system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
How can UV light be used?


assistant
UV light is electromagnetic radiation.  It has a wavelength that is shorter than regular visible light.  UV light can be used in water purification to kill viruses and bacteria in city water.  Continuous flow UV lights can kill virus and bacteria up to 99.999%.  This is very helpful because it keeps people from ingesting virus and bacteria in their water source.  UV light has other applications such as tanning beds.  UV light can also be used in disinfecting services too.