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4-Vector Norm

||v||=vec21+vec22+vec23+vec24
(Vec)Vector

This equation computes the Vector Norm, the positive length of a vector, of the four-vector , Vec.

Inputs

  • Vec1 - the 1st component of the 4-vector, Vec
  • Vec2 - the 2nd component of the 4-vector, Vec
  • Vec3 - the 3rd component of the 4-vector, Vec 
  • Vec4 - the 4th component of the 4-vector, Vec

Usage

There all kinds of vectors applied in physics for forces, positions, velocities, acceleration, etc. The position vector, often represented by r can be decomposed into its three components parallel to the Euclidean three-space axes:  r=rxrˆi+ryˆj+rzˆk.

Similarly, a velocity vector could be decomposed into its three Euclidean components as:  v=vxrˆi+vyˆj+vzˆk

Then spacetime has four component, as do numerous other physics elements, so that Vec=Vec1ˆu+Vec2ˆv+Vec3ˆw+Vec4ˆx

This equation computes the norm of a 4-vector.  The 4-vector does not have to represent some geometric and/or time  representation of space.  It can represent many different conceptual elements that have 4 components that comply with the general rules for vector mathematics.

See Also