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2. Tritium radioluminescence - Wikipedia

   en.wikipedia.org/wiki/Tritium_radioluminescence

   Tritium radioluminescence is the use of gaseous tritium, a radioactive isotope of hydrogen, to create visible light. Tritium emits electrons through beta decay and, when they interact with a phosphor material, light is emitted through the process of phosphorescence. The overall process of using a radioactive material to excite a phosphor and ...

3. Glow stick - Wikipedia

   en.wikipedia.org/wiki/Glow_stick

   A glow stick, also known as a light stick, chem light, light wand, light rod, and rave light, is a self-contained, short-term light-source. It consists of a translucent plastic tube containing isolated substances that, when combined, make light through chemiluminescence. The light cannot be turned off and can be used only once.

4. Strontium aluminate - Wikipedia

   en.wikipedia.org/wiki/Strontium_aluminate

   Strontium aluminate is an aluminate compound with the chemical formula SrAl2O4 (sometimes written as SrO·Al2O3). It is a pale yellow, monoclinic crystalline powder that is odourless and non-flammable. When activated with a suitable dopant (e.g. europium, written as Eu:SrAl2O4), it acts as a photoluminescent phosphor with long persistence of ...

5. 5 Best Items To Buy at Five Below Before Halloween - AOL

   www.aol.com/5-best-items-buy-five-210009503.html

   Price: $5-$15. For costumes, Five Below has a variety of character masks, capes, wands and other accessories for under $5 that you can mix and match, according to Schmitt. “My daughters love to ...

6. Phosphorescence - Wikipedia

   en.wikipedia.org/wiki/Phosphorescence

   Phosphorescence is a type of photoluminescence related to fluorescence. When exposed to light (radiation) of a shorter wavelength, a phosphorescent substance will glow, absorbing the light and reemitting it at a longer wavelength. Unlike fluorescence, a phosphorescent material does not immediately reemit the radiation it absorbs.

7. Aviation light signals - Wikipedia

   en.wikipedia.org/wiki/Aviation_light_signals

   Aviation light signals. A United States Air Force airman with a signal light gun that can be used to control aircraft with radio failure. In the case of a radio failure or aircraft not equipped with a radio, or in the case of a deaf pilot, air traffic control may use a signal lamp (called a "signal light gun" or "light gun" by the FAA [1][2 ...