UV radiation

UV radiation or Ultraviolet radiation is a form of electromagnetic radiation that comes from the sun and is transmitted in waves or particles at different wavelengths and frequencies. This type of radiation is less powerful than X-rays but more powerful than visible light.

UV radiation is divided into three types based on wavelength: UV-A, UV-B, and UV-C. UV-A has the longest wavelength and is the least harmful, but it can contribute to aging of the skin, DNA damage, and possibly skin cancer. UV-B has a medium wavelength and is responsible for sunburn, DNA damage, and most skin cancers. UV-C has the shortest wavelength and is the most harmful, but it is completely absorbed by the Earth's atmosphere and does not reach the surface.

Health Effects

Exposure to UV radiation can have both beneficial and harmful effects on human health. On the positive side, it is responsible for the production of vitamin D in the skin, which is essential for bone health. On the negative side, overexposure can lead to skin cancer, cataracts, suppression of the immune system, and premature aging of the skin.

Protection

There are several ways to protect oneself from the harmful effects of UV radiation. These include wearing protective clothing, using sunscreen, seeking shade during peak sun hours, and wearing sunglasses that block UV rays.

See Also

• Sunburn
• Skin cancer
• Ozone layer
• Electromagnetic spectrum

References

UV radiation Resources
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