#crystal.component  a crystalline element used as a component in various electronic devices
  supertype:  #component__constituent  an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system: "spare components for cars"; "a component or constituent element of a system"
  subtype:  #piezoelectric_crystal  a crystal that can be used as a transducer
  part of:  #crystal_counter__crystalcounter  a counter tube in which an ionizing event increases conductivity
  part of:  #crystal_detector__crystaldetector  a detector consisting of a fine wire in contact with a galena crystal; acts as a rectifier
  part of:  #crystal_microphone__crystalmicrophone  a microphone in which sound waves vibrate a piezoelectric crystal that generates a varying voltage
  part of:  #crystal_pickup__crystalpickup  a cartridge in which an output voltage is produced by the vibration of a piezoelectric crystal

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