What is Ultraviolet Light
The spectrum of light is broken up into several pieces such as UV (ultraviolet), IR (infrared) and of course visible light. UV and IR are not visible to the naked eye but each affects our skin and in the case of IR can be felt as heat on the human skin. UV light is not seen or felt but it can have profound and lasting effects on the skin in beneficial and sometimes harmful ways.
Picture from http://www.electrobreezeaircleaners.ca/uvhelp.htm
In this blog we will concern ourselves with the UV portion of the spectrum, specifically UVB. UVB Narrowband is the a very specific spectrum at 311 nm (nano meters) or billionths of a meter.
Image from http://www.homephototherapy.com/nbc-narrowband.htm
Looking at the image above, one should notice that
1) The red line is our skin’s sensitivity to UV light
2) The blue line is what we call UVB Broad Band
3) The green line is UVB Narrow Band
