Ultraviolet Radiation (UVR) Electromagnetic spectrum (2000 to 4000 nm) Divided into three ranges: – UV-A = Near UV (3200 to 4000 nm) Little or no physiologic.
Ultraviolet Therapy Ultraviolet Radiation (UVR) In electromagnetic spectrum UVR ranges from 2000 to 4000 Å Divided into three ranges: –UV-A- near UV-
