In college I was on a co-ed rifle team. The team captain was a women and her boyfriend was some sort of child prodigy physics geek who was employed at a Bell Research lab. One day around 1971, he had these little glass beads in a metal cup. when he attached battery leads the little beads would glow brightly. He talked about painting them on ceilings to light rooms in the future, using them in watch faces, tail lights etc. Don't know what they really were, but I recall, he got in some crap at his job because he was showing them off in public. An investigator called me about it and I disclaimed all knowledge of it. As I recall, he got in trouble a second time over some paint that changed colors when a charge was put to it. He painted his car with the stuff. It looked dull metallic orange until he flipped a switch and then it looked a strange green color. By that time, he held a few patents and had too much other stuff in the pipeline, that they wouldn't fire him.