There are numerous uses for UV, which vary with wavelength. Here's a link which may help you:
http://en.wikipedia.org/wiki/Ultraviolet
A few uses of UV are:
Curing
Sterilization
Purification
Black Light
Curing industrial adhesives and paints. Erasing computer EPROM chips. Fraud protection by detecting fake money and invisible watermarks. Invisible property marking. Secret signatures on bank books. Tanning beds. Water purification. Air purification, making girls' Bras glow bright at discos. Mineral spectroscopy. Detecting biochemical markers. Curing jaundice and the best one of all, even better than lighting up girls' underwear: Attracting flies to an electric grid so that a few thousand volts fries them to a crisp instantly.
Sterilization, suntanning,
Vitamin D production requires UV radiation.
Certain Cancer controlling processes also require UV radiation. The epoxy that they use to fill your teeth now-a-days requires UV radiation to set it.
Ultra-violet light bulbs are used in sunbeds. Being under a UV light vulb for a long time can cause loss of sight, they're quite dangerous.
ultraviolet is used in tanning salons to "brown" the skin
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That makes you have a sun burn
they use it to cure diseases
UV rays
Too much exposure to the ultraviolet rays from the Sun can prove to be fatal.
Anything opaque that can block light will block ultraviolet rays. Wearing a shirt will keep your back from getting sunburned by ultraviolet rays.
Ultraviolet rays from the Sun cause sunburns.
X-rays and gamma rays from the sun are black by the atmosphere. The ozone layer partially blocks out ultraviolet rays, but some do get through, creating a risk of sunburn, skin cancer, and eye damage.
Ultraviolet rays
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How many ultraviolet rays are there?
Ultraviolet (UV) waves can be used to kill bacteria, but are also harmful to humans. X-Rays are used to analyze bones etc
Bees can see ultraviolet rays.
Protection from Ultraviolet rays/sunlight
Johann Wilhelm Ritter discovered ultraviolet rays
Ultraviolet rays, or radiation, is a type of electromagnetic waves.
Yes, X-rays and gamma rays have higher frequencies than ultraviolet rays.
no, because ultraviolet rays are just above seeing and with ultraviolet lights, you see a more violet color.
Both Gamma Rays and X Rays have a much high frequency that Ultraviolet Rays.
Ultraviolet rays cannot be seen or felt. Ever had a sun-burn? I say UV rays can be felt.