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Cake day: June 18th, 2023

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  • I had the opposite. When we learned about magnets in high school, it was pretty much told assuming the atomic and crystalline scale of natural magnets to be a black box. Meanwhile, the instructions on electromagnets gave me enough to go off for me to extend that down to said crystalline and atomic level. So when I stepped to my teachers, claiming I had a theory and enthusiastically explaining that spinning electrons created an electric current, which in turn create magnetic fields at the atomic level, which can then line up with neighbouring ones to become a whole magnet, they responded “yeah, that is exactly how magnets work.”









  • Iron Lynx@lemmy.worldtoScience Memes@mander.xyzshoot for the moon
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    3 months ago

    Counterpoint:

    Orbital semimajor axis of the moon (basically the orbit radius): 384400 km

    Subtract earth’s radius: becomes 378000 km above earth’s surface at mean sea level.

    Moon radius: 1737.4 km

    tan-1(1737.4 / 378000) = 0.26 degrees

    Conclusion: at best, assuming the moon is directly overhead and any glancing contact is a success, you can deviate maximally 0.26 degrees from a dead centre hit to hit the moon.

    Good luck with that.