Our ancestors about 1.7 million years ago did not understand how to question or even explore this topic in depth. Already in prehistory, the discovery of fire, and thus light, was an enormous quantum leap, if only primarily to use as a source of light which was essential to life.
We’ve learned through human history to technically benefit from light. Scientific disciplines such as optics and photonics, as well as technical applications, such as laser welding, developed over time. Modern laser technology works in invisible nano ranges. Light has become indispensable for processing materials for various applications with the highest precision. Without current laser technology, our current life could not be imagined – in medical devices, shipbuilding, electrical engineering, machine tools and aerospace.