2 ms·
> Consider this scenario Let me re-describe your scenario properly: Your buddy sends you information about stock exchange rates when his clock reads 12 noon e
by pdonis 2y ago
> Consider this scenario
Let me re-describe your scenario properly:
Your buddy sends you information about stock exchange rates when his clock reads 12 noon exactly. You are one light-second away from him, so his message is received by you at 12 noon + 1 second, his time. That is also 12 noon + 2 seconds, your time, but that doesn't matter; it's still information about rates when his clock said 12 noon, not rates when his clock said 12 noon + 1 second, 1 second after he sent the message.
In other words, the fact that your clock ticks faster and gets "ahead" of your buddy's does not mean you receive information from your buddy's future.
- alganet 2y agoYour example makes sense, the distance for light to arrive makes it impossible (also, the distance for the light from the craft to reach the telescope in step 4, it's a round trip). Going further than this is way above my skillset :D Thanks for the time to indulge my curiosity, I'll study more and try to develop a better intuition.
- pdonis 2y ago> the distance for light to arrive makes it impossible If you mean the 1 second light travel time is the same as the 1 second clock difference, you can increase the clock difference by just spending longer in orbit. For example, you could wait until the clock difference was 1 hour. Then, if your buddy sent you a light signal at 12 noon by his clock, it would arrive at 1 pm + 1 second (1 second light travel time) by your clock. But it would still be telling you stock exchange rates at 12 noon by your buddy's clock, not 1 pm by your buddy's clock.