The impulse reaction turbine, a combination of the aforementioned designs, was a turbine whose blades rotated because of both, the impulse force of direct thrust on the blades by the steam, as well as the guiding thrust on the blades because of the unique blade design of the reaction turbine. Therefore, the efficiency of this turbine surpassed that of both the above, and it stood out from all its predecessors.  There was a pressure drop in both, the fixed blades (nozzles) of the impulse design, and in the moving blades (that were nozzle shaped), therefore effectively rotating the blades, and producing more electrical energy per rotation! Most steam turbines today use this design for effective power conversion and electricity generation.