• 1 Post
  • 50 Comments
Joined 4 months ago
cake
Cake day: June 13th, 2024

help-circle
  • The reason the speed of light doesn change is because rthe universe bends the rules of time to make it the same. So as the universe expands, the speed of light stays the same because the definition of time changes.

    Like I said. The expansion of the universe isn’t space expanding, it’s the definition of distance that’s expanding. Yes time is being fucked with as part of the expansion. But the universe doesn’t hold distance or time as constant frames to compare to. As speed is only calculated with a frame of reference. Where distance is a little more fundamental to the universe.

    Because the scale is so so much less. Like 73 km/s/Mpc.

    So the rate of something to the scale of 10^-9m, would be somewhere in the order of 10^-25m/s. Which is much much smaller than anything with the attoms itself.

    But the distance is always the same. A meter is still a meter in all points of time. But it’s still bigger.




  • wholookshere@lemmy.blahaj.zonetoScience Memes@mander.xyzRaisins!!
    link
    fedilink
    English
    arrow-up
    1
    arrow-down
    2
    ·
    edit-2
    12 hours ago

    So yes attoms are expanding. everything is expanding. I mean that very literally.

    Let me put it this way.

    If you had a million year old meter stick. It would always be a meter. Accurate to the definition of a meter using the wavelength of I don’t remember what off the top of my head. It would always be a meter exactly.

    But.

    If you magically placed the meter stick next to itself from a million years ago, they would not measure the same. Even though they started with the same definition.

    Like I said. Space isn’t expanding. Distance is.

    EDIT I don’t mean the distance between things is expanding. The definition of what a distance was is expanding. So yes, attoms, when measured by size (the distance from one edge to another) has also expanded.

    But in the same breath, the measured distance never changes. Because the way you use to measure distance has also expanded by the same amount. So nothing ever changes in reality, but everything is just constantly bigger.

    Physics is full of hard to explain paradoxes.


  • wholookshere@lemmy.blahaj.zonetoScience Memes@mander.xyzRaisins!!
    link
    fedilink
    English
    arrow-up
    1
    arrow-down
    1
    ·
    14 hours ago

    I see where this is diverging a little bit.

    But everything is expanding. Including matter. But the mass isn’t chaning.

    But this also includes the space in between the objects.

    So objects are getting further apart, but so are the objects getting bigger at the same rate.

    The mind bend for me was realsing it’s not space that expanding really, it’s distance.

    This is why distant light is red shifted. Because what started out as white, has had the wavelength expand with the universe, making it appear more red.












  • wholookshere@lemmy.blahaj.zonetoScience Memes@mander.xyzSquare!
    link
    fedilink
    English
    arrow-up
    1
    ·
    edit-2
    7 days ago

    My whole point is that a “straight done”, in general, doesn’t exist in the first place. Because in general definitions are actually really hard.

    It’s not that it’s important to me. It’s that I’ve spent many parts of my day on the phone with the bank, and never should be taken for more than an asshole on the internet. Sorry if you thought I was more invested than that.


  • wholookshere@lemmy.blahaj.zonetoScience Memes@mander.xyzSquare!
    link
    fedilink
    English
    arrow-up
    1
    ·
    edit-2
    7 days ago

    Except here you said here

    https://lemmy.ml/comment/13839553

    That they all must be equal.

    Tangents all be equal to the point would be exponential I thinks. So I assume you mean they must all be equal.

    Granted I assumed constant, because that’s what actually produces a “straight” line. If it’s not, then cos/sin also fall out as “straight line”.

    So I’ve either stretched your definition of straight line to include a circle, or we’re stretching “straight line”


  • wholookshere@lemmy.blahaj.zonetoScience Memes@mander.xyzSquare!
    link
    fedilink
    English
    arrow-up
    1
    ·
    edit-2
    7 days ago

    But then your definition of a straight line produces two different shapes.

    Starting with the same definition of straight for both. Y(x) such that y’(x) = C produces a function of cx+b.

    This produces a line

    However if we have the radius r as a function of a (sorry I’m on my phone and don’t have a Greek keyboard).

    R(a) such that r’(a)=C produces ra +d

    However that produces a circle, not a line.

    So your definition of straight isn’t true in general.