New posts in Special Relativity

"in" and "out" states in Weinberg's QFT

Wouldn't a negative mass be going faster than $c$ according to our current models of relativity?

How abruptly does the Doppler shift change sign?

Red- / Blueshifting and relativistic length contraction at $0.8c$ - How would it look?

Dimensions of momentum?

If two reference frames are not moving with respect to each other, do we take into account their distance apart to determine simultaneity of events?

How do Rindler coordinates fit into special relativity?

Hypothetical: Can I determinate if my room is moving by measuring the time it takes for a photon to reach the oposite wall?

Why do we have to revise the definitions of momentum and force in special relativity?

In relativity, if units of length contracts and time dilates then does unit of velocity or speed also change?