![I got a keychain that uses the radioactive decay of Tritium (the radioactive isotope of hydrogen) to emit light. : r/mildlyinteresting I got a keychain that uses the radioactive decay of Tritium (the radioactive isotope of hydrogen) to emit light. : r/mildlyinteresting](https://i.redd.it/w8aszm9jxzi41.jpg)
I got a keychain that uses the radioactive decay of Tritium (the radioactive isotope of hydrogen) to emit light. : r/mildlyinteresting
![TEC Accessories Isotope PRE (Picatinny Rail Edition) Glow in The Dark Keychain, Titanium Housing for 2 Glass Tritium Vial (Not Included) - Tritium Keychain Fob, Edc Key Accessories, Cool Keychain at Amazon TEC Accessories Isotope PRE (Picatinny Rail Edition) Glow in The Dark Keychain, Titanium Housing for 2 Glass Tritium Vial (Not Included) - Tritium Keychain Fob, Edc Key Accessories, Cool Keychain at Amazon](https://m.media-amazon.com/images/I/81Aws7+eAlL._AC_UY350_.jpg)
TEC Accessories Isotope PRE (Picatinny Rail Edition) Glow in The Dark Keychain, Titanium Housing for 2 Glass Tritium Vial (Not Included) - Tritium Keychain Fob, Edc Key Accessories, Cool Keychain at Amazon
![Nite Tritium Glowring Keychain Key Fob Night Automatic Light Self Luminous Fluorescent Tub Tritium | idusem.idu.edu.tr Nite Tritium Glowring Keychain Key Fob Night Automatic Light Self Luminous Fluorescent Tub Tritium | idusem.idu.edu.tr](https://i0.wp.com/tritiumkeychains.com/wp-content/uploads/IMG_20200724_185542.jpg?resize=300%2C300&ssl=1)
Nite Tritium Glowring Keychain Key Fob Night Automatic Light Self Luminous Fluorescent Tub Tritium | idusem.idu.edu.tr
![Tritium Light Stainless Steel Tritium Key Chain Including Tritium Vials 3mm*22.5mm Tritium Tube Automatic Light 25 Years-green - Hasps - AliExpress Tritium Light Stainless Steel Tritium Key Chain Including Tritium Vials 3mm*22.5mm Tritium Tube Automatic Light 25 Years-green - Hasps - AliExpress](https://ae01.alicdn.com/kf/HTB1esfFeSzqK1RjSZPxq6A4tVXaG/tritium-light-stainless-steel-tritium-key-chain-including-tritium-vials-3mm-22-5mm-tritium-tube-Automatic.jpg)