This national public education campaign is designed to increase awareness among parents of children ages 8 to 12 about the causes and prevention of noise-induced hearing loss.
Our eyes are what allow us to see. Our eyes are designed to detect a small portion of the electromagnetic spectrum. This part of the spectrum is called the visible light region. The visible light region ranges in wavelengths from about 380 or 400 nm to 700 or 780 nm depending on which source is used. In fact it also depends on the sensitivity of a specific persons eyes.
How to see and READ the AURA: Part 2. Our Eyes. With our eyes we can sense (perceive) a very narrow range of vibration frequencies of ElectroMagnetic (EM) vibration corresponding to wavelengths from 0.3 to 0.7 micrometers - from purple to red. A mix of the vibration frequencies in the above range we perceive with our eyes as color.