A problem of light and matter

  • #1
9
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 olgerm

Answers and Replies

  • #2
berkeman
Mentor
60,912
11,297
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 Noctisdark
  • #3
224
35
In fact all fundamental forces travel at the speed of light c,
 
  • #4
Drakkith
Staff Emeritus
Science Advisor
21,389
5,231
In fact all fundamental forces travel at the speed of light c,

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

Related Threads on A problem of light and matter

  • Last Post
2
Replies
31
Views
5K
  • Last Post
Replies
1
Views
2K
  • Last Post
2
Replies
29
Views
88K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
13
Views
17K
  • Last Post
2
Replies
35
Views
4K
  • Last Post
Replies
11
Views
2K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
1
Views
2K
Top