sonic_dan's instructable
Tell us about yourself!
Complete Your ProfileAchievements
10K+
Views
Earned a bronze medal
- sonic_dan commented on TheHomebrewGuru's instructable Build a Pocket Ionizing Radiation Detector (PIRD)2 years ago
Get yourself a chunk of granite, it is mildly radioactive and shows a noticeable increase on a Geiger counter compared to background radiation. I'm a school science technician and this is what I issue for students to handle, as the sealed radioactive sources can only be used for teacher demonstrations.Unfortunately I'm about 4 years late with this comment... but felt the need to add this for reference!!