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Yes, the degree to which you are burned is in relation to not only intensity but length of exposure. The parts of sunlight that do damage to skin is call UVA and UVB rays, these rays are only slightly affected by cloud cover. These rays penetrate the skin and radiate for hours, causing radiation burns (sun burn.) Additionally, Titanium has the property of absorbing these rays, which is why it is in just about every sunblock available. Use the sunblock on a sunny day and not on the cloudy day and you will receive a higher dose of the sun's radiation, thus allowing one to get a worse burn on a cloudy day. The surface of the moon is covered in Titanium which is why it is so reflective and why the moon's light is safer than the sun's light, it reflects the visible light while absorbing harmfull UV radiation.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoIt's not that you get UV rays from the clouds themselves; it's that clouds are not as effective at blocking the short-length ultraviolet light as people think.
Look at it this way: if light can make it through the layer of clouds, than so can UV light. Which means that you can get a bad sunburn on even a cloudy day, if you don't take adequate precautions.
The general rule of thumb is that bright clouds are the equivalent of a sunscreen with SPF 4, and dark clouds are the equivalent of SPF 8 to 15. So if you're going to be out and about, make sure you still cover your skin or wear sunscreen.
One further note: spotty cloud cover can actually increase your UV risk, as the edges of those clouds can refocus the sun's rays. If any of the clouds in the sky appear shiny, especially around their edges, assume you're being exposed to UV radiation as much as if you were in direct sunlight.
Wiki User
∙ 13y agoNo. I believe UV is scattered in all directions just as the other wavelengths, which means you can get burned even in the "shade". But either wave, UV is no more or less intense after passing through clouds.
Wiki User
∙ 15y agoThere are always tiny bits of UV radiation, but not enough to worry about.
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What is the percentage of UV rays that hit the earth?
about 7% of the UV rays hit the earth.
What are the functions of the clouds?
1. rain can 'move' from place to place 2. clouds release rain 3. clouds reflect harmful uv rays and heat from the sun(in desert where there is no cloud, it is very hot)
What are water droplets that are too heavy to float make?
It forms rain.
Does fog turn into rain?
yea it does
What are the examples of condensation?
fog into rain
Why do UV rays penetrate rain clouds?
Nñ
What type of rain are filtered by the ozone layer?
The rays filtered by the ozone are UV rays. The UV rays are extremely dangerous radiations. These radiations can cause skin cancer to living organisms.Ultraviolet(UV) rays
What effects the Earth's surface?
acid rain, severe sunlight and UV rays and pollution
Which rays of the sun can in high quantities damage the skin?
UV RAYS!!! The sun is the major natural source of UV Rays. UV Rays are invisable. They are still a form of light rays. UV stands for Ultra Violiet Rays. These (UV) rays cause sunburn and damage the eyes. Overexposure of UV Rays can cause serious skin cancer. UV Rays, however, can have useful effects, too. They can destroy harmful organisms. UV RAYS!!! The sun is the major natural source of UV Rays. UV Rays are invisable. They are still a form of light rays. UV stands for Ultra Violiet Rays. These (UV) rays cause sunburn and damage the eyes. Overexposure of UV Rays can cause serious skin cancer. UV Rays, however, can have useful effects, too. They can destroy harmful organisms.Utraviolet rays
What is UV energy?
UV energy is in UV rays. These are high energy rays.
Are UV light and UV rays the same thing?
Yes, UV light and UV rays are the same thing, light emit "rays."
When the sun reflects UV rays?
The sun does not reflect the UV rays that are fatal. It creates the UV rays not reflect them.
What are the three types of UV rays and their effects?
The UV rays are of three types. they are UV-A, UV-B, UV-C.
What affects uv rays?
Ozone affects UV rays. These are harmful rays of the sun.
What does uv rays mean?
UV rays are harmful rays of the sun. They are absorbed by the ozone layer.
How uv rays affect to us?
UV rays affect us. It is because they are high energy rays.
Why do cientists fear uv rays?
Scientists fear UV rays. It is because they are fatal rays of the sun.
