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Joined 1 year ago
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Cake day: December 14th, 2024

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  • When oxygen from the air passes over small pieces of iron inside the battery, the iron rusts and produces electricity. To recharge the battery, an electric current removes the oxygen from the rust, turning it back into iron

    Every week we can read about some new & exotic chemical processes that can (maybe, hopefully 😇) be used for batteries… but “the iron and the rust”, that is old.

    So: Why haven’t we heard of any iron-rust-batteries before?

    Form’s iron-air batteries are heavier and less efficient than their counterparts; they can only return about 50% to 70% of the energy used to charge them

    Oh. Damn.

    So, that’s why, I guess. 50% sounds terrible.

    almost three times as cheap

    Oops? Now we are in business again? Maybe, hopefully 😇

    I really find it interesting.





  • Dario Amodei […] said he does not want the company’s A.I. to be used to surveil Americans or in autonomous weapons, saying this could “undermine, rather than defend, democratic values.”

    This is absolutely reasonable and I support this position.

    Sam Altman, the chief executive of OpenAI, said in a memo to employees this week that “we have long believed that A.I. should not be used for mass surveillance or autonomous lethal weapons.”

    But I don’t trust this guy who shows regularly that he wants to be the ruler of the whole world by means of his own AI.