Tuesday, May 8, 2018

special relativity - Four-vector addition in Minkowski space


I've been reading that Minkowski space is a real vector space; atleast in flat space-time. So that means that we should be able to define vector addition, scalar multiplication, etc. But since four-vectors in space-time are events, how does adding two events make sense? More importantly, what is the meaning of the resultant vector?




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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...