- #1
hprog
- 36
- 0
Hi.
The concept of relativity is that the laws of physics are the same in all inertial frames of reference.
As a result of relativity we have the relativity of simultaneity, which says that two events that are simultaneous in one inertial frame are not simultaneous in other frames.
Now consider we have a piece of wood and we put on a fire in exactly its middle, then according to the laws of physics (if the conditions are equal on both sides of the piece of wood) then the fire will arrive at the ends of the piece of wood simultaneously.
Or consider if we stand in the middle of a train and we trow two balls to the two ends of the train car with the same force, then according to physics the balls will arrive at the ends of the train simultaneously.
This is a result of the laws of physics and therefore according to relativity should be true regardless of the frame the situation is being observed.
However the relativity of simultaneity says that simultaneous events in one frame are not to be simultaneous according to another frame, so how is the situation to be explained?
(Note that every frame will agree on the middle point of objects since both halves are equaly contracted on frames that the object is in motion)
The concept of relativity is that the laws of physics are the same in all inertial frames of reference.
As a result of relativity we have the relativity of simultaneity, which says that two events that are simultaneous in one inertial frame are not simultaneous in other frames.
Now consider we have a piece of wood and we put on a fire in exactly its middle, then according to the laws of physics (if the conditions are equal on both sides of the piece of wood) then the fire will arrive at the ends of the piece of wood simultaneously.
Or consider if we stand in the middle of a train and we trow two balls to the two ends of the train car with the same force, then according to physics the balls will arrive at the ends of the train simultaneously.
This is a result of the laws of physics and therefore according to relativity should be true regardless of the frame the situation is being observed.
However the relativity of simultaneity says that simultaneous events in one frame are not to be simultaneous according to another frame, so how is the situation to be explained?
(Note that every frame will agree on the middle point of objects since both halves are equaly contracted on frames that the object is in motion)