• 4 Posts
  • 58 Comments
Joined 1 year ago
cake
Cake day: July 24th, 2023

help-circle

  • No physical mechanisms predefines future events (or is there one ?).

    So, I could state that the future does not exist yet and the past as ceased to exist.

    in that statement I have a problem with the definition of existence. Does the definition of existence exist itself ? This is (is it ?) more a problem of terminology than philosophy or physics.



  • Thanks for your time and attention.

    We have never observed anything in the universe just popping into existence from nothing (…)

    if we did, that would be a major shift in physics. in this regards I heard of (or read of) two candidates :
    .1 if universe’s expansion continues to accelerate, (it would mean) dark energy is increassing.
    .2 an excess of hydrogen (clouds) outside of galaxies was observed that is difficult to explain with current cosmology.

    I know these are not direct observation of something popping up, …but still.














  • A_A@lemmy.catoAsk Science@lemmy.worldGravity field scaling?
    link
    fedilink
    English
    arrow-up
    1
    ·
    edit-2
    1 year ago

    I did make I have made many mistakes, much worse than this one and on many occasions. I would say : don’t be so hard on yourself since it’s important to forgive ourselves.

    I do believe the following correction should be made again to your text though :

    Gravity is an [edit: inverse squared] function, so it gets weaker at an exponential a squared rate as you move away from the source.