light, dark cyclists, the most important synchronize of our internal biological clock. professor charles seidler is the father of modern chrono biology. the science of our bodies, internal rhythms. he's investigated the effects of natural and artificial light. ah, since the dawn of time, most living species have been downright bombarded with the white light emitted by the sun. ah, white light is composed at a pallet of colors. they range from red to violet. but the blue tones predominate how it is could not make quite light, because no one knew how to make a blue l. it. so when the scientists discovered how to make a blue island that has created an entire revolution before then we used incandescent light bulbs with heated filaments. these were replaced with energy saving ellie dee's. and this is where the problem lies today. since the advent of blue ellie dees, each ball than our homes in midst the white light of a small sun all our screens use the same technology. they flood us with blue light without us noticing it. ah, now the electric light to which were exposed in terms of re selling our in