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There is no such thing. The two are adjacent, in other words, the range for UVB starts where UVA ends.
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Why is the thinning of the ozone layer dangerous for us?
it means that our protection from UVA/UVB is lessened
What is the difference between UV-A and UV-B?
U.V can be separated according to its energy level and wavelength with UVa having the lowest energy and longest wavelength followed by UVb and ultimately UVc which has the shortest wavelength and highest energy level. You may be familiar with UVa and UVb as the part of the suns rays which cause tanning, aging, and skin cancer. The Sun also emits UVc the most powerful and dangerous type of U.V., fortunately for us most of this is stopped in the upper atmosphere by gasses like ozone.
How are ground level ozone and smog related?
The ozone ground level protects us from the UVA and UVB rays, whereas smog refers to the mixture of smoke and fog.
How does sunscreen protect against uv rays?
UNTIL RECENTLY, sunsreen protected you from UBV rays. Now, they are finally selling sunscreen that protects you from BOTH UVB AND UVA, which is also dangerous. In a related story of marketing manipulation, when you buy sunglass's BEWARE. The sticker on it will say 100% UV PROTECTION. What they don't say is that protection is from UVB ONLY! UVA rays are very damaging. According to my vision Dr. who is brilliant, wearing sunglass's with only UVB protection is WORSE than wearing no sunglasses! Here's why: with NO sunglasses, your pupil will close MORE and let less harmful rays into your eyes. When you wear UVB sunglasses, the pupil is shaded, and tricks your pupil to open wider. THEN, MORE dangerous UVA rays can enter you eyes and causeWORSE damage!!!!! Whenever you buy sunglasses, spend the extra money and buy ONLYthe ones that say "Protects against UVA & UVB rays."
How is it possible for stratospheric ozone to offer any protection from UV radiation?
Ultraviolet radiation is a portion of the electromagnetic spectrum with wavelengths shorter than visible light. The sun produces UV, which is commonly split into three bands: UVA, UVB, and UVC. UVA is not absorbed by ozone. UVB is mostly absorbed by ozone, although some reaches the Earth. UVC is completely absorbed by ozone and normal oxygen. see related link
Are levels of UV degradation higher with more UVA or UVB?
I am trying to fade the dye in fabrics with common UV lights, like that of tanning bed bulbs. There are options with amounts of both UVA and UVB. I am after a result with the highest degradation. Is UV degradation and Phototendering to dyes mainly from UVA or UVB? Would the level of degradation be higher faster with more UVA or UVB? Not really talking about what would be 'dagerous', besides UVB creates cancer so I would have thought that much more dangerous then UVA...
Does ultraviolet rays cause sunburns?
There are 2 types of ultra violet rays, UVA and UVB. UVA causes aging and wrinkles, and UVB causes the sun burns.
Can a red-eared slider live without a uvb light?
no,You need both uva and uvb light
Which light rays can cause skin damage similar to sunburn?
There are three types of rays- UVA, UVB and UVC. UVB and UVA act differently upon our skin and do not equally damage it. The UVB rays are mostly responsible for most cases of sunburn, as they are shorter than UVA rays. The UVA rays are longer so reach the inner state of the skin and causes skin damage.
What are 3 types of ultra violet radiation?
UVC UVB UVA
What does uva and uvb mean?
Ultra violet class A and B radiation
Is uv radiation harmful?
UV radiation is very harmful in many ways, first off they are invisible rays that come from the sun, UV radiation is made of ultraviolet A (UVA), ultraviolet B (UVB), and ultraviolet C (UVC). These rays burn skin and cause cancer. UVB and UVC penetrate the ozone layer. UVA and UVB cause skin cancer, for this reason, sunscreens are recommended that block UVA and UVB.
What is the high-frequency radiation called that gives us sunburn?
UVA and UVB
Does a sunscreen prevent you from getting darker if it says broad spectrum and uva uvb protection?
A sunscreen protects you from getting darker if it says 'broad spectrum' while the UVA/UVB sunscreens prevent ultraviolet light from reaching your skin.
Why is the thinning of the ozone layer dangerous for us?
it means that our protection from UVA/UVB is lessened
What kind of light is used for phototherapy for cutaneous T-cell lymphoma?
Both UVA and UVB light is used for phototherapy of cutaneous T-cell lymphoma; UVA is usually administered once a week, and UVB can be weekly as well, or sometimes daily.
Does car polish offer uva/uvb protection for the automobile?
You can purchase car polishes and waxes that claim to add UVA and UVB protection in addition to protection from other contaminants to your automobile. These products include Simoniz 17106 and Turtle Wax T-27R F21 Liquid Car Polish. It should be noted that there are those who believe that that these product claims are false and that there are no products that offer significant UVA/UVB protection. Some car polishes offer uva/uvb protection for the automobile but not all. The sun can be very damaging to the paint on your car so a good polish or wax is important.
