918
I must con(FeS₂), this sparked a laugh (thelemmy.club)
submitted 3 months ago by to c/science_memes@mander.xyz
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[+] 36 points 3 months ago* (last edited 1 month ago) (25 children)
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  • [–] 28 points 3 months ago (10 children)

    they do tavel in a perfectly straight line though.

    space time is curved, not the light path.

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  • [–] 1 point 3 months ago (3 children)

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

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  • [–] 2 points 3 months ago (2 children)

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

    it has choice anxiety.

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  • [–] -1 points 3 months ago* (last edited 3 months ago) (5 children)

    I don’t think that’s right because they are affected by gravity, even if ever so slightly

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  • [–] 24 points 3 months ago (2 children)

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

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  • [–] 4 points 3 months ago (1 child)

    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.

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  • [–] 12 points 3 months ago* (1 child)

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    Newtonian gravity has been replaced by General relativity, and has been proven to be the correct model (at least more correct than Newtonian gravity).

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  • [–] 3 points 3 months ago (9 children)

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

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  • [–] 3 points 3 months ago (3 children)

    Uh...

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  • [–] 2 points 3 months ago (2 children)

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

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