- #1
drawingthesun
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Hello, I’ve been browsing these forums for a while now; I like physics and I get really interested in all sorts of physics stuff. My main interest is space because I find it really fascinating.
I have two questions that I’ve been curious about for a while now;
The first question is about time dilation, I believe that I have a good grasp on certain aspects of it; I have been interested in how time takes place slower on moving objects and how time moves slower with a greater gravitational potential (being near to earth)
I understand that we observe that the passage of time moves slower nearer to the event horizon of a black hole because of time dilation; then is there, somewhere in the universe a place with absolutely no gravity or movement where time takes place a lot quicker? So if we were to take a clock, and place it where there is no gravitational effect at all, would it tick quicker compared to clocks on earth?
I also understand that our galaxy moves tremendously fast through the universe, if the clock was be slowed down to complete stop (no longer moving with our galaxy), would that cause the clock to tick faster? Even though it would seem that the clock is moving and we are staying still, but that wouldn’t be the case, because we move through the universe and it would be the clock that is not moving.
My second question is a little more simple; if all the galaxies are moving at near to the speed of light away from each other and away from the universe centre, would that mean within one of those galaxies you would not be able to send a light beam from point “A” to point “B” at the speed of light (relative to the galaxies inhabitants) with point “A” being in the centre of the galaxy and point “B” being near to the edge of that galaxy (the edge leading the galaxy away from the centre of the universe)
Because if you sent the light beam from “A” it would not be able to travel as fast as light in a vacuum because of the speed that galaxy is already moving at, otherwise the light beam would have moved quicker than light speed because the galaxy is already at almost light speed.
(Sorry about my terrible English.)
Thank you very much
Joseph G
I have two questions that I’ve been curious about for a while now;
The first question is about time dilation, I believe that I have a good grasp on certain aspects of it; I have been interested in how time takes place slower on moving objects and how time moves slower with a greater gravitational potential (being near to earth)
I understand that we observe that the passage of time moves slower nearer to the event horizon of a black hole because of time dilation; then is there, somewhere in the universe a place with absolutely no gravity or movement where time takes place a lot quicker? So if we were to take a clock, and place it where there is no gravitational effect at all, would it tick quicker compared to clocks on earth?
I also understand that our galaxy moves tremendously fast through the universe, if the clock was be slowed down to complete stop (no longer moving with our galaxy), would that cause the clock to tick faster? Even though it would seem that the clock is moving and we are staying still, but that wouldn’t be the case, because we move through the universe and it would be the clock that is not moving.
My second question is a little more simple; if all the galaxies are moving at near to the speed of light away from each other and away from the universe centre, would that mean within one of those galaxies you would not be able to send a light beam from point “A” to point “B” at the speed of light (relative to the galaxies inhabitants) with point “A” being in the centre of the galaxy and point “B” being near to the edge of that galaxy (the edge leading the galaxy away from the centre of the universe)
Because if you sent the light beam from “A” it would not be able to travel as fast as light in a vacuum because of the speed that galaxy is already moving at, otherwise the light beam would have moved quicker than light speed because the galaxy is already at almost light speed.
(Sorry about my terrible English.)
Thank you very much
Joseph G