Reversal is generally described as the percentage of the maximum rated voltage that reverses polarity. The plant's death reverses the effect. In effect this reverses the momentum of free riding. As the shaft rotates, the commutator reverses the flow of current in a winding. Moments later, Claire's transformation reverses itself and she wakes up completely human. Fortunately, 5-HT receptor antagonism reverses these side effects to some extent. In contrast, Aristotle reverses Plato's order of derivation. A mirror typically reverses the forward/backward axis. Therefore, it "reverses" rather than preserves orientation, it is an indirect isometry. In alternating current (AC) systems, the movement of electric charge periodically reverses direction. It is a toggle key&colon; each press reverses its action. The tide then reverses direction and is said to be turning. As this happens, the flow reverses. She later reverses the Immobilizer's operation and ensures an Autobot victory. Acting on the position, it reverses the directions of space, so that .