Final answer:
Microvibrations are vibrations performed with very short and fast oscillations that are almost invisible to the eye. These oscillations are characterized by their high frequency and small amplitude, making them difficult to perceive without special equipment.
Step-by-step explanation:
Vibrations performed with very short, fast oscillations that are almost invisible to the eye are known as microvibrations. These microvibrations are characterized by their high frequency and small amplitude, making them difficult to perceive without special equipment. For example, microvibrations can be observed in the movement of atoms and molecules, as well as in certain medical procedures that utilize oscillating tools.