what is ultraviolet ?????
Answers
Explanation:
Ultraviolet::::
♥ It is a radiation which we generally call UV rays
♥ it is a type of radiation that is all around us ,eventhough our eyes cannot detect it
♥ it has a higher frequency than the visible light
Answer:
Ultraviolet (UV) light falls in the range of the EM spectrum between visible light and X-rays. It has frequencies of about 8 × 1014 to 3 × 1016 cycles per second, or hertz (Hz), and wavelengths of about 380 nanometers (1.5 × 10−5 inches) to about 10 nm (4 × 10−7 inches).
Explanation:
UVA, or near UV (315–400 nm)
UVB, or middle UV (280–315 nm)
UVC, or far UV (180–280 nm)
The guide goes on to state, "Radiations with wavelengths from 10 nm to 180 nm are sometimes referred to as vacuum or extreme UV." These wavelengths are blocked by air, and they only propagate in a vacuum.
Even though the sun light has uv radiation reaching us, most of the harmful UV radiation are blocked in the ozone layer.
High energy UV rays of required wavelength can be generated by electic arc lamps and even LED. and each wavelength has it own applications, for example, blacklight for glowing, identification, decoration, stage and party glow lights.
UVB for polymerizing coatings, adhesives, paints, inks etc in industrial fields.
UVC for germicidal uses of destroying germs, bacteria, algae in air and water.