• UnderpantsWeevil@lemmy.world
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    2 months ago

    imagine … hearing the jackhammer scream of our star

    Sounds are a form of energy. If we were bombarded by sound waves for the entire existence of the planet, I assume life would have adapted to harness this abundant power source and made it instrumental to how we survive and thrive.

  • powerofm@lemmy.ca
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    2 months ago

    First time I saw the North Lights in person I also expected something other than complete silence. I don’t know what, but they’re so surreal and massive I thought you’d hear something.

  • addictedtochaos@lemm.ee
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    2 months ago

    so, someone did the math on that?

    no vacuum, that means atmosphere. so lets say 1 atmospheric pressure the whole way.

    which would be sad, because rain, clouds, ozone layer and countless other atmospheric phenomen would be impossible. so no life on the planet anyway.

    https://en.wikipedia.org/wiki/Acoustic_attenuation

    how loud is the sun? does anybody know? what is the acoustic pressure on a certain orbit near the sun, iof there is atmosphere?

    so, the acoustic presssure needs to reach earth. it needs to travel 13 years.

    overcoming this much atmosphere between sun and earth eats energy, since there is a resistance. because there is an atmosphere, see? thats why sound gets softer and softer, the more away you are from the source.

    so I guess the whole idea is bullshit.

    but i am just a construction worker, maybe someone else will do the math.

    i doubt any light rays would make it here. it would be pitch black dark.

    the light would be scattered by the atmosphere.

    the vaccum does not block sound. it just doesnt transmit it. there is nothing what can block.

    same as vacuum does not suck. never. the key is pressure differential, the higher pressure dictates what will happen, not the lower pressure.

  • Diplomjodler@lemmy.world
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    2 months ago

    Just one small hitch: if there was an atmosphere in space dense enough to carry sound, the earth would burn up in minutes.

      • Rose Thorne(She/Her)@lemm.ee
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        2 months ago

        Oh hey, thanks! Been hearing it for years, turns out I just never look left!

        I wish they’d give me my driver’s license back…

      • saltesc@lemmy.world
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        2 months ago

        Nah. It starts out like THUD! THUD! and then slowly after a couple minutes of warming up, that goes all muffled and it becomes that familiar high-pitched ringing noise.

  • Etterra@lemmy.world
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    2 months ago

    On the plus side, if we evolved on Planet Sunblaster then our hearing would have evolved to either dial down the volume or filter it out completely.

    • UnderpantsWeevil@lemmy.world
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      2 months ago

      Or perhaps we’d use the reflected soundwaves to navigate with echolocation much like we use reflected light waves to see.

    • CitizenKong@lemmy.world
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      2 months ago

      I mean we hear the sound of our blood rushing through the veins of our ears at all times, but our brain filters it out. That the “sound of the ocean” you hear when listening into a conch, it just amplifies the bloodwaves. Other fun stuff our brain does: Our eyes are actually perceiving the world upside down and with a blind spot right in the middle.

      • filcuk@lemmy.zip
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        2 months ago

        The way senses are processed is almost unbelievable.

        When your eyesight is partially damaged (by a laser, for example), your brain will fill in the spots, so you won’t even realise there’s a problem until it’s too late (too much damage to cover up).
        As the above stated, there’s a blind spot (although I don’t think it’s smack in the middle) - there are tests online you can try to ‘see’ it.
        Your sight also automatically enhances objects it thinks are important, and will predict movementsand patterns, e.g. a baseball you’re trying to hit.
        There’s also no colour in peripheral vision, although the brain does colour it in.

  • leadore@lemmy.world
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    2 months ago

    If the sun were to go out it would take 8 minutes for the light to stop but 13 years for the sound to stop.

    Kind of like when you kill an enderman. 🤔

  • xantoxis@lemmy.world
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    2 months ago

    You wouldn’t, of course. Hearing, the way we hear, in such an environment would be useless. We wouldn’t have evolved that. This is like saying “ultraviolet radiation from the sun would be everywhere, all the time, can you imagine?” It is everywhere all the time, but as such it isn’t a useful sense to possess, so we don’t.

    This also makes some very weird assumptions about what the sound would be like. If space were a medium sound could travel through then it would–like all mediums capable of carrying a sound wave–alter the wave in many ways. Intensity, frequency, etc. But since we don’t know what kind of medium that would be, and since the comment doesn’t posit any particular medium, we don’t know what the sound would sound like or even how loud it would be.

    • SapphironZA@sh.itjust.works
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      2 months ago

      If the sound is more of a loud hiss, you might find that echolocation can work very well. Much like our eyes collect available light bouncing off surfaces, similar techniques can be used with sound.

    • stephen01king@lemmy.zip
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      2 months ago

      By your logic, light isn’t a useful sense to possess since it’s everywhere all the time thanks to sunlight and moonlight, is that correct?

      Actually, since ultraviolet radiation and light are both electromagnetic waves, they should be treated the same, shouldn’t they? It’s as if there could be a different reason why we can detect one but not the other.

      • chatokun@lemmy.dbzer0.com
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        2 months ago

        Yes, and some animals (mostly birds iirc) do see UV. Boring brown/black birds aren’t so boring in UV. I don’t know the evolutionary pressure necessary for UV, but it could have developed. Red, for instance, is believed to have been useful for us to pick out berries. Wolves, being carnivorous, wouldn’t necessarily need it, so see in yellow blue… or so I read as a theory a while ago.

    • CeruleanRuin@lemmings.world
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      2 months ago

      I assume that this thought experiment posits a space filled with the same average density of particles found at ground level on Earth. Obviously such a thing is nonsensical, but it serves to illuminate one aspect of the raw power of the Sun that we ignore, because we’re insulated from it by 93 million miles of vacuum.

  • Samsy@lemmy.ml
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    2 months ago

    Evolution would say: nope. And the surviving class would be deaf. No one is able to accept a permanent jackhammer.

  • niktemadur@lemmy.world
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    2 months ago

    A bullet fired from a gun goes more or less at Mach 1, correct?
    It’s thirteen years to the sun at the speed of a bullet?

    Spacecraft towards Mercury, or the Parker Solar Probe go much faster than that, take a few years to make it there, but they are doing so picking up speed in flybys of first Earth, then Venus, then Mercury, in several, ever tighter orbits.

    It’s both fun and illuminating to try and visualize these things in new ways. In this case, from the viewpoint of a bullet.