Types of Ultraviolet (UV) radiation
48.4 هزار بار بازدید -
8 سال پیش
-
There are three types of
There are three types of UV radiation produced by the sun – UVA, UVB and UVC.
UVA - causes skin cancer and ageing
UVB - causes skin cancer and burning
UVC - doesn't reach the ground. It is filtered out by the Earth's atmosphere.
UV radiation cannot be seen by the eye or felt on the skin. When we feel the heat of the sun we are feeling the infrared rays, not the UV radiation.
UVA - causes skin cancer and ageing
UVB - causes skin cancer and burning
UVC - doesn't reach the ground. It is filtered out by the Earth's atmosphere.
UV radiation cannot be seen by the eye or felt on the skin. When we feel the heat of the sun we are feeling the infrared rays, not the UV radiation.
8 سال پیش
در تاریخ 1395/02/30 منتشر شده
است.
48,497
بـار بازدید شده