# granpa

Senior Members

894

1. ## The Twin Paradox & Frame of Reference

It isn't just what you see when you look in the direction of the clock.You also have to calculate the distance to the clock. That distance will change when you accelerate.
2. ## The Twin Paradox & Frame of Reference

https://en.wikipedia.org/wiki/Einstein_synchronisation
3. ## The Twin Paradox & Frame of Reference

He even drew you a space time diagram. My guess is that you are hoping to make us angry so we will say something bitter and then you can get us banned

Computers know how to do things but don't yet know what they are doing
5. ## The Twin Paradox & Frame of Reference

But what would you calculate it's time as?
6. ## The Twin Paradox & Frame of Reference

The further away the clock is from the rocket the more out of sync it is. What time will a clock at Infinity say? At minus infinity?
7. ## Bible Disproved By One Scripture

How about God created microorganisms on day 4 becoming corrupted into God creating sun moon and stars on day four?
8. ## The Twin Paradox & Frame of Reference

At no point do you see the clocks being out of synch? If you see the clocks being in sync with your clock and then you accelerate and see the clocks being out of sync and then you decelerate and see them being in sync again then at some point some of the clocks must run backwards (if they are far enough away)
9. ## The Twin Paradox & Frame of Reference

Then they will be a day apart from the point of view of the stationary clocks Draw A Spacetime diagram. Let the x-axis a space and the y-axis be time. Draw clocks on the x-axis at time equals zero. Then draw a diagonal line representing 1 simultaneous moment from the point of view of the rocket. How to draw a spacetime diagram: https://www.physicsforums.com/threads/how-to-draw-a-spacetime-diagram.314080/
10. ## The Twin Paradox & Frame of Reference

Synched in whose frame?
11. ## The Twin Paradox & Frame of Reference

A simple space-time diagram would be sufficient. There's no way you can possibly not know this stuff. I have no idea why you are dragging me through all this. But it's getting tiresome.
12. ## The Twin Paradox & Frame of Reference

From the point of view of the stationary clocks all of the clocks are in sync and agree with the Rockets clock provided the rocket has sped up his Clock to keep up with the normal time From the Rockets point of view things look differently
13. ## The Twin Paradox & Frame of Reference

each stationary clock disagrees with the rocket clock by a different amount? not from the point of view of the stationary clocks
14. ## The Twin Paradox & Frame of Reference

look at it from the point of view of the stationary clocks at first rocket is stationary and all the clocks are in synch with it clock onboard the rocket. the rocket accelerates to velocity v and is time dilated by gamma but the clock onboard the rocket is adjusted to run at gamma times faster than normal. from the point of view of the stationary clocks the rocket is now in synch. from the rockets point of view all the clocks are out of synch but when the rocket and a given clock are at the same place at the same time then that given clock must agree with the clock onboard the rocket
15. ## The Twin Paradox & Frame of Reference

It's easy to see if you look at it from the point of view of the stationary clocks
16. ## The Twin Paradox & Frame of Reference

I made one small error. Even though the line of clocks appears to be length contracted and and the clocks appear to be ticking slower they are so out of sync that the clock on board the rocket would actually have to be sped up not slowed down. This is easy to see if you just look at it from the point of view of the stationary clocks Nevertheless that doesn't change anything. The point is the rocket can adjust the speed of the onboard clock so that it's always in sync with whatever clock the rocket is passing.
17. ## The Twin Paradox & Frame of Reference

From the Rockets point of view the clock at Andromeda went from being perfectly in sync with its own onboard clock to being a full day out of sync and then went back to being perfectly in sync again. Obviously at some point in that process it had to seem to run backwards from the point of view of the rocket
18. ## The Twin Paradox & Frame of Reference

A long line of stationary clocks stretches from here to Andromeda. I am stationary. All of the clocks are perfectly in sync with one another. I begin moving toward Andromeda and now the line of Clocks all are ticking slower by a factor of gamma. So I deliberately slow my own onboard clocks down to match this speed. The clocks also appear to be out of sync with each other. The farther away the clock is the more out of sync it is. The clock at Andromeda is a full day out of sync. But every clock that I pass agrees with my own clock at the moment when it passes by my rocket. I now stop the rocket and return my onboard clock to normal speed. The Clocks no longer seem out of sync with one another and agree with my own onboard clock My calculation of the time on the clock at Andromeda is no longer a full day out of sync All of this takes place in only a few minutes as measured by the stationary clocks
19. ## The Twin Paradox & Frame of Reference

If I'm not moving my calculation of the time on a clock in Andromeda is simply the current time. If I start moving at the necessary speed in the right direction than my calculation of the time on a clock in Andromeda jumps forward one day. now I stop moving. What is my calculation of the time on the clock in Andromeda?
20. ## The Twin Paradox & Frame of Reference

You accept that they're out of sync and that the further away they are from the rocket the more out of sync they are. Do you accept that my calculation of the time on a clock in Andromeda can become a full day out of sync if I start moving fast enough in the right direction? What do you think happens when I stop moving?
21. ## The Twin Paradox & Frame of Reference

are you saying the clocks wont be out of synch from the point of view of the rocket??? https://en.wikipedia.org/wiki/Relativity_of_simultaneity
22. ## The Twin Paradox & Frame of Reference

If the calculated time at Andromeda jumps forward a full day when I start moving that it obviously jumps back a full day when I stop. Here: You should see a rocket this time. If not then maybe reload or bypass cache.

So Content I have not read means op's I have not read not replies I have not read

The new content button is very convenient but why isn't there an option to just show new threads?
25. ## The stuff we are made of.....

Even if you have a soul that soul is still just a body that follows mathematical laws
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