Glow sticks will show up better if you put them in the dark instead of leaving them in the light. Glow sticks are activated by breaking the tube inside and shaking them.
Glow sticks are exothermic.Exothermic is when heat/energy is released. And that is exactly what glow sticks do. but the energy being released is in the form of light.
Nightflyer.com
Glow sticks aren't just for raves, nor are they just for kids on Halloween. Glow sticks can be a great safety asset when outside in any dark or dangerous condition. Many athletes use glow sticks to light their paths when running and to make them more visible to cars. Glow sticks can also be useful for roadside emergencies, for power outages, or in substitute of a flashlight. Glow sticks are inexpensive and can be purchased at most party stores and sports stores.
they absorb light from before and then when it is dark they glow the absorbed light
Due to the little amount of light that glow sticks provide it isn't guaranteed that you can use them to find people. Although having many glow sticks may work.
Who doesn't love glow-in-the-dark Halloween costumes, stickers, or glow sticks? Many bugs glow in the dark, too. Unlike glow toys, these bugs make their own light. These bugs are bioluminescent (by-oh-lew-muh-NESS-ent). Chemicals in their bodies combine to make them shine. Although bioluminescent animals light up, they don't give off heat like a light bulb does. Fireflies are the most common glow-in-the-dark insects. They light up to communicate with each other as they look for a mate.
plastic light
Glow sticks react to chemical light, which involves a chemical reaction between two substances inside the stick. This reaction produces light without needing an external energy source like electricity.
Glow sticks contain chemicals that undergo a chemical reaction to produce light. This reaction has a limited lifespan, and once all the chemical components have reacted, the glow stick will no longer produce light. This is why glow sticks do not last forever.
The better question is does a glow stick glow longer in hot or cold environments. Here since its a chemical reaction heat acts as a catalyst and speeds up the process. So in warm weather you'll get brighter glow that lasts significantly shorter then a glow stick in a cold environment. Funny enough if you cool down a glow stick enough (about -60 F) then the process will stop altogether.
No, glow in the dark requires the absorption of light to emit a glow in darkness. Black lights emit ultraviolet (UV) light, which typically does not charge glow in the dark items like visible light does.
To recharge glow sticks, expose them to a bright light source for a few hours. This will help the chemicals inside the glow sticks to become activated again, allowing them to glow brightly once more.