Centuries: 3rd century - 4th century - 5th century
Decades: 290s 300s 310s 320s 330s - 340s - 350s 360s 370s 380s 390s
Years: 338 339 340 341 342 - 343 - 344 345 346 347 348
Births
Deaths
... when the precession of the gyroscope is supported and amplified by wrist motion. It takes a while until one finds the "rolling" point, but the gyro will also b ...