The following words and terms as used in sections 192.400 to 192.490 mean:

(1) “Radiation”, any or all of the following forms of ionizing radiation: gamma and X rays, alpha and beta particles, high speed electrons, neutrons, protons and other nuclear or atomic particles or rays, and other radiant energies including, by way of extension but not of limitation, radium, strontium 90, cesium 137 and cobalt 60, but radiation as herein defined does not include sound or radio waves or visible, infrared or ultraviolet light;

(2) “Radiation machine”, any device that produces radiation;

(3) “Unnecessary radiation”, the use of radiation as herein defined in such a manner as to be hazardous to the health of the people or the industrial or agricultural potentials of the state.