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Cake day: June 26th, 2023

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  • A persistent assumption about advanced interstellar travel is that engine efficiency is monumentally better to the point that the “tyrrany of the rocket equation” is no longer a factor, and extra mass can be carried without absolutely exploding your fuel requirements into absurdity.

    If adding 10kg of payload didn’t mean also potentially many times more mass of propellant we’d be sending up more robust spacecraft, no question.





  • vithigar@lemmy.catoMemes@lemmy.mlmmmm tasty carbon
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    2 months ago

    I’d argue that Li should be red and Hg should be yellow.

    Elemental mercury in liquid form is fairly safe. It needs to get into your blood in order to be a problem, and even if some does stick to your tongue and get swallowed the digestive absorption is extremely low.