"Polar vector or real vector is a vector which possesses direction inherently (eg. displacement), the direction of polar vector remains unchanged irrespective of the coordinate system chosen. If the components of a polar vector are reversed, the vector obtained is different from the original vector. Components of polar vector change sign when the coordinate system is inverted but components of pseudo vector does not change in such a case. Psedo vector remains unchanged even if its components are reversed (eg. angular velocity) Are the above statements I read about pseudo vector correct in general? Angular velocity vector remains unchanged even if its components are reversed? I am unclear about this, could some one kindly elaborate?