![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
![5*80mm Automatic Light Tritium Gas tube Waterproof Emergency Lights Tritium Gas Glow Keychain Fluorescent Tube … | Emergency lighting, Gas lights, Fluorescent tube 5*80mm Automatic Light Tritium Gas tube Waterproof Emergency Lights Tritium Gas Glow Keychain Fluorescent Tube … | Emergency lighting, Gas lights, Fluorescent tube](https://i.pinimg.com/736x/76/81/d9/7681d9ea7b524fd267842cb327027519.jpg)
5*80mm Automatic Light Tritium Gas tube Waterproof Emergency Lights Tritium Gas Glow Keychain Fluorescent Tube … | Emergency lighting, Gas lights, Fluorescent tube
![TEC Accessories ISOTOPE S323 - Stainless Steel Tritium Vial Housing 3mm x 23mm - Camping Accessories - EDC - Survival Gear TEC Accessories ISOTOPE S323 - Stainless Steel Tritium Vial Housing 3mm x 23mm - Camping Accessories - EDC - Survival Gear](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/91Ev1wAp6EL._AC_UY1000_.jpg)
TEC Accessories ISOTOPE S323 - Stainless Steel Tritium Vial Housing 3mm x 23mm - Camping Accessories - EDC - Survival Gear
![RADIOACTIVE Keychain? - Tritium Gaseous Light Source GTLS - Glow in the Dark - Nite GlowRing - YouTube RADIOACTIVE Keychain? - Tritium Gaseous Light Source GTLS - Glow in the Dark - Nite GlowRing - YouTube](https://i.ytimg.com/vi/iSkmyTgZn1c/maxresdefault.jpg)
RADIOACTIVE Keychain? - Tritium Gaseous Light Source GTLS - Glow in the Dark - Nite GlowRing - YouTube
![Automatic Light 25 Years Tritium Gas Light Key Ring Titanium Alloy Fluorescent Tubes Keychain Tube Lifesaving Emergency Lights - Glow Party Supplies - AliExpress Automatic Light 25 Years Tritium Gas Light Key Ring Titanium Alloy Fluorescent Tubes Keychain Tube Lifesaving Emergency Lights - Glow Party Supplies - AliExpress](https://ae01.alicdn.com/kf/HTB1LAz5RVXXXXb1aXXXq6xXFXXXl/Automatic-Light-25-Years-Tritium-Gas-Light-Key-Ring-Titanium-Alloy-Fluorescent-tubes-Keychain-Tube-Lifesaving.jpg_Q90.jpg_.webp)