An electric machine comprising: a turbomachine rotor having a hub and an axis of rotation (A-A) about which the turbomachine rotor is arranged to rotate; a plurality of blades , each blade having a root attached to the hub , a tip remote from the hub, a leading edge and a trailing edge , a pressure side face and a suction side face ; a plurality of rotor elements , each rotor element located at the tip of one of the plurality of blades; and a stator located circumferentially around the turbomachine rotor; wherein each rotor element comprises a permanent magnet having a first pole and a second pole , the first pole being located adjacent the suction side of the blade and the second pole being located adjacent the pressure side such that a magnetic flux path exits the blade on one of the suction side and the pressure side, and returns around the blade tip to one of the pressure side and the suction side, such that the flux path extends perpendicularly through the blade tip; characterised in that : each blade defines a chord line (C-C) at the blade tip, and wherein each rotor element is located within its respective blade tip such that the magnetic flux lines due to the rotor element are perpendicular to the chord line at the blade tip; the stator comprises a plurality of stator windings , wherein each of the stator windings is aligned within ±30 degrees of the chord line at the blade tip; and each rotor element is embedded within its respective blade such that the rotor element does not disrupt the aerodynamic shape of the blade. a turbomachine rotor having a hub and an axis of rotation (A-A) about which the turbomachine rotor is arranged to rotate; a plurality of blades , each blade having a root attached to the hub , a tip remote from the hub, a leading edge and a trailing edge , a pressure side face and a suction side face ; a plurality of rotor elements , each rotor element located at the tip of one of the plurality of blades; and a stator located circumferentially around the turbomachine rotor; wherein each rotor element comprises a permanent magnet having a first pole and a second pole , the first pole being located adjacent the suction side of the blade and the second pole being located adjacent the pressure side such that a magnetic flux path exits the blade on one of the suction side and the pressure side, and returns around the blade tip to one of the pressure side and the suction side, such that the flux path extends perpendicularly through the blade tip; characterised in that : each blade defines a chord line (C-C) at the blade tip, and wherein each rotor element is located within its respective blade tip such that the magnetic flux lines due to the rotor element are perpendicular to the chord line at the blade tip; the stator comprises a plurality of stator windings , wherein each of the stator windings is aligned within ±30 degrees of the chord line at the blade tip; and each rotor element is embedded within its respective blade such that the rotor element does not disrupt the aerodynamic shape of the blade. each blade defines a chord line (C-C) at the blade tip, and wherein each rotor element is located within its respective blade tip such that the magnetic flux lines due to the rotor element are perpendicular to the chord line at the blade tip; the stator comprises a plurality of stator windings , wherein each of the stator windings is aligned within ±30 degrees of the chord line at the blade tip; and each rotor element is embedded within its respective blade such that the rotor element does not disrupt the aerodynamic shape of the blade. <EOS>