It can look dumb, but I always had this question as a kid, what physical principles would prevent this?

  • essell@lemmy.world
    link
    fedilink
    arrow-up
    1
    ·
    6 hours ago

    I think relativity demonstrates that light does have mass?

    They might not have “rest mass” but they do have mass!

    The eclipse experiment proved it, solar sails whilst hypothetical demonstrate it.

    • itslilith@lemmy.blahaj.zone
      link
      fedilink
      arrow-up
      3
      ·
      4 hours ago

      Relativistic mass is not helpful to our everyday understanding of mass, it’s more helpful to discuss momentum, like the other commenter pointed out