Abstract
In order to observe and evaluate the UV-rays volume brought about by thethe destruction of ozon layer, this paper examines an evaluation of the sunlight UV-rays volume, using TLD and centering on the relationship between the exposure time for a fixed period time and TL intensity. The contents are as follows: (1) Itwas recognized that the sunlight UV-rays volume is proportional to the exposure time (2) The sunlight UV-rays volume measured for periods of 4 months (May-August, 1993) is reported.(3) Experimental procedure, result and examination are mentioned, and an evaluation of the sunlight UV-rays volume is conducted.
