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Old 13-May-2008, 07:53 PM
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mugaliens mugaliens is offline
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Quote:
Originally Posted by alainprice View Post
They won't see the lights change at the same time.

Your problem is in saying the lights are synchronized. Who are they synchronized for?
It depends on how they're synchronized. If they're synchronized by a wire which connects both to the same power source, with the timer centrally located, then the central observer will continue to see both lights blinking at the same rate as before, while the rim observer will see both lights still blinking together, but at ever faster rates the closer he gets to the speed of light.

If the timer is on the rim, then the rim observer will continue to observe no changes, while the central observer will observe the blinks taking longer and longer as the rim velocity increases.

If the lights are synchronized by timers at each location, then the center light will continue blinking at one second per second, while the rim light will continue to blink every longer, and the synchronization between the lights will degrade.
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