Definitions for "Alternate Quantum Vibrational States"
The generic title to any physical state out of phase with our own.  “Echans” or magical folk call this state Etherealness—being of this world but not, where you can observe the real world, but exist separately.  The real world may or may not detect you and may of may not be able to interact.  “Techans” or Techa-Folk progressed little in this field.  A Few bastions discovered a way for machines to enter this state so that they could pass through walls and slip past guard towers without detection.  This is advantageous over simply being invisible because Etherealness displaces the subject out of the material reality altogether.