Ultraviolet Light Frequency

Frankly i wouldn t be very keen on staring into any uv light source especially the sun.

Ultraviolet light frequency. The higher the frequency of ultraviolet waves the more damaging they are to human skin and eyes. Uv is a common abbreviation of ultraviolet mainly used in technical contexts. Ultraviolet radiation lies between wavelengths of about 400 nanometres 1 nanometre nm is 10 9 metre on the visible light side and about 10 nm on the x ray side though some authorities extend the short wavelength limit to 4 nm. Many animals such as some insects some reptiles crocodiles salamanders and small birds can see things that reflect this light.

Because ultraviolet light has a frequency higher than that of visible light it carries more energy and has the ability to penetrate our skin. Near 400 300 nm middle 300 200 nm far 200 100 nm and extreme below. Ultraviolet is the part of the electromagnetic spectrum shown on the left side of the picture below as black because humans cannot see light of such short wavelength or high frequency. Ultraviolet germicidal irradiation uvgi is a disinfection method that uses short wavelength ultraviolet ultraviolet c or uv c light to kill or inactivate microorganisms by destroying nucleic acids and disrupting their dna leaving them unable to perform vital cellular functions.

Over the last few years germicidal uv light helped stop the spread of numerous pathogens like the influenza and other superbugs. Uvgi is used in a variety of applications such as food air and water purification. Ultraviolet uv is a form of electromagnetic radiation with wavelength from 10 nm with a corresponding frequency of approximately 30 phz to 400 nm 750 thz shorter than that of visible light but longer than x rays uv radiation is present in sunlight and constitutes about 10 of the total electromagnetic radiation output from the sun it is also produced by electric arcs and specialized. Light falls in the range of the em spectrum between visible light and x rays.

This electromagnetic radiation is not visible to the human eye because it has a shorter wavelength and higher frequency than the light our brain perceives as images. Do not stare directly into a short wave uv light source your eyes will become sunburned internally and very painfully. The frequency range of ultraviolet waves is between 7 5 x 10 14 and 3 x 10 16 hertz. Ultraviolet light waves are below the visible light spectrum.

It has frequencies of about 8 10 14 to 3 10 16. In physics ultraviolet radiation is traditionally divided into four regions. Uv ultraviolet light refers to the region of the electromagnetic spectrum between visible light and x rays with a wavelength falling between 400 and 10 nanometers. For this range the corresponding ultraviolet light wavelengths are 400 to 10 nanometers.