Thursday, August 13, 2015

cosmology - When and where was WIMP dark matter formed?


Is the formation of WIMP dark matter confined to the high number densities associated with the early stages of the formation of the universe or are conditions in the collisions of black holes such that it is still being formed?




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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 \...