What is the full form of UV?
The full form of UV is Ultraviolet. UV light has a wavelength of 10 to 400 nm, which is shorter than the visible light but longer than the X-rays and is a form of electromagnetic radiation. They are found in sunlight and produce 10 per cent of the light from the total sunlight.
Ultraviolet Waves Properties
Ultraviolet is one of the electromagnetic radiation produced by the Sun and distributed either as waves or as particles of specific frequency and wavelength. The uv wave characteristics are as follows.
- Uv light wave ranges are -1 x 10-8m to -4 x 10-7m.
- Uv light wave frequency is from -7.5 x 1014 Hz to -3 x 1016 Hz.
- Uv light wavelengths are narrower than visible light.
- Thick clouds can block Ultraviolet radiation.
- In clinics and laboratories, a UV light is used as a disinfectant.
- Nearest to the visible light is the near-ultraviolet.
- The Far-ultraviolet exists between UV near and extreme areas.
One very fascinating story is the detection of uv radiation. A gentleman named Johann Ritter had tried to confirm the presence of waves beyond the visible spectrum during the 1800s. It was known and understood that photographic film changed to black in blue light more easily than red. Ritter exposed that film to beyond violet, and the film changed colour as expected. This confirmed UV rays exist.
Use of UV rays
- UV lamps emit light which is sufficient to destroy the germs.
- UV lights are used for sterilizing surgical equipment in hospitals.
- Ultraviolet light is also used for water treatment and the pharmaceutical sector.