When I was at grammer school during a physics lesson, the teacher produced a nice locked wooden box, when he unlocked it it was thickly lined with lead inside, and it had to be kept locked away for safety reasons as it contained a radium sample.
We checked it with a geiger counter, then we checked all the luminous wrist watches worn by the various class members, every single one was many times more radioactive than the highly secured sample of radium!.
The mention of Lancaster bombers reminded me!, the poor people who painted the dials in the aircraft with luminous paint mostly died horribly of cancer!.
We checked it with a geiger counter, then we checked all the luminous wrist watches worn by the various class members, every single one was many times more radioactive than the highly secured sample of radium!.
The mention of Lancaster bombers reminded me!, the poor people who painted the dials in the aircraft with luminous paint mostly died horribly of cancer!.