Pontian (or Pontianus), was pope from 230 to 235. During his pontificate the schism of Hippolytus came to an end. Pontian and other chuch leaders, among them Hippolytus, were exiled by the emperor Maximinus Thrax to Sardinia, and in consequence of this sentence resigned on September 25, 235. It is unknown for how long he stayed in the exile, but according to Liber Pontificalis he died due to the inhuman treatment he received in the Sardinian mines. His remains were brought to Rome by Pope Fabian and burried in the Catacomb of Callistus.
... opening on top of it, which is where you can manually start the gyroscope. Once the gyro is spinning, tipping the device will cause the gyroscope to start precessing, with ...