Here's why:
* Normal Light Emission: Most light sources, like incandescent bulbs, produce light by heating a filament until it glows. This process is inefficient, as a lot of energy is lost as heat.
* Chemiluminescence: In chemiluminescence, light is produced by a chemical reaction where energy released from the reaction excites electrons in molecules. These excited electrons then release the energy as light photons. This process doesn't involve significant heating.
Think of it like this:
* Incandescent bulb: Like burning a piece of paper - it produces heat and light.
* Chemiluminescence: Like a glow stick - it produces light but doesn't feel hot.
While there might be a very slight temperature increase in the chemical reaction, it's negligible compared to the amount of heat produced by other light sources.
