- #1
Stephanus
- 1,316
- 104
Dear PF Forum,
Sorry if I ask again, because I want a detailed information.
Does the universe has a frame of reference?
Two twins. A stays, B "travels". (Travel here is confusing, B will say I stay and A travels) and B "turns around" and come back.
B ages more slowly then A.
Q1: Why?
A1: Because B turns around.
Q2: But in B point of view, isn't A who travels to him?
A2: No, because B accelerates.
Q3: So, the difference between A and B is that B feels the acceleration?
A3: Yes
Q4: Supposed, B sling shot a black hole and come back, doesn't he feel the acceleration?
A4: No, he doesn't feel.
Q5: Both doesn't feel acceleration, does B ages slowlier than A?
A5: Yes, because B changes its inertia frame of reference.
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My question here.
1. How can every atoms, energies and time in B know that they are changing their inertia frame of reference?
Because in Qestion number 2, it might be that A who travels to B in B point of view, because B doesn't feel acceleration.
2. Does the universe know that B is changing its inertial frame of reference? Does the universe "slow down" B clock?
3. Does atoms and energies and time in B know such as you travel in a train with a closed window?
So you have no idea that you're moving or not. But by looking at your GPS you know that you are moving
Sorry if I ask again, because I want a detailed information.
Does the universe has a frame of reference?
Two twins. A stays, B "travels". (Travel here is confusing, B will say I stay and A travels) and B "turns around" and come back.
B ages more slowly then A.
Q1: Why?
A1: Because B turns around.
Q2: But in B point of view, isn't A who travels to him?
A2: No, because B accelerates.
Q3: So, the difference between A and B is that B feels the acceleration?
A3: Yes
Q4: Supposed, B sling shot a black hole and come back, doesn't he feel the acceleration?
A4: No, he doesn't feel.
Q5: Both doesn't feel acceleration, does B ages slowlier than A?
A5: Yes, because B changes its inertia frame of reference.
--------------------------------------------------------------------------------
My question here.
1. How can every atoms, energies and time in B know that they are changing their inertia frame of reference?
Because in Qestion number 2, it might be that A who travels to B in B point of view, because B doesn't feel acceleration.
2. Does the universe know that B is changing its inertial frame of reference? Does the universe "slow down" B clock?
3. Does atoms and energies and time in B know such as you travel in a train with a closed window?
So you have no idea that you're moving or not. But by looking at your GPS you know that you are moving