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cannedtuna@lemmy.world to Science Memes@mander.xyzEnglish · 2 个月前

I must con(FeS₂), this sparked a laugh

lemmy.world

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I must con(FeS₂), this sparked a laugh

lemmy.world

cannedtuna@lemmy.world to Science Memes@mander.xyzEnglish · 2 个月前
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  • Mr. Semi@lemmy.world
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    2 个月前

    no science teacher would ever say that.

    Careful with those absolute statements there buddy. I was told the same by a teacher, who challenged the class to come up with natural examples of either straight lines or perfect circles. He talked about how such things cannot exist because at high enough resolution/magnification there will always be interruptions.

    Your own example of light traveling in straight lines doesn’t account for the fact that photons are waves and absolutely do not travel in straight lines.

    • 🍉 DrRedOctopus 🐙🍉@lemmy.world
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      2 个月前

      they do tavel in a perfectly straight line though.

      space time is curved, not the light path.

      • KubeRoot@discuss.tchncs.de
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        2 个月前

        What about the fact that light bends around corners? Notably the interference pattern when shining light through a slit?

        • 🍉 DrRedOctopus 🐙🍉@lemmy.world
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          2 个月前

          Stop being mean to light by making it choose what slits to go through.

          it has choice anxiety.

          • KubeRoot@discuss.tchncs.de
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            2 个月前

            Ah, sorry for the confusion, I was referring to the single-slit experiment, I wasn’t giving light a choice.

            • 🍉 DrRedOctopus 🐙🍉@lemmy.world
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              2 个月前

              that’s worse :(

              let light be free

      • SystemDisc@feddit.org
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        2 个月前

        False because they are affected by gravity, even if ever so slightly

        • Maldreamer@lemmy.world
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          2 个月前

          But isn’t the gravity bending the space, so the light itself is travelling straight but seems curved to the observer?

          • SystemDisc@feddit.org
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            2 个月前

            Hmm, I’m not actually sure. Are we also ignoring refraction and reflection because the path is straight between those? If we’re talking discrete photons, you may be correct about each segment in its path being perfectly straight, but I’m not a theoretical physicist.

            • 🍉 DrRedOctopus 🐙🍉@lemmy.world
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              2 个月前

              “through vacuum”

        • 🍉 DrRedOctopus 🐙🍉@lemmy.world
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          2 个月前

          gravity isn’t a force, it’s the curvature of space-time itself.

          light follows a perfectly straight line through vacuum. the space itself isn’t straight.

          like drawing a straight line on a flat paper, if you roll the paper, that line is still straight within it’s medium.

          Newtonian gravity has been replaced by General relativity, and has been proven to be the correct model (at least more correct than Newtonian gravity).

          • SystemDisc@feddit.org
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            2 个月前

            Makes sense to me. Thanks

    • nehal3m@lemmy.zip
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      2 个月前

      Only a Sith!

    • Klear@piefed.world
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      2 个月前

      In that case that Pyrite proves nothing.

    • Derpenheim@lemmy.zip
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      2 个月前

      But photons are also particles.

    • PapaStevesy@lemmy.world
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      2 个月前

      It travels in a straight line, just not in every dimension. Look at a waveform from above, it’s a straight line.

      • agamemnonymous@sh.itjust.works
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        2 个月前

        Uh…

        • PapaStevesy@lemmy.world
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          2 个月前

          Oh sure, bring evidence into it 🙄 lol. Um, how about sound waves?

          • agamemnonymous@sh.itjust.works
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            2 个月前

            Sound waves are compressive waves, they radiate spherically (in principle, turbulence in the medium is going to make them slightly irregular)

            • PapaStevesy@lemmy.world
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              2 个月前

              Neat!

      • some_kind_of_guy@lemmy.world
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        2 个月前

        Astonished

      • imgcat@lemmy.ml
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        2 个月前

        that’s just silly

        • PapaStevesy@lemmy.world
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          2 个月前

          Is it inaccurate?

          • imgcat@lemmy.ml
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            23 天前

            plain wrong

          • PapaStevesy@lemmy.world
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            2 个月前

            Apparently it is

    • Kangae_Hishiryo@scribe.disroot.org
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      2 个月前

      Photons are both particles and waves, not only waves (that’s because of the wave-particle duality discovered by/after Einstein’s theories).

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