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 all cry out that the world is corrupt,—and I fear too justly,—but we never reflect, what we have to thank for it, and that it is our open countenance of vice, which gives the lye to our private censures of it, which is its chief protection and encouragement.”
—Laurence Sterne (1713–1768)
“But the path of the righteous is like the light of dawn, which shines brighter and brighter until full day. The way of the wicked is like deep darkness; they do not know what they stumble over.”
—Bible: Hebrew, Proverbs 4:18-19.