Ultraviolet measurements at the Dead Sea and at Beersheba.

Comparative ultraviolet (UV) spectral measurements of direct and scattered sunlight, between 300 and 400 nm, reaching the Dead Sea and Beersheba were made. It was found that the sunlight reaching Beersheba is at least twice as high in UV content as that reaching the Dead Sea. The UV content of the sunlight reaching the Dead Sea in the erythemal band (290 to 330 nm) is particularly low. The implications for heliotherapy are discussed.