3 ms·
To add: C-14, Al-26, Cl-36, Ca-41, Ca-48, V-50 and more in trace quantities can be present. Try pointing a Geiger counter at a brick or ever better plaster wal
by consp 8y ago
To add: C-14, Al-26, Cl-36, Ca-41, Ca-48, V-50 and more in trace quantities can be present.
Try pointing a Geiger counter at a brick or ever better plaster wall and be surprised about the amount of radiation you get during the day.