How to make a Geiger Counter?
Ok so I just read the book "The Radioactive Boyscout" and I am now interested in making a geiger counter. How would I go about doing this? I mean I am pretty sure gas is used somehow to measure radiation and such but how is it done? It cant be that hard can it? and where and what could I test it on, I was thinking possibly an old radium clock maybe ? HELPZ