Protection Against Light
The human eye is sensitive to intense light because it damages the retina and can even blind the individual. There are many different types of eye protection against light suited for different applications.
The most common forms of eye protection against light are sunglasses. These primarily protect against UV light from the sun and help increase visibility in bright conditions. They often tend to be fashionable as well as practical. Laser protection eyewear is similar but will filter out a particular (or small range of) wavelength(s), customized to the laser being viewed. Laser protection eyewear is particularly important because of the extremely high intensity of laser light.
Welding glass protects against glare and flying sparks. It is a more extreme implementation of the same idea as sunglasses, suited to the more intense light generated during welding. Shade 14 welding glass (which is much stronger than sunglasses) can also be used to stare directly at the sun (e.g. to view a solar eclipse). Arc welding goggles must be much darker than blowtorch goggles.
Read more about this topic: Eye Protection
Famous quotes containing the words protection and/or light:
“We’re for statehood. We want statehood because statehood means the protection of our farms and our fences; and it means schools for our children; and it means progress for the future.”
—Willis Goldbeck (1900–1979)
“And I that have not your faith, how shall I know
That in the blinding light beyond the grave
We’ll find so good a thing as that we have lost?”
—William Butler Yeats (1865–1939)