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(slow dramatic music) - Mike, what are you doing up, man? Mike, you all right? Mike, you cool, buddy? Mike, is everything okay? Whats the matter, Mike? Mike, you have a bad dream? - Blue light. (air whooshes) (dramatic music) Blue light. - That felt good. (air whooshes) - First things first. Whats blue light? Well, I have here on my whiteboard, demonstrated the different colors and the wavelengths attributed to each one of them. Now, the longer the wavelength, the less health effects youre actually gonna see on your eye. So red, green, above 550, youre not gonna see as many health effects. Violet light, may have heard of a UV light. Thats when it starts getting dangerous, and blue light is right on that same hinge. But I also, wanna show you how the human eye works, so you can understand how you even see these different colors. Right here, you have the human eye. (audience clapping) The drawing is not bad. Theres the optic nerve, cornea, pupil, lens, retina. Right here, when the