Show Messages Message flight uj rays were de de- described described described scribed as an almost interception- interception proof means of communication dur dur- during during during ing warfare by Dr Phillips Thomas research engineer of an Indianapolis electric company The method would be especially effective in m communication communication communication cation between the ground and planes in the air he pointed out as as- asserting asserting asserting a message could be inter inter- intercepted intercepted intercepted only by cutting into the beam directed at the plane Other electrical elec elec- electrical developments demonstrated were a which he ex ex- explained explained explained would destroy all germs in a given confined area such as a hospital operating room and a ablack ablack ablack black light which produces vari vari- various various various ous colors |