Vibration

Vibration - mechanical oscillations of a solid phone Source of vibration are mechanical, pneumatic and electrical hand tools percussion and rotary, special equipment for receiving vibration levels. A variety of equipment that is installed without adequate depreciation and vibration control, and all vehicles and agricultural machines can be a source of vibration jobs (gender, seat, arms control).
Vibration safe levels used for the treatment of some diseases with the purpose of stimulation of neurotrophic, metabolic processes, enhance blood circulation (see the Vibrotherapy). With prolonged exposure to high levels of vibration may occur vibration disease.
For vibration measurements are Vibrographus recording fluctuations on paper tape, or simpliest vibration meters, registering variations on analogue scale.