Lymansäteilyn

Lymansäteilyn refers to ultraviolet (UV) radiation emitted by the sun. It is divided into three categories based on wavelength: UVA, UVB, and UVC. UVC has the shortest wavelength and is almost entirely absorbed by the Earth's atmosphere. UVB has a medium wavelength and penetrates the Earth's atmosphere, reaching the surface. UVA has the longest wavelength and also reaches the surface.

Exposure to Lyman radiation, particularly UVB, is essential for the human body's synthesis of vitamin D, which plays a crucial role in calcium absorption and bone health. However, excessive exposure can lead to detrimental health effects. Short-term effects include sunburn, characterized by redness, pain, and blistering of the skin. Long-term exposure is a primary risk factor for skin cancer, including melanoma, basal cell carcinoma, and squamous cell carcinoma. UV radiation can also cause premature aging of the skin, such as wrinkles and leathery texture, and damage the eyes, potentially leading to cataracts and macular degeneration.

The intensity of Lyman radiation varies depending on factors such as time of day, season, latitude, and altitude. It is strongest during midday hours and in tropical regions. Cloud cover can reduce UV intensity, but it does not block it entirely, as UV rays can penetrate clouds. Reflection from surfaces like snow, sand, and water can also increase exposure. Protective measures against excessive Lyman radiation include wearing sunscreen, protective clothing, and sunglasses, and seeking shade during peak UV hours.