Sentences with phrase «when ultraviolet light from the sun»

Not exact matches

When ozone is lost from the stratosphere, it is not available to absorb incoming ultraviolet light from the Sun; so the stratosphere cools.

Planetary nebulas are a late stage in a sun - like star's life, when its outer layers have sloughed off and are lit up by ultraviolet light from the central star.

When we are exposed to ultraviolet B light from the sun or artificial sources, vitamin D3, or cholecalciferol is created photochemically in our skin.

Further, her skin will also synthesize some vitamin D - 3 when exposed to ultraviolet light from the sun.

When the intensity of ultraviolet light from the sun increases, temperature rises in this ozone rich air and weakens the downdraft, lowers the surface pressure and with it the strength of the trade winds that blow across the ocean to the low pressure zones that form over the warm waters that accumulate in the west.