History of Ultraviolet

Difference (from prior major revision) (minor diff, author diff)

Changed: 3c3

Ultraviolet light is the cause of [skin cancer]?s such as melanoma. The radiation ionises DNA molecules in skin cells, causing mutations which can result in cancerous growths. As a defence to this the body tan?s when exposed to moderate (depending on [skin type]?) levels of radiation by releasing the brown pigment melanin?. This helps to block UV and prevent damage to the vulnerable skin tissues deeper down.

Ultraviolet light is the cause of [skin cancer]?s such as melanoma?. The radiation ionises DNA molecules in skin cells, causing mutations which can result in cancerous growths. As a defence to this the body tan?s when exposed to moderate (depending on [skin type]?) levels of radiation by releasing the brown pigment melanin?. This helps to block UV and prevent damage to the vulnerable skin tissues deeper down.

Added: 6a7,8

Ultraviolet lamps are also used in analyzing minerals. Minerals may look the same under visible light, but flouresce to different degress under ultraviolet light.

	Revision 12 . . (edit) December 13, 2001 4:24 pm by Sodium
	Revision 11 . . December 7, 2001 5:58 am by Wmorrow
	Revision 10 . . December 6, 2001 9:37 pm by Sodium [tidy]
	Revision 9 . . December 6, 2001 9:35 pm by Sodium *[tidy]**
	Revision 8 . . (edit) November 14, 2001 2:00 am by (logged).237.32.xxx