Do you really know the difference between UVA, UVB, and UVC? The ultraviolet band index can be divided into different categories: UVA, UVB, and UVC. While you may not be able to see ultraviolet light due to its relatively short wavelength when compared to visible light, it still exists. Here is a quick overview:
● UVA- Wavelength of 320 to 400nm. Comprises 90 to 95 percent of the UV radiation on Earth. It is typically used for fluorescent inspections and to polymerize certain adhesives. It is considered the safest of all types of UV light.
● UVB – Wavelength of 280 to 320nm. Comprises 5 to 10 percent of UV radiation on Earth. It is what is responsible for sunburn and skin cancer. In industries, it’s used to cure certain inks and lacquers.
● UVC – Wavelength of 200 to 280nm. It is emitted in nature by the Earth’s atmosphere. In industries, it is used to kill microbes for sterilization purposes.
UVA is the longest wavelength, penetrating the deepest and causing the vast majority (upwards of 95%) of UV radiation to get through the earth's atmosphere. This is the form of radiation that causes skin aging, like spots and wrinkles, because it reaches so deeply into skin layers (through to the dermis layer). UVA rays can tan your skin right away and do appear to be linked to cancer. UVA rays, unlike the others, penetrate glass and clouds, causing harm on overcast days or via your windshield.
UVB is the second shortest wavelength and the main culprit of sunburn. It's mostly absorbed by the ozone layer but still gets through (about 5% gets through overall). It harms the top layer (epidermis) of your skin in as little as 15 minutes of sun exposure. UVB rays are stronger or weaker depending on the time of day and season. There is a strong link between UVB rays and skin cancer. UVB rays do age skin over time.
UVC is the shortest wavelength of the three forms of UV. The shorter the wavelength, the more harmful the UV radiation. However, lucky for us, UVC isn't able to penetrate Earth's atmosphere. So while UVC is the most dangerous because it's the shortest wavelength, it's not a risk to the typical person because the sun's natural UVC emissions don't penetrate skin. Remember, they actually do not even penetrate Earth's atmosphere naturally at all. UVC is absorbed completely by the ozone layer.
This is not to say that UVC isn't dangerous. Although naturally occurring UVC doesn't permeate the earth's atmosphere, inorganic sources of UVC radiation exist and are dangerous when not used properly. So, the people who need to be concerned about UVC radiation are those working with these man-made sources of UVC, like welding torches, mercury lamps
*information extension(Use of UVA, UVB and UVC lights)
UVB light emits ultraviolet light with a wavelength of 290-320 nm, While the atmosphere absorbs most of the solar UV-B light, it can still affect our bodies, Luckily for us, it won’t penetrate more than just the superficial skin layer. UVB light is mostly used for skin management, In UVB light treatment, these rays ('short waves' also known as 'narrowband') are used These rays are responsible for burning and tanning but can help reduce inflammation in the skin. UVB is used for many cases of psoriasis, particularly when it is proving resistant to other treatments or is so widespread. Ultraviolet light is not a long-term cure, but can improve your condition for a period of time. it is also useful in several other conditions, including generalized eczema and prevention of light allergy (polymorphic light eruption).
UVC light emits ultraviolet light with a wavelength of 200-280 nm because they are capable of destroying bacteria, viruses, other microorganisms, also be able to air purification, surface sterilization, water disinfection, and so on. So people widely apply it to surfaces for cleaning and disinfection, residential, commercial, and industrial applications.
UVA light is also referred to as ‘Blacklight’ or ‘Wood’s Lamp,’ and has a wavelength between 320 nm and 400 nm. It is the closest to the visible light spectrum. UVA is mainly used to utilize the characteristics of ultraviolet rays for photochemical reactions, product curing, sterilization and disinfection, medical examinations, etc. If you are looking for a UVA light, recommend the Olight Arkfeld Pro
Olight Canada TOP 1 Best Seller of 2023: Arkfeld Pro
#1 Versatile 3-in-1 EDC Flashlight, Arkfeld Pro combines 1300 lumens white light, 900mW UV light, and Class 3R green laser, But let's focus today on its UV capabilities.
#2 UV function 1: Use Arkfeld Pro UV to differentiate between real and fake jade jewelry.
UV function 2: The UV can also be used to find ticks and skin diseases on your furry pets.
UV function 3: Auto techs use them to look for coolant leaks. HVAC workers use them to look for leaks.
UV function 4: Check for bacteria in every corner of your home, toilet, hotel, etc.
UV function 5: You can check your money to see if it's real, read hidden messages, see UV / black light Tattoos, see UV stamps like the bars and clubs, and UV posters.
Where do you think UVA lights can be used? Please leave your comments.