nephrosis neÂ·phroÂ·sis (nÉ-frÅ'sÄ­s) n. pl. neÂ·phroÂ·ses (-sÄz) Disease of the kidneys marked by degeneration of renal tubular epithelium. See nephrotic syndrome.
Ultraviolet light is a form of radiation which is not visible to the human eye. It's in an invisible part of the electromagnetic spectrum. Radiated energy, or radiation, is given off by many objects: a light bulb, a crackling fire, and stars are some examples of objects which emit radiation. The type of radiation being emitted depends on the temperature of the object.
Ultraviolet (UV) radiation is the part of sunlight which causes sunburn, skin damage and skin cancer. Ultraviolet radiation can be broken down into three bands: UVA, UVB, and UVC. The amount of UV rays reaching the Earthâs surface varies throughout the day. The danger period is between 10am and 3pm. These are the hours when skin damage occurs the fastest. On a cloud-free day, we can feel maximum ultraviolet rays. However, ultraviolet levels are not related to the air temperature. There can be high levels of ultraviolet rays on cool days and UV rays still reach the Earthâs surface when there is cloud cover.