- #1

Naty1

- 5,606

- 40

... a bodieselectric chargehas the same value for all observers,...

And here I had been thinking only about the speed of light as invarient.

Is the above coincidence?? I can't tell...

and the space time interval, is also invarient, right??

Are there other entities constant for all observers? Yes, I think four vectors such as "four vector momentum" which in simple terms is E

^{2}- p

^{2}that is (energy)

^{2}- (momentum)

^{2}...

I realize these transform (from one reference frame to another) as they do because of the mathematics of the formulations themselves, and the way they fit into relativity, but I can't help wondering if there is any deeper explanation or understanding. Any ideas?