Radioactive Mushrooms vs. Affordable Gamma Spectrometer | This beats ALL Geiger counters!
16:37
Do your own Gamma Spectroscopy with the Radiacode 103
14:26
Mystery RADIOACTIVE Source | Can we identify it?
11:08
How radioactive are bananas and other radioactive foods?
14:59
YELLOW LASERS?!? Finally - after 25+ years of collecting!
21:14
Geiger Counter: the Classic Radiation Detector
12:05
Three Geiger Counters Challenged | Weak and STRONG samples
20:20
Why is this Beach in Southern California Radioactive?
9:03