It absolutely does depend on your reference frame. I remember one of my physics 3 test problems was a ship in it’s own reference frame was a standard 3 4 5 right triangle. We had to calculate what the observed lengths and angles from a reference frame where it was moving at .96c.
It absolutely does depend on your reference frame. I remember one of my physics 3 test problems was a ship in it’s own reference frame was a standard 3 4 5 right triangle. We had to calculate what the observed lengths and angles from a reference frame where it was moving at .96c.