- #1
ibc
- 82
- 0
Hello
in SR, the interval between two events is defined to be:
s^2=x^2 + y^2 + z^2 - t^2
so my question is, why does the time get a minus sign? what differs it from the other 3 dimensions, what's the physical meaning of this difference and what is the physical meaning of this interval s^2
I thought I understood it at first, but then, when derived the time dilation and lorenz contraction using coordinate systems, when I tried to do it with normal Pythagoras' theorem, I obviously got 1/(1+v^2)^0.5 instead of 1/(1-v^2)^0.5 each time, so again, where does this minus sign come from?
in SR, the interval between two events is defined to be:
s^2=x^2 + y^2 + z^2 - t^2
so my question is, why does the time get a minus sign? what differs it from the other 3 dimensions, what's the physical meaning of this difference and what is the physical meaning of this interval s^2
I thought I understood it at first, but then, when derived the time dilation and lorenz contraction using coordinate systems, when I tried to do it with normal Pythagoras' theorem, I obviously got 1/(1+v^2)^0.5 instead of 1/(1-v^2)^0.5 each time, so again, where does this minus sign come from?