All Questions
8
questions
-2
votes
1
answer
292
views
What does it mean that gravity is '"local"? [closed]
What is "local" defined to be? Why don't larger systems affect smaller ones? ie. Don't we need to consider the gravitational pull from all other objects in the universe? Is this "...
- 167
0
votes
0
answers
33
views
What does it mean be gravity propagates with $c$? [duplicate]
I know that gravity propagates with speed of light. Does it mean that if Earth's orbit will disturb after 2 years if a supermassive black hole suddenly appears 2 light years away? Is this related to ...
2
votes
2
answers
1k
views
How does the Earth know when to send a graviton to a newly born particle?
Pardon if this is a silly queston, but I'm reading this for the first time. It says that the force we perceive between two objects is an effect of the exchange of the force carrier particles. Even ...
- 1,113
0
votes
1
answer
302
views
Is gravity instantaneous? [duplicate]
I want to know if (hypothetically) a star appears out of nowhere at a certain distance (say 20 light seconds) away from me, how long will it take for me to get the feel of it's gravity? Will I know it ...
- 141
0
votes
2
answers
63
views
Is the influence of gravity greater than light? [duplicate]
As the influence of gravity is infinite throughout the universe.is the influence of its force on a body very far away faster than the speed of light.suppose a star dies...is the influence of its ...
1
vote
2
answers
228
views
Principle of locality and forces
I have a silly confusion about the statement written in the link Einstein and Locality
''external influence on A has no direct influence on B; this is known as the Principle of Local Action.''
...
- 1,125
1
vote
2
answers
99
views
Solar Catastrophe [duplicate]
Consider all of sudden the sun vanishes. What would happen to planetary motion. Will it continue to move in elliptical path or move in a tangential to the orbit immediately after sun vanishes or move ...
- 598
140
votes
11
answers
21k
views
How fast does gravity propagate?
A thought experiment: Imagine the Sun is suddenly removed. We wouldn't notice a difference for 8 minutes, because that's how long light takes to get from the Sun's surface to Earth.
However, what ...
- 3,930