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1270s

Centuries: 12th century - 13th century - 14th century

Decades: 1220s 1230s 1240s 1250s 1260s - 1270s - 1280s 1290s 1300s 1310s 1320s

Years: 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279

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Dynabee

... tipping the device will cause the gyroscope to start precessing, with its axis slipping around in the groove in a circular fashion. The groove inside the device, is a ...