Tornadoes come in many shapes and sizes, but they are typically in the form of a visible condensation funnel originating from the base of a huge storm cloud, whose narrow end touches the earth and is often encircled by a basal cloud of debris and dust.
Soda jerk. A soda jerk (or soda jerker) is a personâtypically a youthâwho operates the soda fountain in a drugstore, often for the purpose of preparing and serving flavored soda water or an ice cream soda. This was made by putting flavored syrup into a specially designed tall glass, adding carbonated water and, finally, one or two scoops of ice cream.
A jerk nystagmus is usually due to a motor defect that may be induced by brainstem or cerebellar lesions, drug intoxication (upbeat nystagmus in which the fast phase is in the upward direction or downbeat nystagmus in which the fast phase is downward); associated with a lesion of the central nervous system or the vestibular nerve or nuclei (central nystagmus and vestibular nystagmus); or to disease or injury to the labyrinth (labyrinth nystagmus); or to multiple sclerosis.