Many years ago radium-226 and radon-222 sources were used as gamma-ray sources for industrial radiography: for instance a radon-222 source was used to examine the mechanisms inside an unexploded V-1 flying bomb, while some of the early Bathyspheres could be examined using radium-226 to check for cracks.
Light-emitting diode | Gamma | Swift Gamma-Ray Burst Mission | Fermi Gamma-ray Space Telescope | Beta Gamma Sigma | Alpha Gamma Rho | The Effect of Gamma Rays on Man-in-the-Moon Marigolds | Sigma Gamma Rho | Pi Gamma Mu | Phi Gamma Delta | light-emitting diode | Gamma-glutamyl transpeptidase | gamma | The Gamma People | Sigma Tau Gamma | Kappa Kappa Gamma | Gamma wave | Gamma-ray burst | gamma-ray burst | Gamma Phi Beta | Gamma function | Gamma Flight | Erich Gamma | Delta Gamma | Commonly used terms of relationship and comparison in dentistry | The symbol "Gamma | The Effect of Gamma Rays on Man-in-the-Moon Marigolds (film) | Tau Gamma Phi | Sigma Gamma Chi | Omega Gamma Delta |