How quickly do changes in fundamental forces propagate?

  • Context: Graduate 
  • Thread starter Thread starter jeevesh
  • Start date Start date
  • Tags Tags
    Gravity Light Matter
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
3 replies · 1K views
jeevesh
Messages
9
Reaction score
1
If there are 2 objects at the distance of 2 light years from each other exerting a pull of gravity on each other and one of them vanishes suddenly would the other feel the force instantly or 2 years later or after more time
 
  • Like
Likes   Reactions: olgerm
Physics news on Phys.org
jeevesh said:
If there are 2 objects at the distance of 2 light years from each other exerting a pull of gravity on each other and one of them vanishes suddenly would the other feel the force instantly or 2 years later or after more time

When you do a Google search for Speed of Gravity, what do you find? :smile:
 
  • Like
Likes   Reactions: Noctisdark
In fact all fundamental forces travel at the speed of light c,
 
Noctisdark said:
In fact all fundamental forces travel at the speed of light c,

Just for clarity, changes in fundamental forces travel at c.