A band of ultraviolet radiation with wavelengths from 280-320 nanometers. It damages DNA and can cause skin cancer, and has also been linked to damage to crops and marine organisms. The ozone layer protects the Earth against most UVb.

The middle UV region containing radiation between 280 and 320 nm and which affects plants and humans.

A type of radiation that can burn your skin, damages your eyes, and cause skin cancer. About 5% of the UVB radiation emitted by the sun reaches the earth.

Medium-wavelength UVB covers the range 280–315 nm. Approximately 90% of solar UVB radiation is absorbed by the ozone layer.

A type of ultraviolet (UV) radiation. UV rays are invisible rays that are part of the energy that comes from the sun. UVB radiation causes sunburn, and scientists have long thought that it can cause melanoma and other types of skin cancer. Skin specialists recommend that people use sunscreens that reflect, absorb, or scatter ultraviolet radiation.