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250s

Centuries: 2nd century - 3rd century - 4th century

Decades: 200s - 210s - 220s - 230s - 240s - 250s - 260s - 270s - 280s - 290s - 300s

Years: 250 251 252 253 254 255 256 257 258 259


Events:



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Dynabee

... force is essential for the device's operation, the groove must not be lubricated. The acceleration of the gyroscope is best when the precession of the gyroscope is supported ...

 
 
 
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