What re some harmful effects for visible light waves?

Answer 1

Visible light waves, or the stream of photons with frequencies within the band

allocated to human visual applications, as well as their spurious products and

inadequately suppressed harmonics (the photons' that is, not the humans'), can

indeed often prove harmful, typically and primarily with regard to their potential

emotional consequences. It's impossible to over-estimate the chance possibility

of an individual's inadvertent exposure to scenes that anger, annoy, befuddle,

confuse, corrupt, erupt, disrupt, disappoint, disorient, depress, oppress, terrify,

irritate, titillate, or stimulate a thousand other outrageous and unfortunate slings

and arrows that flesh is heir to. And, considering the element of surprise, it is

unlikely that one could, simply by opposing, end them. As the danger is primarily

emotional, so is the solution: The conscious decision taken by every man-jack

among us, in his heart, that his synapses and receptors were not created for

moments when there is no stress, but that they are for such moments as these,

when body and soul rise up in mutiny against their rigour, that he consider the

alternative, and resolve that he just won't let things like that bother him.

Answer 2

with light we can see so obviously taht is a positive.