- #1

guyvsdcsniper

- 264

- 37

- TL;DR Summary
- You either experience Time Dilation and Proper Length or Proper Time and Length Contraction. Is this correct?

I just started learning about Special Relativity and have come upon the topics of Time dilation and Length contraction. Its a bit abstract for me and I just want to cross ref my knowledge here and see if someone can tell me if I am understanding this correctly. I've attached an excerpt of a passage in my textbook just for reference.

So if I am at rest and a particle passes by my at the speed of light, I am witnessing the particle with time dilation. If I was the particle, I would be witnessing proper time.

In the second instance, If I am at rest and measure the creation and decay of the particle then I am measuring Proper Length. This is because I am at rest wrt to the particle. But if I am the particle, moving at the speed of light, everything passing by me appears shorter because of how fast I am going?

So you either experience Time Dilation and Proper Length or Proper Time and Length Contraction.

Thats what i got from reading. Maybe there is other combinations of these 4 properties but for right now, is this correct?

S

So if I am at rest and a particle passes by my at the speed of light, I am witnessing the particle with time dilation. If I was the particle, I would be witnessing proper time.

In the second instance, If I am at rest and measure the creation and decay of the particle then I am measuring Proper Length. This is because I am at rest wrt to the particle. But if I am the particle, moving at the speed of light, everything passing by me appears shorter because of how fast I am going?

So you either experience Time Dilation and Proper Length or Proper Time and Length Contraction.

Thats what i got from reading. Maybe there is other combinations of these 4 properties but for right now, is this correct?

S