Class 9 Scientific devices and equipment used in conncection with nuclear, space, medical, oceanographic, biological and other natural and life sciences, industrial research, and academic instruction-namely atomic and sub-atomic charged particle, neutron and electromagnetic radiation detectors; electronic instrumentation and equipment used for atomic and sub-atomic particle measurement, control, amplification and calibration; and permit calibration of the above equipment and devices; devices designed to simulate or control or measure the thermal, gaseous-atmosphere and air density environmental conditions of the foregoing devices and equipment; and equipment and devices designed to generate charged particle beams and plasmas from neutral gaseous atmospheres, and equipment to amplify, modify and control such beams, for application in accelerators, solarwind simulation, and ion propulsion and scatteringChambers