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Cake day: August 13th, 2023

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  • Arrkk@lemmy.worldtoScience Memes@mander.xyzMythbusters
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    3 days ago

    The key insight is that the force a plane uses to move is independent of the ground, because planes push on the air, not the ground.

    Imagine you put a ball on a treadmill and turn it on, what happens? The ball starts to spin and move with the treadmill. Now take your hand and push the ball backwards against the motion of the treadmill, and the ball easily moves in that direction. The force your hand put on the ball is exactly what planes do, since they push on something other than the ground (the treadmill) they have no problem moving, no matter how fast the treadmill is moving.


  • Arrkk@lemmy.worldtoScience Memes@mander.xyzMythbusters
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    3 days ago

    Plane on a treadmill is really interesting because if you understand how planes work its so obvious what will happen you don’t need to test it. Planes move on the ground by running their engines, which push against the air, the wheels provide zero motive force. It’s also why planes need tugs to move away from the gate, you can’t run the engines in reverse. Planes are not cars, but people tend to assume the thing they don’t understand works like the thing they do understand, and refuse to believe their hasty assumption is wrong even when told directly their hasty assumption is wrong.





  • For various math reasons you only get consistent systems with 2^n dimensions, so after complex you get quaternions with 4, then the next one that works is 8, then 16, etc. They become less useful because you lose various useful features, like you lose commutabiliy with quaternions (eg ab != ba), and every time you double you lose more things.












  • There are plenty of reasonable definitions of religion that would apply to atheism, but even that aside, it’s a-theism, not a-religionism, it’s a rejection of theism, and while many atheists do come at the topic from a generic anti-religion angle, there are many atheistic religions, like The Satanic Temple, who are doing fantastic legal work as a officially recognized religion to fight the current right wing legal nastiness like the abortion ban in Texas by arguing they have religious freedom to preform abortions.

    So you’re right in the strictest sense that the philosophy of atheism is not de-facto a religion, but next tmme I would recommend making an actual argument rather than incoherent swearing at someone with a mildly spicy take, you’re making us all look bad.