However, excessive exposure can overwhelm these defenses, leading to cellular mutations and an increased risk of skin cancer. In forensics, UV light reveals latent fingerprints and bodily fluids that are invisible under normal lighting.
How to Protect Your Skin from Ultraviolet Rays
The body responds to this damage by increasing melanin production, which acts as a natural defense against further UV injury. However, the Earth's ozone layer acts as a protective shield, absorbing the most dangerous UV-C rays and a significant portion of UV-B.
UV-A, UV-B, and UV-C Scientists further divide the ultraviolet spectrum into three main categories based on wavelength and energy level. In medicine, it is used to treat skin conditions like psoriasis through controlled phototherapy.
How to Protect Skin from Ultraviolet Rays
UV-A: Long-wave ultraviolet, associated with skin aging. Visible light occupies a narrow band in the middle, with colors ranging from red, which has the longest wavelength, to violet, which has the shortest.
More About What does ultraviolet mean in science
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