Ultravioletinio

Ultravioletinio, or ultraviolet radiation, is a form of electromagnetic radiation with wavelengths shorter than visible light but longer than X-rays. It is part of the electromagnetic spectrum, which includes radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. The ultraviolet spectrum is typically divided into three bands: UVA, UVB, and UVC, based on their wavelengths.

UVA rays have the longest wavelength and can penetrate deep into the skin, contributing to skin aging and the formation of wrinkles. UVB rays have shorter wavelengths and are the primary cause of sunburn and skin damage, playing a significant role in the development of skin cancer. UVC rays have the shortest wavelengths and are the most energetic, but they are almost entirely absorbed by the Earth's ozone layer, posing little direct threat to life on the surface.

The sun is the main natural source of ultraviolet radiation. However, artificial sources like tanning beds and some industrial processes also emit UV light. While excessive exposure to ultraviolet radiation can be harmful, it also has beneficial effects. For instance, UV radiation is essential for the production of vitamin D in the skin, which is crucial for bone health and immune function. It is also used in various medical and industrial applications, such as sterilization and water purification, due to its germicidal properties. Protection from harmful UV exposure is important and can be achieved through measures like sunscreen, protective clothing, and limiting sun exposure during peak hours.