Sounds rather grand, "my geiger counter". Actually, it's a datalogger with a geiger muller tube. It's portable so I took it on tour in the summer.
The watch belonged to my father-in-law. He bought it in 1951. In those days the luminous paint on the hands was made of a radioactive material. The final photo showa the geiger counter reading. The "safe" background reading that I took was less than 1 count per second. You can judge for yourself how dangerous a watch like this might be.
The watch belonged to my father-in-law. He bought it in 1951. In those days the luminous paint on the hands was made of a radioactive material. The final photo showa the geiger counter reading. The "safe" background reading that I took was less than 1 count per second. You can judge for yourself how dangerous a watch like this might be.
