Emperor Ingyō (允恭天皇) was the 19th imperial ruler of Japan. No firm dates can be assigned to this emperor or to his reign, but he is believed to have ruled the country during the mid-5th century CE.
... fall over, but start precessing around. (The precessing motion is perpendicular to the torque trying to make the gyro fall over.)
The axis of the gyroscope in th ...