Recent content by T-Marked

Hi Y'all, Hope all is well for the holidays. I am a senior and headed toward a BS in Biochemistry. But I have been doing research with a guy who does environmental remediation for 2 years. I think that that is where my heart lies. I want to develop more specialization especially because my...

No worries, this was great and elucidating. thank you.

Hi, when you write F's, is that referring to F' or F?

Thanks to Orodruin and Nugatory!

Assuming F' sends the reply signal instantly, I do not have to account for if F' moved between receiving and sending? I can just double the time that I calculated with c*t=.5c(t+10).

This question, in the end, did not require the use of gamma at all? As long as I stayed in frame of F, it was largely an algebraic problem?

Thank you. I think I can calculate this with c*t=.5c(t+10). Does it matter for the final answer that I am calculating all of these distances and times in frame of F even when F' is the one that sends a signal back?

and it is 10 seconds from the perspective of a clock on Earth.

Apologies: I meant frame of F.

And .5c is the speed in the time frame of the Earth. If I keep all of my events, signal send and signal received in F's frame and F is inert, then I do not need to use Lorentz' transformation? If I am thinking about this correctly, the first event is F sending a signal at 10 seconds (his...

Ohh, right F' does not stop moving. So we could solve for it algebraically by having c*t=.5c(t+10), where t is the time light will reach F'.

Hi All, An observer, F, stands on Earth. A spaceship, F', is also on Earth. Their clocks are set at 0. The spaceship then leaves Earth at .5c. After 10 seconds, F sends a light signal to F'. As soon as F' receives the signal, F' sends a light signal back. When does F receive this signal from...