#damper.device  a device that decreases the amplitude of electronic, mechanical, acoustical, or aerodynamic oscillations
  supertype:  #device  an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"
  subtype:  #damper_block__piano_damper__pianodamper  damper consisting of a small felted block that drops onto a piano string to stop its vibration
  subtype:  #dash-pot  a mechanical damper; the vibrating part is attached to a piston that moves in a chamber filled with liquid
  subtype:  #shock_absorber__shockabsorber__shock__cushion  a mechanical damper; absorbs energy of sudden impulses
     subtype:  #air_spring__airspring__air_cushion  a mechanical device using confined air to absorb the shock of motion

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