What is the energy characteristic of UVA wavelengths?

UVA wavelengths are characterized by low energy compared to other types of ultraviolet light, specifically UVB and UVC. This is due to their longer wavelength, which ranges from 320 to 400 nanometers. As the energy of electromagnetic radiation is inversely proportional to its wavelength, longer wavelengths correspond to lower energy levels. While UVA light can penetrate the skin more deeply and is often associated with skin aging and certain skin cancers, its energy is still considered low compared to other forms of UV radiation. This distinction is significant when discussing the effects of UV radiation on skin and overall health.