Cold sources of light are the objects that do not experience any increase in temperature while emitting light radiations into the environment. Such sources of light typically include bioluminescent objects. The living things that are capable of producing light energy in the environment without getting hot are typically known as bioluminescent objects.
Examples of Cold Sources of Light
Some of the examples of cold sources of light present around us are given below:
1. Fire Flies
Fireflies are capable of emitting light energy into the environment due to a chemical process known as chemiluminescence. Chemiluminescence typically makes use of the conversion of chemical energy into light energy. The fireflies do not experience any increase in body temperature while producing light, which is why they fall under the category of cold sources of light.
2. Glow Worms
The glow worms form yet another example of the cold sources of light as these are the organisms that produce light without getting heated up. In the case of glow worms, the chemical reaction that is responsible for the emission of light energy in the surroundings takes place in the abdomen region of the worms. The skin of glow worms is quite thin in nature that helps the light radiations pass through their body with ease.
3. Jelly Fish
Jellyfishes are one of the prominent examples of cold sources of light present around us. They emit light in the environment without undergoing any change in temperature and tend to use it as a defence mechanism against predators. The bioluminescence produced by jellyfishes is a result of the chemical reaction of oxygen with a substance called luciferin.
4. Angler Fish
An angler fish radiates light energy into the surroundings through a rod-like extension that is present on its forehead. Only female angler fish are bioluminescent in nature and are capable of emitting light energy. The process of production of light by the angler fish typically mainly depends on the bacterial symbionts.
5. Black Dragon Fish
A black dragonfish is yet another example of the cold sources of light present around us.
6. Viper Fish
A viperfish makes use of the bioluminescence procedure to attract prey and lure small fishes. The long dorsal spine of the viperfish is capable of emitting light energy as it consists of a thin coating of photophores.
Some of the special types of mushrooms are capable of emitting light energy in the environment without getting heated up, which is why they can be classified under the category of cold sources of light present in nature.
Some of the bioluminescent plants are artificially created by scientists that can behave as cold sources of light.