What is the typical irradiance range associated with UVB light?

The correct range for UVB light is 280-315 nm. This range is significant in both health and environmental contexts, as UVB radiation is primarily responsible for causing skin burns and plays a crucial role in the production of vitamin D in the skin.

Understanding the UV spectrum is essential for recognizing the biological effects of ultraviolet radiation. UVB rays have a higher energy level than UVA rays, making them more effective at inducing skin damage and increasing the risk of skin cancer, thus highlighting the importance of protection from these wavelengths during sun exposure.

The other ranges mentioned do not fall within the UVB classification. For example, 0-200 nm is associated with UVC radiation, which is generally absorbed by the ozone layer and does not reach the Earth's surface. The range of 315-400 nm corresponds to UVA radiation, which has different effects on the skin and is less intense than UVB. The definition of UV radiation is crucial for professionals in the field of industrial hygiene for establishing risk assessments and implementing protective measures.