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11. rod and plate being of 6o to 7o degrees.It is obvioua that in this model the forces work in almost the same way as in the arrow-point model.I shell there- fore only mention why the dead point with its brakng offect is avoided here. In the arrow-point modol, the braking eetion on the paramagnetie materi- al is alreacy partiy effoctive before the rod is opposite the magnet. In the swastika model, the braking aetion on the paramagne tie materiel does not com- mence until the rod has passed the position just opposite to the magnet but at the sane time the diamagnetic material will be between the msgnet and the paramagnetie materlaI so that in no place dces the megnetism hit the paramag- netic matorial directly, whereas it strikes the diamagnetie plate which is strongly rapelled, so that a great acceloretion is obtained in the direction of movement. And to this muat be added that the repu...