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Did your coffee cup shake and your corn flakes fly across the room?

Frost may in some instances be responsible for cup shake or at least a contributing factor, although trees growing in regions free from frost often have ring shake.

Shrinkage of the heartwood may be concentric as well as radial in its action, thus producing cup shake instead of, or in connection with, heart shake.

A local defect somewhat similar in effect to cup shake is known as rind gall.

Cup shake is often associated with other forms of shake, and not infrequently shows traces of decay.