C. M. Keck
Introduction – sunlight and its biological effects on the body
The sun and its light are the main driving force of life on our planet. For the human organism, solar radiation acts as a highly complex biological clock that does more than just supply energy. What looks like simple white light to our eyes shows its true nature when it passes through a three-sided glass prism: the beam breaks into a continuous band of bright spectral colors, like a natural rainbow. From a physical viewpoint, this phenomenon represents a finely tuned spectrum of electromagnetic wavelengths.
