ultraviolet light

What's ultraviolet light/ black light is use for

What’s it’s used for

Hospitals use UV lamps to sterilise surgical equipment and the air in operating theatres.

Food and drug companies also use UV lamps to sterilise their products.

Health

Ultraviolet (UV) light treatment is used primarily in cases of severe psoriasis

that have not responded to other medications or in cases affecting large portions of the body.

Suitable doses of

Ultraviolet

rays cause the body to produce vitamin D, and this is

used

by doctors to treat vitamin D deficiency and some skin disorders.

http://www.reuters.com/article/us-dermatology-uv-light-idUSKBN0DG1VC20140430

This is where is the article at

Wavelenth, Frequency, Velocity, Other key facts

Ultraviolet (UV) light is light with higher frequency (lower wavelength) than visible light. UV light has frequencies ranging from 8*10

14

to 3*10

16

Hz (800 THz to 30 PHz) and wavelengths from 10

-8

m to 3.8*10

-7

m (10 nm to 380 nm). Prolonged exposure to UV light causes sunburn and can cause skin cancer. The earth's ozone layer absorbs most of the incoming UV light from the sun
Ultraviolet Diving with Underwater Kinetics UV Lights