Three orthogonal directions in space determines a unique direction, and a positive direction is different from the negative direction. Given that all three type of particles, \(c\), \(g\) and \(T\) are in orbits and are involved in chemical bonds, correspondingly, \(e^{-},p^{+}\), \(g^{-},g^{+}\) and \(T^{-},T^{+}\), then strictly, there can be one approach between two reactive units such that energy required to work against both static fields (three types) and weak fields (also three types) is minimum.
For example, the approach from the top and from the bottom are different,
as the three orthogonal weak fields present a unique direction for which the approach requires minimum energy, the opposite direction need not be of the same energy.
When the disparity in energy required along different (opposing, if one of the reagent is planar) directions is large, the result is homochirality. Lactic acid is chiral.
