What is the difference between uvb and uva rays

There are plenty of measures you can take to keep yourself safe from sun exposure:. Thank you for reading and apologies for the delay in response. Due to the high volume of comments we receive, we are usually unable to respond to each person individually. If you have a specific medical question related to this blog post, we would recommend talking to your doctor or other care provider. Donate Today. For Physicians. Cancer Moonshots. Previous Article.

Tanning beds also emit UV radiation. Tanning beds cause the same skin damage as the sun. What is UV radiation? What is UVA radiation? What is UVB radiation? UVB radiation from the sun also can cause cataracts. How to protect yourself The best way to protect yourself from UV radiation is to stay out of the sun between 10 a.

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As a result, they can cause serious damage to all life forms. Fortunately, UVC radiation is completely filtered out by the ozone layer. As a result, these rays from the sun never reach the ground.

Man-made sources of UVC include welding torches, special bacteria-killing light bulbs, and mercury lamps. Although not considered a risk for skin cancer, UVC rays can cause severe damage to human eyes and skin, including burns, lesions, and ulcers on the skin. A number of environmental factors can affect when UV rays are the most powerful. Some of these factors include:. UV exposure is highest between 10 a. This makes them more powerful.

UV exposure is highest in the spring and summer months. During these seasons, the sun is at a higher angle, which increases UV ray intensity. However, the sun can still affect you during fall and winter. UV exposure is highest in areas on or near the equator, where UV rays have less distance to travel before reaching the ground. The ozone layer provides protection from UV rays. But greenhouse gases and pollutants have caused the ozone layer to thin, increasing UV intensity.

Clouds filter out some UV rays from reaching the ground. However, it depends on the type of cloud. Dark, water-filled clouds may block out more UV rays than high, thin clouds.