UVstrålingen

UVstrålningen, also known as ultraviolet radiation, is a form of electromagnetic radiation with wavelengths shorter than visible light but longer than X-rays. It is a component of sunlight and is also produced by artificial sources such as tanning beds and germicidal lamps. UVstrålningen is typically divided into three categories based on wavelength: UVA, UVB, and UVC.

UVA radiation has the longest wavelength and penetrates the Earth's atmosphere most effectively. It is responsible for tanning and contributes to skin aging. UVB radiation is partially absorbed by the ozone layer and is the primary cause of sunburn. It also plays a role in vitamin D production in the skin. UVC radiation has the shortest wavelength and is almost entirely absorbed by the ozone layer. It is highly germicidal and is used in sterilization processes.

Exposure to UVstrålningen can have both beneficial and harmful effects. While moderate exposure is necessary for vitamin D synthesis, excessive exposure, particularly to UVB, can lead to sunburn, premature skin aging, and an increased risk of skin cancer. Protective measures such as sunscreen, protective clothing, and seeking shade are recommended to minimize the harmful effects of UVstrålningen.