• rapchee@lemmy.world
    link
    fedilink
    English
    arrow-up
    3
    ·
    21 days ago

    still, there are two polarities, so if you put two on top it completely blocks the light, but if you put a third, it lets one polarity through again
    it makes no intuitive sense, because quantum (but i’ve seen it happen irl in high school)