UV radiation is a type of energy emitted by the sun and artificial sources like tanning beds. It is part of the electromagnetic spectrum, which includes visible light and X-rays. UV radiation is divided into three types: UVA, UVB, and UVC, with UVA having the longest wavelength and UVC the shortest. While UVA can penetrate deep into the skin, UVB is primarily responsible for sunburns. Exposure to UV radiation can have both positive and negative effects. On the positive side, it helps the body produce vitamin D, which is essential for bone health. However, excessive exposure can lead to skin damage, premature aging, and an increased risk of skin cancer.