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.
Light Waves. Light is the electromagnetic radiation between the wavelengths 380 nm to 740 nm. It is the range of the spectrum to which our eyes are sensitive. Therefore, humans see things using the visible light. The color perception of the human eye is based on the frequency/ wavelength of light.