The wavelength of ultraviolet (UV) radiation spans from 100 to 400 nanometers (nm). This range is further divided into three categories: UVA, UVB, and UVC, each with its own specific wavelength range and effects.
UV Spectrum Breakdown
Here's a breakdown of the different types of UV radiation and their corresponding wavelengths:
- UVA (315-400 nm): Often associated with skin aging and tanning. It penetrates deeper into the skin than UVB.
- UVB (280-315 nm): Primarily responsible for sunburn and plays a significant role in skin cancer development.
- UVC (100-280 nm): The most energetic form of UV radiation. Fortunately, it is mostly absorbed by the Earth's atmosphere and does not reach the surface in significant amounts.
Importance of UV Wavelength
Understanding the different UV wavelengths is important because each type interacts differently with our skin and the environment. For instance, the effectiveness of sunscreen is measured by its ability to block specific UV wavelengths, particularly UVB. Similarly, UV sterilization techniques utilize specific UVC wavelengths to destroy microorganisms.
Summary
In short, UV radiation encompasses wavelengths from 100 to 400 nm, divided into UVA, UVB, and UVC, each having distinct properties and impacts.
