Relative motion and proper time

[Joao]

Hi everyone! Sorry for the bad english!

Quick question Just to see if I understood:

If a person on a spaceship moving at 0.7c in relation to a person in the earth, and both of then agreed they started making microwave popcorn at the same time (like when the spaceship is just above the head of the Earth one). And it takes 3 minutes for the popcorn to be ready. Each one Will ser that their own popcorn was ready first?

Thanks!

 

[Orodruin]

Each one Will ser that their own popcorn was ready first?

Yes. In essence, this is because they have different definitions of what it means for two events to be simultaneous.

 

[Nugatory]

Each on will see that their own popcorn was ready first?

Yes. Both of them will find that their popcorn is done three minutes after they started it, just as you would expect. Both will find that at the same time that their popcorn is done, the other' popcorn is not yet done.

 

[Joao]

Thanks a lot! I wish I was smarter, in order to study physics (and yonger) hehehehe! Reality is far more amazing than any work of fiction! Thanks all! Please fell free to close the post!

 

[sweet springs]

Popcorn exchange just for fun.

Say the rocket sends just cooked popcorn to Earth by missile which move -0.7c in the Earth IFR, the Earth receives 3-minutes- after-cooked popcorn. Earth time then is 6/√0.51=8.40 minutes so 5.4 minutes after own cooking. Hotter one comes. Earth people can enjoy different temperature tastes.

Say the Earth sends just cooked popcorn to Rocket by missile which move 0.7c in the Rocket IFR, Rocket receives 3-minutes- after-cooked popcorn. Rocket time then is 6/√0.51=8.40 minutes so 5.4 minutes after own cooking. Hotter one comes. Rocket people can enjoy different temperature tastes.