Light in Nature

Light influences the lives of plants and animals as well as that of humans. One thing is certain: Without light there is no life. In order to still be able to live and survive, nature has developed some fascinating tricks.


Plants could not live without sunlight, as it stored in the solar radiation energy for photosynthesis need. The rhythm of life of most animals is also strongly influenced by lighting conditions. Some are diurnal, nocturnal and others also different seasons they have to adapt accordingly.

In addition to the natural light of the sun, there are also a number of techniques of “self-lighting”, the animals have developed during evolution for different purposes. To use, among other fireflies, also called fireflies, light signals to communicate so that males and females find each other for mating. Wherein the act bioluminescence thereby luciferin reacts in the presence of the catalyst luciferase enzyme with adenosine triphosphate and oxygen. The liberated energy is almost sold only in the form of light and only to a small extent as heat, so that an efficiency of up to 95% yields. So far, no man-made light source has reached such a high degree of efficiency. Some marine animals that are native to the completely dark deep of the Atlantic, Pacific and Indian Oceans, luminous organs help in the fulfillment of vital functions such as intraspecific communication, in reproduction, for attracting prey, camouflage and defense. Similar light organs are also found in a number of crustaceans and insects.

Through natural selection, these techniques for generating light over very long periods have perfected. We humans use artificial light only since the early 18th century, a relatively very short period of time. And only a good 150 years later, we achieved a breakthrough on the LED technology field. Particularly concerning energy efficiency and efficiency can and we should therefore nature as their model.