Daily Archives: 2010-01-03

Salt with a kick

“[S]odium-free salt (potassium chloride) is sufficiently radioactive (from the isotope potassium-40) that after several months, a saltshaker-ful will form an image on film.” —Theodore Gray, Gray Matter: DIY X-Ray Photos, Popular Science Unrelated to the content, a brief rant…. Apparently … Continue reading

Posted in Sci-Tech | Leave a comment