Unit Vectors. It is convenient to use vectors of unit length to specify the directions of vector quantities in the various coordinate systems. In cartesian coordinates it is typical to use i, j and k to represent unit vectors in the x, y and z directions respectively.nit Vectors. It is convenient to use vectors of unit length to specify the directions of vector quantities in the various coordinate systems. In cartesian coordinates it is typical to use i, j and k to represent unit vectors in the x, y and z directions respectively.
Freebase(0.00 / 0 votes)Rate this definition: The Enchantress is the name of two fictional characters in the Marvel Comics universe. The first of which is a powerful sorceress named Amora and is one of the most notable antagonists of Thor.
In traditional fairy tales or fantasy fiction, an enchantment is a magical spell that is attached, on a relatively permanent basis, to a specific person, object or location, and alters its qualities, generally in a positive way.n magic, occultism, shamanism, and witchcraft it is used with the intention of casting a spell on an object or a person. The term derives from Latin incantare (tr.), meaning to chant (a magical spell) upon, from in- into, upon and cantare to sing.