A commutator is a mechanism used to switch the input of most DC machines and certain AC machines consisting of slip ring segments insulated from each other and from the electric motor's shaft. The motor's armature current is supplied through the stationary brushes in contact with the revolving commutator, which causes required current reversal and applies power to the machine in an optimal manner as the rotor rotates from pole to pole.   In absence of such current reversal, the motor would brake to a stop. In light of significant advances in the past few decades due to improved technologies in electronic controller, sensorless control, induction motor, and permanent magnet motor fields, electromechanically commutated motors are increasingly being displaced by externally commutated induction and permanent-magnet motors .
Either the Bush Administration is lying, or most of America’s close allies are. So why hasn’t Congress investigated these foreign intelligence claims? Why hasn’t a single mainstream media article connected all these dots, or given these warnings the coverage they deserve? Either some people within the US government knew the 9/11 attack would happen and did nothing, or some people within the US government failed to heed advice from a dozen foreign governments and properly defend the US from attack. Perhaps both. These people should be removed from office on the grounds of gross incompetence, or face the legal consequences of aiding and abetting terrorism. It seems clear that there are people who fear an investigation, and that that is why these dots are left unconnected.