Hi,(adsbygoogle = window.adsbygoogle || []).push({});

This is a question to which I haven't found an answer anywhere, so I'm probably seeing this wrong but I can't seem to figure it out.

I realize time is warped relative to speed, what I don't understand is the following:

-Considering 2 people, A and B. Let us say that A is stationary and B is moving away from A at a speed very close to that of light (such as the famous twin paradox).

-Now consider that A is emitting an information bearing, electromagnetic signal towards B.

-The way I see it, while B is moving away from A, it is receiving a red shifted beam of information. B is "learning" a lot slower than if he were at rest.

-Now let B turn around at some point and move towards A at the same speed as he was moving away. B is now receiving a blue shifted signal and is "learning" at very fast pace.

-When B finally reaches A, he will have been subjected to all the information broadcasted by A, but at some point will have received it a lot faster, and at some point a lot slower.

- If B's time is running a lot slower as it is proven to, and A has broadcasted one year of his life, does this mean that B has seen everything that has happened in fast forward all the time? Even though the signal was red shifted for half of his trip?

I can't seem to put together the idea of an information exchange with time compression... I visualize electromagnetic waves as constant speed separated crests, which naturally seem closer together if you're traveling towards them, and further apart if you are traveling away.

In the same way, if B is sending EM waves while coming closer to A, A will receive a compressed signal followed from very close by the arrival of B (lets say B is traveling at 99.999999% of c)...

I know a drawing would help but if somebody understands what I'm trying to say could you please enlighten me? Thanx :)

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Visualisation of relativity

**Physics Forums | Science Articles, Homework Help, Discussion**