So, what's all this screen time actually doing to your body ... Screens emit a mix of red, green, and blue light — similar colors in sunlight. And over millennia, it was blue wavelengths in ...

The same light you see in street lamps ... To achieve the effect, the actors would stand in front of a white screen lit by a yellow hue from sodium vapor lights, hence its name, the sodium ...

But will filtering out blue light help with the digital eye strain that comes from extended time in front of a screen ... eye strain and the negative effects of blue light on your eyes are ...