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My previous/alt account is yetAnotherUser@feddit.de which will be abandoned soon.

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Cake day: June 1st, 2024

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  • When purchasing new appliances, choose more efficient appliances over less efficient one’s. Replace all your incandescent lightbulbs with LEDs. Limit your use of air conditioning to reasonable temperatures. Choose energy-saving programs for your washing machine and hang your clothes outside to dry when it’s warm instead of using a dryer.

    Stop driving unnecessarily. If there is decent enough public transit, use it instead of a car even if it takes longer. If the distances are short, use a bicycle. Choose food that causes fewer carbon emissions - locally grown vegetables are the best in that regard.

    On its own none of these matter. Combined however they will significantly reduce your emissions. None of these cause significant sacrifices.

    Not only should we ban plastic straws, we should continuously ban more and more plastic. First plastic straws, then plastic bags, then plastic packaging. The systematic change will happen either gradually or spontaneously. I prefer the latter but if the former is all we have it must be encouraged as much as possible.







  • yetAnotherUser@discuss.tchncs.detoScience Memes@mander.xyzWitchcraft
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    25 days ago

    But the first few values are:

    1 + 1/3 + 1/6 + 1/10 + 1/15 + 1/21 + 1/28…

    I really don’t see any pattern there showing why it converges to 2 exactly

    Edit:

    After thinking some more, you could write the sum as:

    (Sum from n=1 to infinity of): 2/(n * (n + 1))

    That sum is smaller than the sum of:

    2 * (1/n2) which converges to π2/3

    So I can see why it converges, just not where to.



  • Well, as much as possible anyway. When considering mass alone, life is quite efficient.

    According to Wolfram Alpha:

    The sun produces 3.8 * 1028 watts.

    A single human produces 104 watts (calculated through the average caloric intake assuming that intake ≈ energy consumption) through heat radiation.

    Therefore:

    1 kg of human converts 1.5 watt into heat.

    1 kg of the sun converts 0.0002 watt into (heat) radiation.

    And while I have nearly no understanding how entropy is calculated, from those values alone it seems like humans produce more entropy per kg than the sun. I’m pretty sure entropy is somewhat related to energy production though.








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