Decades: 1330s BC 1320s BC 1310s BC 1300s BC 1290s BC - 1280s BC - 1270s BC 1260s BC 1250s BC 1240s BC 1230s BC
Significant People
... force will cause one end of the axis to push against the upper rim of the groove, while the other end of the axis pushes against the lower rim of the groove. Whil ...