Glow sticks don't use energy in the way we typically think of it. They use chemical energy .

Så här fungerar det:

1. Chemicals: Glow sticks contain two main chemicals:a dye (which gives the stick its color) and a hydrogen peroxide solution . They are kept separate in a sealed glass vial inside the stick.

2. Breaking the vial: When you bend the glow stick, you break the glass vial, allowing the chemicals to mix.

3. Chemical reaction: The dye and hydrogen peroxide react, releasing energy in the form of light . Denna process kallas kemiluminescens .

4. Energy release: The chemical reaction continues until the chemicals are used up, and the glow stick eventually fades.

So, glow sticks don't need batteries or an external power source. They use the chemical energy stored within them to produce light.