ToQuaternion[q] transforms q into a Quaternion object if possible.
UnitQuaternionQ[q] gives True if q is a unit quaternion and False otherwise.
Atto
(Units Package Symbol) Atto is the SI unit prefix denoting 10 -18.
Centi
(Units Package Symbol) Centi is the SI unit prefix denoting 10 -2.
CGS
(Units Package Symbol) CGS[expr] converts expr to CGS units (centimeter/gram/second).
Deca
(Units Package Symbol) Deca is the SI unit prefix denoting 10^1.
Deci
(Units Package Symbol) Deci is the SI unit prefix denoting 1/10.
Dozen
(Units Package Symbol) Dozen is a unit multiplier.
Exa
(Units Package Symbol) Exa is the SI unit prefix denoting 10^18.
Femto
(Units Package Symbol) Femto is the SI unit prefix denoting 10 -15.