use it or reverse that change when you charge it.

    Lithium is the lightest and smallest metal, meaning for the same size and electrical charge, your battery will weigh less.

    Then you just need to find ways to make two kind of lithium compounds which have different electrical charge and can be changed between two states.

    And if it doesn’t explode when a child throws their battery powered bear on the ground, that would also be a good characteristic.











  • Both from Germany:

    I remember that in my high school time many in my year went to plasma donation as often as it was allowed to collect the compensation. So while you are right that is legally never called payment, people with a need for cash for sure sell their plasma for money.

    Oh and in the public sector there is or at least was in the past also the possibility for donating blood and you get the 2 hours or so for that paid as normal. So the government donated the money for a good course.


  • They didn’t say that, but the other commenter still speaks about a point that also caught my eye:

    It doesn’t matter if donating blood or plasma is able to be longer stored. When you need one of them, you can’t substitute with the other. So the medical area still needs both. So you still need people donating both. If a medical institution is telling me they only collect plasma, I would question their motives, because both are needed for helping people.

    Maybe the donating place just gave the short explanation and they meant, that for blood donations there are other better places, but it could also mean, they don’t earn enough money with that. And THAT is I think what the other commenter meant with their admittedly short comment.