THE LIGHT DOCTOR 4: Human-Light Interaction

Chapter 4 shows that each of the rainbow colors in sunlight has specific effects on our health, which may be missing in the artificial spectra of electric lights.

Colorless tiny packets of energy, that Albert Einstein named “photons”¹, stream out of the sun traveling at the speed of light and reach the earth’s surface 8 minutes later. Every light photon that reaches the surface of the earth provides warmth, but fewer than half of the trillions of photons, that arrive each fraction of a second at the human eye², can…