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Cake day: September 27th, 2023

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  • Radioactive materials have a half-life, which means every X number of days/months/years, the material will have decayed to half its initial size. This continually happens, so while something might start at say 100g and have a 10 day half life, 10 days later it is 50g, 10 days later 25g, 10 days later 12.5g, 10 days later 6.25g, etc. This will continue forever until there is literally one atom left, at which point it is random chance when the atom would decay.

    Voyager launched with 3 Radioisotope Thermoelectric Generators, each with 4.5kg of Pu238 which generated 157 watts of usable electric power at launch, for a total of 471 watts

    It will be half that in 87.7 years (235W) . And half that (117W) in another 87.7.

    The problem comes from the amount of power necessary to run the craft and it’s radio. While the generators might continue to run for practically forever, at some point they just don’t produce enough power to keep everything working. Its official mission is expected to end in 2025, but it’s generators are expected to be able to power it’s instruments for another ~10 years













  • I think you’re missing the point the comic is going for.

    Fundamentally, mathematics is built off axioms. An axiom is an incredibly simple statement that presumably true within the system they define, such as “the quantity one exists” or “the operation addition exists”, then uses these axioms to build mathematical proofs starting from them to draw further logical conclusions, such as 1 + 1 = 2.

    If you continue following these axioms to their logical conclusions, and use those conclusions to follow to even further logical conclusions, you essentially end up with the entire field of mathematics.

    Then if you take those mathematical conclusions and apply them to the physical world, you end up with the entire field of physics.

    Then if you take the entire field of physics and apply it to molecular interactions, you end up with chemistry, and if you take all of chemistry and apply it to biological organisms, you end up with all of biology.

    I’m not trying to say you’re wrong about people arguing in bad faith or with not enough evidence to make their untrue claims. But this is just a web comic. It’s just making a joke that if we trace everything we know back through all our fields of studies, we end up with the incredibly simple origin points of mathematics.

    It’s funny.

    Laugh.