Chandler wobble

Chan·​dler wobble | \ˈchan(d)lər-\
variants: or less commonly Chandler's wobble \ -​lərz-​ \

Definition of Chandler wobble 

: an elliptical oscillation of the earth's axis of rotation with a period of 14 months whose cause has not been determined

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History and Etymology for Chandler wobble

after Seth Carlo Chandler †1913 American astronomer

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obstinately defiant of authority

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