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Granular convection is a phenomenon where granular material subjected to shaking or vibration will exhibit circulation patterns similar to types of fluid convection. [2] It is sometimes called the Brazil nut effect , [ 3 ] when the largest of irregularly shaped particles end up on the surface of a granular material containing a mixture of ...
A classic symptom is a characteristic fine tremor in the hands, which is traditionally described as a "pill-rolling" action of the hands, [3] but Parkinsonian tremor may also affect the arms, chin, lips, legs, and trunk, and can be markedly increased by stress or emotion. Onset is generally after age 60.
Essential tremor (ET), also called benign tremor, familial tremor, and idiopathic tremor, is a medical condition characterized by involuntary rhythmic contractions and relaxations (oscillations or twitching movements) of certain muscle groups in one or more body parts of unknown cause. [6]
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Here is a compilation put together in February that exemplifies Trump's "pull" and forceful style of handshake:
Baseball Hall of Famer Stan Musial used the fist bump during the 1950–60s as an alternative to shaking hands. Musial was convinced that he was catching too many colds by picking up germs while shaking thousands of hands each year, so he adopted the fist bump as a friendly alternative.
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For example, if there is a party of people who shake hands, the number of people who shake an odd number of other people's hands is even. [1] The handshaking lemma is a consequence of the degree sum formula , also sometimes called the handshaking lemma, [ 2 ] according to which the sum of the degrees (the numbers of times each vertex is touched ...